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Title 14--Aeronautics
and Space
CHAPTER I--FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED)
PART 121--OPERATING REQUIREMENTS: DOMESTIC, FLAG, AND SUPPLEMENTAL OPERATIONS
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 | 121.1 | Applicability. |
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| 121.2 | Compliance schedule for operators that transition to part 121; certain new entrant operators. |
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| 121.4 | Applicability of rules to unauthorized operators. |
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| 121.11 | Rules applicable to operations in a foreign country. |
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| 121.15 | Carriage of narcotic drugs, marihuana, and depressant or stimulant drugs or substances. |
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| 121.91 | Applicability. |
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| 121.93 | Route requirements: General. |
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| 121.95 | Route width. |
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| 121.97 | Airports: Required data. |
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| 121.99 | Communication facilities. |
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| 121.101 | Weather reporting facilities. |
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| 121.103 | En route navigational facilities. |
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| 121.105 | Servicing and maintenance facilities. |
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| 121.107 | Dispatch centers. |
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| 121.111 | Applicability. |
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| 121.113 | Area and route requirements: General. |
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| 121.115 | Route width. |
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| 121.117 | Airports: Required data. |
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| 121.119 | Weather reporting facilities. |
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| 121.121 | En route navigational facilities. |
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| 121.123 | Servicing maintenance facilities. |
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| 121.125 | Flight following system. |
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| 121.127 | Flight following system; requirements. |
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| 121.131 | Applicability. |
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| 121.133 | Preparation. |
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| 121.135 | Contents. |
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| 121.137 | Distribution and availability. |
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| 121.139 | Requirements for manual aboard aircraft: Supplemental operations. |
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| 121.141 | Airplane flight manual. |
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| 121.151 | Applicability. |
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| 121.153 | Aircraft requirements: General. |
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| 121.157 | Aircraft certification and equipment requirements. |
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| 121.159 | Single-engine airplanes prohibited. |
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| 121.161 | Airplane limitations: Type of route. |
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| 121.163 | Aircraft proving tests. |
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| 121.171 | Applicability. |
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| 121.173 | General. |
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| 121.175 | Airplanes: Reciprocating engine-powered: Weight limitations. |
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| 121.177 | Airplanes: Reciprocating engine-powered: Takeoff limitations. |
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| 121.179 | Airplanes: Reciprocating engine-powered: En route limitations: All engines operating. |
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| 121.181 | Airplanes: Reciprocating engine-powered: En route limitations: One engine inoperative. |
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| 121.183 | Part 25 airplanes with four or more engines: Reciprocating engine powered: En route limitations: Two engines inoperative. |
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| 121.185 | Airplanes: Reciprocating engine-powered: Landing limitations: Destination airport. |
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| 121.187 | Airplanes: Reciprocating engine-powered: Landing limitations: Alternate airport. |
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| 121.189 | Airplanes: Turbine engine powered: Takeoff limitations. |
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| 121.191 | Airplanes: Turbine engine powered: En route limitations: One engine inoperative. |
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| 121.193 | Airplanes: Turbine engine powered: En route limitations: Two engines inoperative. |
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| 121.195 | Airplanes: Turbine engine powered: Landing limitations: Destination airports. |
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| 121.197 | Airplanes: Turbine engine powered: Landing limitations: Alternate airports. |
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| 121.198 | Cargo service airplanes: Increased zero fuel and landing weights. |
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| 121.199 | Nontransport category airplanes: Takeoff limitations. |
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| 121.201 | Nontransport category airplanes: En route limitations: One engine inoperative. |
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| 121.203 | Nontransport category airplanes: Landing limitations: Destination airport. |
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| 121.205 | Nontransport category airplanes: Landing limitations: Alternate airport. |
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| 121.207 | Provisionally certificated airplanes: Operating limitations. |
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| 121.211 | Applicability. |
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| 121.215 | Cabin interiors. |
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| 121.217 | Internal doors. |
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| 121.219 | Ventilation. |
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| 121.221 | Fire precautions. |
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| 121.223 | Proof of compliance with 121.221. |
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| 121.225 | Propeller deicing fluid. |
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| 121.227 | Pressure cross-feed arrangements. |
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| 121.229 | Location of fuel tanks. |
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| 121.231 | Fuel system lines and fittings. |
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| 121.233 | Fuel lines and fittings in designated fire zones. |
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| 121.235 | Fuel valves. |
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| 121.237 | Oil lines and fittings in designated fire zones. |
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| 121.239 | Oil valves. |
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| 121.241 | Oil system drains. |
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| 121.243 | Engine breather lines. |
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| 121.245 | Fire walls. |
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| 121.247 | Fire-wall construction. |
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| 121.249 | Cowling. |
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| 121.251 | Engine accessory section diaphragm. |
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| 121.253 | Powerplant fire protection. |
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| 121.255 | Flammable fluids. |
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| 121.257 | Shutoff means. |
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| 121.259 | Lines and fittings. |
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| 121.261 | Vent and drain lines. |
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| 121.263 | Fire-extinguishing systems. |
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| 121.265 | Fire-extinguishing agents. |
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| 121.267 | Extinguishing agent container pressure relief. |
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| 121.269 | Extinguishing agent container compartment temperature. |
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| 121.271 | Fire-extinguishing system materials. |
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| 121.273 | Fire-detector systems. |
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| 121.275 | Fire detectors. |
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| 121.277 | Protection of other airplane components against fire. |
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| 121.279 | Control of engine rotation. |
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| 121.281 | Fuel system independence. |
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| 121.283 | Induction system ice prevention. |
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| 121.285 | Carriage of cargo in passenger compartments. |
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| 121.287 | Carriage of cargo in cargo compartments. |
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| 121.289 | Landing gear: Aural warning device. |
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| 121.291 | Demonstration of emergency evacuation procedures. |
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| 121.293 | Special airworthiness requirements for nontransport category airplanes type certificated after December 31, 1964. |
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| 121.301 | Applicability. |
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| 121.303 | Airplane instruments and equipment. |
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| 121.303 | Airplane instruments and equipment. |
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| 121.305 | Flight and navigational equipment. |
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| 121.306 | Portable electronic devices. |
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| 121.307 | Engine instruments. |
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| 121.308 | Lavatory fire protection. |
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| 121.309 | Emergency equipment. |
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| 121.310 | Additional emergency equipment. |
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| 121.311 | Seats, safety belts, and shoulder harnesses. |
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| 121.312 | Materials for compartment interiors. |
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| 121.313 | Miscellaneous equipment. |
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| 121.314 | Cargo and baggage compartments. |
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| 121.315 | Cockpit check procedure. |
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| 121.316 | Fuel tanks. |
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| 121.317 | Passenger information requirements, smoking prohibitions, and additional seat belt requirements. |
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| 121.318 | Public address system. |
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| 121.319 | Crewmember interphone system. |
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| 121.323 | Instruments and equipment for operations at night. |
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| 121.323 | Instruments and equipment for operations at night. |
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| 121.325 | Instruments and equipment for operations under IFR or over-the-top. |
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| 121.325 | Instruments and equipment for operations under IFR or over-the-top. |
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| 121.327 | Supplemental oxygen: Reciprocating engine powered airplanes. |
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| 121.329 | Supplemental oxygen for sustenance: Turbine engine powered airplanes. |
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| 121.331 | Supplemental oxygen requirements for pressurized cabin airplanes: Reciprocating engine powered airplanes. |
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| 121.333 | Supplemental oxygen for emergency descent and for first aid; turbine engine powered airplanes with pressurized cabins. |
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| 121.335 | Equipment standards. |
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| 121.337 | Protective breathing equipment. |
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| 121.339 | Emergency equipment for extended over-water operations. |
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| 121.340 | Emergency flotation means. |
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| 121.341 | Equipment for operations in icing conditions. |
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| 121.342 | Pitot heat indication systems. |
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| 121.343 | Flight recorders. |
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| 121.344 | Digital flight data recorders for transport category airplanes. |
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| 121.344a | Digital flight data recorders for 10-19 seat airplanes. |
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| 121.345 | Radio equipment. |
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| 121.347 | Radio equipment for operations under VFR over routes navigated by pilotage. |
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| 121.349 | Radio equipment for operations under VFR over routes not navigated by pilotage or for operations under IFR or over-the-top. |
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| 121.351 | Radio equipment for extended overwater operations and for certain other operations. |
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| 121.353 | Emergency equipment for operations over uninhabited terrain areas: Flag, supplemental, and certain domestic operations. |
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| 121.354 | Terrain awareness and warning system. |
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| 121.355 | Equipment for operations on which specialized means of navigation are used. |
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| 121.356 | Collision Avoidance System. |
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| 121.356 | Collision avoidance system. |
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| 121.357 | Airborne weather radar equipment requirements. |
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| 121.358 | Low-altitude windshear system equipment requirements. |
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| 121.359 | Cockpit voice recorders. |
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| 121.360 | Ground proximity warning-glide slope deviation alerting system. |
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| 121.361 | Applicability. |
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| 121.363 | Responsibility for airworthiness. |
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| 121.365 | Maintenance, preventive maintenance, and alteration organization. |
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| 121.367 | Maintenance, preventive maintenance, and alterations programs. |
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| 121.368 | Aging airplane inspections and records reviews. |
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| 121.369 | Manual requirements. |
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| 121.370 | Special maintenance program requirements. |
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| 121.370a | Supplemental inspections. |
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| 121.371 | Required inspection personnel. |
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| 121.373 | Continuing analysis and surveillance. |
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| 121.375 | Maintenance and preventive maintenance training program. |
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| 121.377 | Maintenance and preventive maintenance personnel duty time limitations. |
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| 121.378 | Certificate requirements. |
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| 121.378 | Certificate requirements. |
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| 121.379 | Authority to perform and approve maintenance, preventive maintenance, and alterations. |
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| 121.380 | Maintenance recording requirements. |
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| 121.380a | Transfer of maintenance &chyph;records. |
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| 121.381 | Applicability. |
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| 121.383 | Airman: Limitations on use of services. |
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| 121.385 | Composition of flight crew. |
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| 121.387 | Flight engineer. |
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| 121.389 | Flight navigator and specialized navigation equipment. |
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| 121.391 | Flight attendants. |
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| 121.393 | Crewmember requirements at stops where passengers remain on board. |
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| 121.395 | Aircraft dispatcher: Domestic and flag operations. |
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| 121.397 | Emergency and emergency evacuation duties. |
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| 121.400 | Applicability and terms used. |
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| 121.401 | Training program: General. |
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| 121.402 | Training program: Special rules. |
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| 121.403 | Training program: Curriculum. |
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| 121.404 | Compliance dates: Crew and dispatcher resource management training. |
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| 121.405 | Training program and revision: Initial and final approval. |
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| 121.406 | Credit for previous CRM/DRM training. |
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| 121.407 | Training program: Approval of airplane simulators and other training devices. |
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| 121.409 | Training courses using airplane simulators and other training devices. |
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| 121.411 | Qualifications: Check airmen (airplane) and check airmen (simulator). |
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| 121.412 | Qualifications: Flight instructors (airplane) and flight instructors (simulator). |
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| 121.413 | Initial and transition training and checking requirements: Check airmen (airplane), check airmen (simulator). |
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| 121.414 | Initial and transition training and checking requirements: flight instructors (airplane), flight instructors (simulator). |
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| 121.415 | Crewmember and dispatcher training requirements. |
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| 121.415 | Crewmember and dispatcher training requirements. |
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| 121.417 | Crewmember emergency training. |
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| 121.418 | Differences training: Crewmembers and dispatchers. |
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| 121.419 | Pilots and flight engineers: Initial, transition, and upgrade ground training. |
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| 121.420 | Flight navigators: Initial and transition ground training. |
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| 121.421 | Flight attendants: Initial and transition ground training. |
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| 121.422 | Aircraft dispatchers: Initial and transition ground training. |
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| 121.424 | Pilots: Initial, transition, and upgrade flight training. |
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| 121.425 | Flight engineers: Initial and transition flight training. |
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| 121.426 | Flight navigators: Initial and transition flight training. |
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| 121.427 | Recurrent training. |
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| 121.427 | Recurrent training. |
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| 121.429 | Prohibited drugs. |
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| 121.431 | Applicability. |
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| 121.432 | General. |
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| 121.433 | Training required. |
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| 121.433a | Training requirements: Handling and carriage of dangerous articles and magnetized materials. |
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| 121.434 | Operating experience, operating cycles, and consolidation of knowledge and skills. |
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| 121.437 | Pilot qualification: Certificates required. |
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| 121.438 | Pilot operating limitations and pairing requirements. |
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| 121.439 | Pilot qualification: Recent experience. |
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| 121.440 | Line checks. |
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| 121.441 | Proficiency checks. |
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| 121.443 | Pilot in command qualification: Route and airports. |
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| 121.445 | Pilot in command airport qualification: Special areas and airports. |
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| 121.453 | Flight engineer qualifications. |
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| 121.455 | Use of prohibited drugs. |
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| 121.457 | Testing for prohibited drugs. |
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| 121.458 | Misuse of alcohol. |
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| 121.459 | Testing for alcohol. |
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| 121.461 | Applicability. |
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| 121.463 | Aircraft dispatcher qualifications. |
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| 121.465 | Aircraft dispatcher duty time limitations: Domestic and flag operations. |
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| 121.467 | Flight attendant duty period limitations and rest requirements: Domestic, flag, and supplemental operations. |
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| 121.470 | Applicability. |
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| 121.471 | Flight time limitations and rest requirements: All flight crewmembers. |
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| 121.480 | Applicability. |
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| 121.481 | Flight time limitations: One or two pilot crews. |
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| 121.483 | Flight time limitations: Two pilots and one additional flight crewmember. |
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| 121.485 | Flight time limitations: Three or more pilots and an additional flight crewmember. |
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| 121.487 | Flight time limitations: Pilots not regularly assigned. |
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| 121.489 | Flight time limitations: Other commercial flying. |
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| 121.491 | Flight time limitations: Deadhead transportation. |
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| 121.493 | Flight time limitations: Flight engineers and flight navigators. |
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| 121.500 | Applicability. |
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| 121.503 | Flight time limitations: Pilots: airplanes. |
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| 121.505 | Flight time limitations: Two pilot crews: airplanes. |
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| 121.507 | Flight time limitations: Three pilot crews: airplanes. |
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| 121.509 | Flight time limitations: Four pilot crews: airplanes. |
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| 121.511 | Flight time limitations: Flight engineers: airplanes. |
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| 121.513 | Flight time limitations: Overseas and international operations: airplanes. |
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| 121.515 | Flight time limitations: All airmen: airplanes. |
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| 121.517 | Flight time limitations: Other commercial flying: airplanes. |
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| 121.519 | Flight time limitations: Deadhead transportation: airplanes. |
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| 121.521 | Flight time limitations: Crew of two pilots and one additional airman as required. |
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| 121.523 | Flight time limitations: Crew of three or more pilots and additional airmen as required. |
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| 121.525 | Flight time limitations: Pilots serving in more than one kind of flight crew. |
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| 121.531 | Applicability. |
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| 121.533 | Responsibility for operational control: Domestic operations. |
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| 121.535 | Responsibility for operational control: Flag operations. |
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| 121.537 | Responsibility for operational control: Supplemental operations. |
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| 121.538 | Aircraft security. |
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| 121.539 | Operations notices. |
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| 121.541 | Operations schedules: Domestic and flag operations. |
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| 121.542 | Flight crewmember duties. |
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| 121.543 | Flight crewmembers at controls. |
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| 121.545 | Manipulation of controls. |
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| 121.547 | Admission to flight deck. |
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| 121.548 | Aviation safety inspector's credentials: Admission to pilot's compartment. |
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| 121.548a | DOD Commercial Air Carrier Evaluator's Credential. |
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| 121.549 | Flying equipment. |
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| 121.550 | Secret Service Agents: Admission to flight deck. |
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| 121.551 | Restriction or suspension of operation: Domestic and flag operations. |
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| 121.553 | Restriction or suspension of operation: Supplemental operations. |
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| 121.555 | Compliance with approved routes and limitations: Domestic and flag operations. |
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| 121.557 | Emergencies: Domestic and flag operations. |
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| 121.559 | Emergencies: Supplemental operations. |
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| 121.561 | Reporting potentially hazardous meteorological conditions and irregularities of ground and navigation facilities. |
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| 121.563 | Reporting mechanical irregularities. |
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| 121.565 | Engine inoperative: Landing; reporting. |
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| 121.567 | Instrument approach procedures and IFR landing minimums. |
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| 121.569 | Equipment interchange: Domestic and flag operations. |
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| 121.570 | Airplane evacuation capability. |
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| 121.571 | Briefing passengers before takeoff. |
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| 121.573 | Briefing passengers: Extended overwater operations. |
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| 121.574 | Oxygen for medical use by passengers. |
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| 121.575 | Alcoholic beverages. |
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| 121.576 | Retention of items of mass in passenger and crew compartments. |
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| 121.577 | Stowage of food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and landing. |
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| 121.578 | Cabin ozone concentration. |
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| 121.579 | Minimum altitudes for use of autopilot. |
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| 121.580 | Prohibition on interference with crewmembers. |
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| 121.581 | Observer's seat: En route inspections. |
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| 121.583 | Carriage of persons without compliance with the passenger-carrying requirements of this part. |
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| 121.585 | Exit seating. |
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| 121.586 | Authority to refuse transportation. |
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| 121.587 | Closing and locking of flightcrew compartment door. |
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| 121.589 | Carry-on baggage. |
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| 121.590 | Use of certificated land airports. |
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| 121.591 | Applicability. |
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| 121.593 | Dispatching authority: Domestic operations. |
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| 121.595 | Dispatching authority: Flag operations. |
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| 121.597 | Flight release authority: Supplemental operations. |
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| 121.599 | Familiarity with weather conditions. |
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| 121.601 | Aircraft dispatcher information to pilot in command: Domestic and flag operations. |
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| 121.603 | Facilities and services: Supplemental operations. |