Part 125: Certification and operations: Airplanes having a seating capacity of 20 or more passengers or a maximum payload capacity of 6,000 pounds or more; and rules governing persons on board such aircraft

Federal Aviation Regulations

Subpart A - General

• Sec. 125.1 - Applicability.
• Sec. 125.3 - Deviation authority.
• Sec. 125.5 - Operating certificate and operations specifications required.
• Sec. 125.7 - Display of certificate.
• Sec. 125.9 - Definitions.
• Sec. 125.11 - Certificate eligibility and prohibited operations.

Subpart B - Certification Rules and Miscellaneous Requirements
 

• Sec. 125.21 - Application for operating certificate.
• Sec. 125.23 - Rules applicable to operations subject to this part.
• Sec. 125.25 - Management personnel required.
• Sec. 125.27 - Issue of certificate.
• Sec. 125.29 - Duration of certificate.
• Sec. 125.31 - Contents of certificate and operations specifications.
• Sec. 125.33 - Operations specifications not a part of certificate.
• Sec. 125.35 - Amendment of operations specifications.
• Sec. 125.37 - Duty period limitations.
• Sec. 125.39 - Carriage of narcotic drugs, marihuana, and depressant or stimulant drugs or substances.
• Sec. 125.41 - Availability of certificate and operations specifications.
• Sec. 125.43 - Use of operations specifications.
• Sec. 125.45 - Inspection authority.
• Sec. 125.47 - Change of address.
• Sec. 125.49 - Airport requirements.
• Sec. 125.51 - En route navigational facilities.
• Sec. 125.53 - Flight locating requirements.

Subpart C - Manual Requirements
 

• Sec. 125.71 - Preparation.
• Sec. 125.73 - Contents.
• Sec. 125.75 - Airplane flight manual.

Subpart D - Airplane Requirements
 

• Sec. 125.91 - Airplane requirements: General.
• Sec. 125.93 - Airplane limitations.

Subpart E - Special Airworthiness Requirements
 

• Sec. 125.111 - General.
• Sec. 125.113 - Cabin interiors.
• Sec. 125.115 - Internal doors.
• Sec. 125.117 - Ventilation.
• Sec. 125.119 - Fire precautions.
• Sec. 125.121 - Proof of compliance with §125.119.
• Sec. 125.123 - Propeller deicing fluid.
• Sec. 125.125 - Pressure cross-feed arrangements.
• Sec. 125.127 - Location of fuel tanks.
• Sec. 125.129 - Fuel system lines and fittings.
• Sec. 125.131 - Fuel lines and fittings in designated fire zones.
• Sec. 125.133 - Fuel valves.
• Sec. 125.135 - Oil lines and fittings in designated fire zones.
• Sec. 125.137 - Oil valves.
• Sec. 125.139 - Oil system drains.
• Sec. 125.141 - Engine breather lines.
• Sec. 125.143 - Firewalls.
• Sec. 125.145 - Firewall construction.
• Sec. 125.147 - Cowling.
• Sec. 125.149 - Engine accessory section diaphragm.
• Sec. 125.151 - Powerplant fire protection.
• Sec. 125.153 - Flammable fluids.
• Sec. 125.155 - Shutoff means.
• Sec. 125.157 - Lines and fittings.
• Sec. 125.159 - Vent and drain lines.
• Sec. 125.161 - Fire-extinguishing systems.
• Sec. 125.163 - Fire-extinguishing agents.
• Sec. 125.165 - Extinguishing agent container pressure relief.
• Sec. 125.167 - Extinguishing agent container compartment temperature.
• Sec. 125.169 - Fire-extinguishing system materials.
• Sec. 125.171 - Fire-detector systems.
• Sec. 125.173 - Fire detectors.
• Sec. 125.175 - Protection of other airplane components against fire.
• Sec. 125.177 - Control of engine rotation.
• Sec. 125.179 - Fuel system independence.
• Sec. 125.181 - Induction system ice prevention.
• Sec. 125.183 - Carriage of cargo in passenger compartments.
• Sec. 125.185 - Carriage of cargo in cargo compartments.
• Sec. 125.187 - Landing gear: Aural warning device.
• Sec. 125.189 - Demonstration of emergency evacuation procedures.

Subpart F - Instrument and Equipment Requirements
 

• Sec. 125.201 - Inoperable instruments and equipment.
• Sec. 125.203 - Radio and navigational equipment.
• Sec. 125.204 - Portable electronic devices.
• Sec. 125.205 - Equipment requirements: Airplanes under IFR.
• Sec. 125.206 - Pitot heat indication systems.
• Sec. 125.207 - Emergency equipment requirements.
• Sec. 125.209 - Emergency equipment: Extended overwater operations.
• Sec. 125.211 - Seat and safety belts.
• Sec. 125.213 - Miscellaneous equipment.
• Sec. 125.215 - Operating information required.
• Sec. 125.217 - Passenger information.
• Sec. 125.219 - Oxygen for medical use by passengers.
• Sec. 125.221 - Icing conditions: Operating limitations.
• Sec. 125.223 - Airborne weather radar equipment requirements.
• Sec. 125.224 - Traffic Alert and Collision Avoidance System.
• Sec. 125.225 - Flight recorders.
• Sec. 125.226 - Digital flight data recorders.
• Sec. 125.227 - Cockpit voice recorders.

Subpart G - Maintenance
 

• Sec. 125.241 - Applicability.
• Sec. 125.243 - Certificate holder's responsibilities.
• Sec. 125.245 - Organization required to perform maintenance, preventive maintenance, and alteration.
• Sec. 125.247 - Inspection programs and maintenance.
• Sec. 125.248 - Repair assessment for pressurized fuselages.
• Sec. 125.249 - Maintenance manual requirements.
• Sec. 125.251 - Required inspection personnel.

Subpart H - Airman and Crewmember Requirements
 

• Sec. 125.261 - Airman: Limitations on use of services.
• Sec. 125.263 - Composition of flightcrew.
• Sec. 125.265 - Flight engineer requirements.
• Sec. 125.267 - Flight navigator and long-range navigation equipment.
• Sec. 125.269 - Flight attendants.
• Sec. 125.271 - Emergency and emergency evacuation duties.

Subpart I - Flight Crewmember Requirements
 

• Sec. 125.281 - Pilot-in-command qualifications.
• Sec. 125.283 - Second-in-command qualifications.
• Sec. 125.285 - Pilot qualifications: Recent experience.
• Sec. 125.287 - Initial and recurrent pilot testing requirements.
• Sec. 125.289 - Initial and recurrent flight attendant crewmember testing requirements.
• Sec. 125.291 - Pilot in command: Instrument proficiency check requirements.
• Sec. 125.293 - Crewmember: Tests and checks, grace provisions, accepted standards.
• Sec. 125.295 - Check airman authorization: Application and issue.
• Sec. 125.296 - Training, testing, and checking conducted by training centers: Special rules.
• Sec. 125.297 - Approval of flight simulators and flight training devices.

Subpart J - Flight Operations
 

• Sec. 125.311 - Flight crewmembers at controls.
• Sec. 125.313 - Manipulation of controls when carrying passengers.
• Sec. 125.315 - Admission to flight deck.
• Sec. 125.317 - Inspector's credentials: Admission to pilots' compartment: Forward observer's seat.
• Sec. 125.319 - Emergencies.
• Sec. 125.321 - Reporting potentially hazardous meteorological conditions and irregularities of ground and navigation facilities.
• Sec. 125.323 - Reporting mechanical irregularities.
• Sec. 125.325 - Instrument approach procedures and IFR landing minimums.
• Sec. 125.327 - Briefing of passengers before flight.
• Sec. 125.328 - Prohibition on crew interference.
• Sec. 125.329 - Minimum altitudes for use of autopilot.
• Sec. 125.331 - Carriage of persons without compliance with the passenger-carrying provisions of this part.
• Sec. 125.333 - Stowage of food, beverage, and passenger service equipment during airplane movement on the surface, takeoff, and landing.

Subpart K - Flight Release Rules
 

• Sec. 125.351 - Flight release authority.
• Sec. 125.353 - Facilities and services.
• Sec. 125.355 - Airplane equipment.
• Sec. 125.357 - Communication and navigation facilities.
• Sec. 125.359 - Flight release under VFR.
• Sec. 125.361 - Flight release under IFR or over-the-top.
• Sec. 125.363 - Flight release over water.
• Sec. 125.365 - Alternate airport for departure.
• Sec. 125.367 - Alternate airport for destination: IFR or over-the-top.
• Sec. 125.369 - Alternate airport weather minimums.
• Sec. 125.371 - Continuing flight in unsafe conditions.
• Sec. 125.373 - Original flight release or amendment of flight release.
• Sec. 125.375 - Fuel supply: Nonturbine and turbopropeller-powered airplanes.
• Sec. 125.377 - Fuel supply: Turbine-engine-powered airplanes other than turbopropeller.
• Sec. 125.379 - Landing weather minimums: IFR.
• Sec. 125.381 - Takeoff and landing weather minimums: IFR.
• Sec. 125.383 - Load manifest.

Subpart L - Records and Reports
 

• Sec. 125.401 - Crewmember record.
• Sec. 125.403 - Flight release form.
• Sec. 125.405 - Disposition of load manifest, flight release, and flight plans.
• Sec. 125.407 - Maintenance log: Airplanes.
• Sec. 125.409 - Reports of defects or unairworthy conditions.
• Sec. 125.410 - Service difficulty reports (structural).
• Sec. 125.411 - Airworthiness release or maintenance record entry.

Appendices

• Appendix A to Part 125 - Additional Emergency Equipment
• Appendix B to Part 125 - Criteria for Demonstration of Emergency Evacuation Procedures Under §125.189
• Appendix C to Part 125 - Ice Protection
• Appendix D to Part 125 - Airplane Flight Recorder Specification
• Appendix E to Part 125 - Airplane Flight Recorder Specifications

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