AC 25-22

Advisory circular · Certification of Transport Airplane Mechanical Systems

Approved
March 14, 2000
Last reviewed
January 30, 2020
Cancels
AC25-14
Family
AC 25-22 · 1 version
14 CFR parts
25

Guidance, not mandatory unless a rule or AD requires it. DRS record last changed October 23, 2026.

Show pages 198–209
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APPENDIX 4

7. Cross Reference for Other Handbooks.

While not regulatory in nature, these handbooks contain information that may be of interest to an applicant. These documents provide additional information, guidance, and/or standards. Copies of the handbooks are available from the FAA Transport Airplane Directorate, 1601 Lind Ave. SW, Renton, WA 98055, USA.

Part 25 Airworthiness Standards: Transport Category Airplanes Mechanical Systems

Subpart B - Performance

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

25.109 Accelerate-stop distance x x x

25.125 Landing x x x

Subpart C - Structures

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Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

25.581 Lightning protection x x

Subpart D - Design and Construction

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

Control Systems

25.671 General x x x

25.672 Stability augmentation x x

25.677 Trim systems x

25.699 Lift and drag device ind.

x

25.701 Flap interconnection x x x x

25.703 Takeoff warning system x

Landing Gear

25.729 Retracting mechanism x x x x

25.731 Wheels x x x

25.733 Tires x x

25.735 Brakes x x x x

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Personnel/Cargo Accommodation

25.773 Pilot compartment view x x x

25.783 Doors x x x

Ventilation and Heating

25.831 Ventilation x x

25.832 Cabin ozone concentration x

25.833 Combustion heating systems x

Pressurization

25.841 Pressurized cabins x x

25.843 Tests for pressurized cabins

x x

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

Fire Protection

25.851 Fire extinguishers x x

25.854 Lavatory fire protection x

25.855 Cargo or baggage compartments

x x

25.857 Cargo compartment classification x x

25.858 Cargo Compartment 191

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fire detection systems x

25.863 Flammable fluid fire protection

x x

25.865 Fire protection of flight controls

x

x

25.869 Fire protection:

systems x x x

Subpart E - Powerplant

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

General

25.943 Negative acceleration x x x

Fuel System Components

25.1001 Fuel jettisoning system x x x x

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Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

Powerplant Fire Protection

25.1183 Flammable fluidcarrying components

x x

25.1185 Flammable fluids x x

25.1189 Shutoff means x x

Subpart F - Equipment

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthiness Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

General

25.1301 Function and installation x x x x x

25.1309 Equipment, system, & installation

x

x

x x

x

25.1316 System lightning protection x

x

25.1322 Warning, caution, & advisory

x

x

25.1351 System lightning protection x

x 193

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25.1359 Electrical system fire & smoke protection (now 25.869)

x

x

Safety Equipment

25.1419 Ice protection x x

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

Miscellaneous Equipment

25.1431 Electronic equipment x x x x

25.1433 Vacuum systems x

25.1435 Hydraulic systems x

25.1438 Pressurization & pneumatic systems

x

25.1439 Protective breathing equipment x

25.1441 Oxygen equipment and supply x

25.1443 Minimum mass flow of supplemental oxygen x

25.1445 Equipment standards for oxygen distributing system

x

25.1447 Equipment standards for oxygen dispensing units x

25.1449 Means for 194

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determining use of oxygen x

25.1450 Chemical oxygen generators x

25.1451 Fire protection:

oxygen equipment (now 25.869)

x

25.1453 Protection of oxygen equipment from rupture

x

25.1455 Draining of fluids subject to freezing

x

25.1461 Equipment containing high energy rotors x 195

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Subpart G- Operating Limitations

Section

Subject Order 8110.8 AC 25-7A AC Draft Propulsion Handbook AC 25- 21 AC Draft Crashworthin ess Handbook AC Draft Electrical Systems Handbook AC Draft Mechanical Systems Handbook

General

25.1529 Instructions for continued airworthiness

x

25.1541 Markings and placards x

25.1557 Miscellaneous markings and placards x

25.1581 Airplane flight manual x

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