AC 23-24

Advisory circular · Airworthiness Compliance Checklists for Common Part 23 Supplemental Type Certificate (STC) Projects

Approved
August 24, 2005
Last reviewed
April 13, 2017
Family
AC 23-24 · 1 version
14 CFR parts
23

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

Show pages 40–51

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable AC 23-24 8/24/05 Appendix 1

A1-22 A1-22 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.959 Unusable fuel supply.

(3.437(a) (less last sent.), 3.437 (less

(a))) AN, GT, FT AC 23-8B, AC 23-16A

23.961 Fuel system hot weather operation. (3.438)

DE, AN, GT, FT AC 23-8B, AC 23-16A

23.963 Fuel tanks: General. (3.440 (less last two sent.)) DE, AN, GT AC 23-16A

23.965 Fuel tank tests. (3.441) AN, GT AC 23-16A

23.967 Fuel tank installation. (3.442,

3.442-1) DE, AN AC 23-16A

23.969 Fuel tank expansion space.

(3.443) DE, AN AC 23-16A

23.971 Fuel tank sump. (3.444) DE, AN AC 23-16A

23.973 Fuel tank filler connection.

(3.445) DE, AN AC 23-16A

23.975 Fuel tank vents and carburetor vapor vents. (3.446, 3.447A)

DE, AN, GT, FT AC 23-16A

23.977 Fuel tank outlet. (3.448) DE, AN AC 23-16A

23.979 Pressure fueling systems. DE, GT AC 23-16A

FUEL SYSTEM COMPONENTS

23.991 Fuel pumps. (3.449, 3.449-1) DE, AN, GT, FT AC 23-16A Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.993 Fuel system lines and fittings.

(3.550) DE, AN, GT AC 23-16A

23.994 Fuel system components. DE, AN AC 23-16A

23.995 Fuel valves and controls.

(3.551, 3.633) DE, AN, FT AC 23-16A

23.997 Fuel strainer or filter. (3.552) DE, AN, GT AC 23-16A

23.999 Fuel system drains. (3.553) DE, AN, GT AC 23-16A

23.1001 Fuel jettisoning system. DE, AN, GT, FT AC 23-8B, AC 23-16A

OIL SYSTEM

23.1011 General. (3.561, 3.561-1(b)) DE, AN, GT, FT AC 23-16A

23.1013 Oil tanks. (3.563, 3.565,

3.566, 3.567, 3.568, 3.569) DE, AN, GT AC 23-2, AC 23-16A

23.1015 Oil tank tests. (3.564) AN, GT AC 23-16A

23.1017 Oil lines and fittings. (3.570,

3.575) DE, GT AC 23-16A

23.1019 Oil strainer or filter. (3.573) AN, GT AC 23-16A

23.1021 Oil system drains. (3.574) AN, GT AC 23-16A

23.1023 Oil radiators. (3.572) GT AC 23-16A

23.1027 Propeller feathering system.

(3.577) AN, GT, FT AC 23-8B, AC 23-16A A1-23 A1-23 Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable AC 23-24 8/24/05 Appendix 1

A1-24 A1-24 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

COOLING

23.1041 General. (3.581) AN, GT, FT AC 23-8B, AC 23-16A

23.1043 Cooling tests. (3.582, 3.582- 1, 3.583, 3.583-1 (1st sent.), 3.584,

3.585) AN, GT, FT AC 23-8B, AC 23-16A

23.1045 Cooling test procedures for turbine engine powered airplanes.

(3.586) AN, GT, FT AC 23-8B, AC 23-16A

23.1047 Cooling test procedures for reciprocating engine powered airplanes.

(3.587) AN, GT, FT AC 23-8B, AC 23-16A

LIQUID COOLING

23.1061 Installation. (3.588. 3.589,

3.591, 3.592, 3.593, 3.594, 3.595) DE, AN AC 23-16A

23.1063 Coolant tank tests. (3.590) AN, GT AC 23-16A

INDUCTION SYSTEM

23.1091 Air induction system.

(3.605)

DE, AN, GT, FT AC 23-2, AC 23-8B, AC 23-16A Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1093 Induction system icing protection. (3.606)

DE, SI, AN, GT, FT AC 23-8B, AC 23-16A

23.1095 Carburetor deicing fluid flow rate. (3.607) AN, GT AC 23-16A

23.1097 Carburetor deicing fluid system capacity. (3.608) DE, AN AC 23-16A

23.1099 Carburetor deicing fluid system detail design. (3.609) DE, AN AC 23-16A

23.1101 Induction air preheater design. (3.610) DE, AN AC 23-16A

23.1103 Induction system ducts.

(3.611) DE, AN AC 23-16A

23.1105 Induction system screens.

(3.612) DE, AN AC 23-16A

23.1107 Induction system filters. DE, AN, GT AC 23-16A

23.1109 Turbocharger bleed air system.

DE, AN, GT AC 23-16A

23.1111 Turbine engine bleed air system.

DE, AN, GT, FT AC 23-16A

EXHAUST SYSTEM

23.1121 General. (3.615) DE, AN, GT, FT AC 23-16A A1-25 A1-25 Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

pliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable Page ___ of ___

AC 23-24 8/24/05 Appendix 1

A1-26 A1-26 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1123 Exhaust system. (3.616) DE, AN, GT, FT AC 23-16A

23.1125 Exhaust heat exchangers.

(3.617, 3.618)

DE, AN, GT, FT AC 23-16A

POWERPLANT CONTROLS AND

ACCESSORIES

*Methods of Com

23.1141 Powerplant controls: General.

(3.627)

DE, AN, GT, FT AC 23-8B, AC 23-16A

23.1142 Auxiliary power unit controls.

DE, AN, GT, FT AC 23-16A

23.1143 Engine controls. (3.628) DE, AN, FT AC 23-16A

23.1145 Ignition switches. (3.629) DE, AN AC 23-8B, AC 23-16A

23.1147 Mixture controls. (3.630) DE, AN, FT AC 23-16A

23.1149 Propeller speed and pitch controls. (3.631)

DE, AN, GT, FT AC 23-16A

23.1153 Propeller feathering controls.

(3.632)

DE, AN, GT, FT AC 23-8B, AC 23-16A

23.1155 Turbine engine reverse thrust and propeller pitch settings below the flight regime.

DE, AN, GT, FT AC 23-16A

23.1157 Carburetor air temperature controls. (3.634) AN, GT AC 23-16A

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1163 Powerplant accessories.

(3.635) DE, AN AC 23-16A

23.1165 Engine ignition systems.

(3.636) AN, GT, FT AC 23-16A

POWERPLANT FIRE

PROTECTION

23.1181 Designated fire zones;

regions included.

DE AC 23-16A

23.1182 Nacelle areas behind firewalls.

DE, AN, GT AC 23-16A

23.1183 Lines, fittings, and components. (3.638) DE, AN, GT AC 23-2, AC 23-16A

23.1189 Shutoff means. (3.637) DE, AN, GT AC 23-2, AC 23-8B, AC 23-16A

23.1191 Firewalls. (3.623, 3.623-1,

3.624) DE, AN, GT AC 23-2, AC 23-16A

23.1192 Engine accessory compartment diaphragm.

DE, AN, GT AC 23-2, AC 23-16A

23.1193 Cowling and nacelle. (3.625) DE, AN, GT AC 23-2, AC 23-16A

23.1195 Fire extinguishing systems. DE, AN, GT, FT AC 23-16A

23.1197 Fire extinguishing agents. DE, AN, GT AC 23-16A A1-27 A1-27 Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable A1-28 A1-28 AC 23-24 8/24/05 Appendix 1

Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1199 Extinguishing agent containers.

DE, AN AC 23-16A

23.1201 Fire extinguishing systems materials.

DE, AN, GT AC 23-16A

23.1203 Fire detector system. DE, AN, GT AC 23-16A

Subpart F -- Equipment

GENERAL

23.1301 Function and installation.

(3.651 (less 1st sent.), 3.652, 3.652-1)

DE, AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1303 Flight and navigation instruments. (3.655(a))

DE, AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1305 Powerplant instruments.

(3.655(b)) DE, GT, FT AC 23-8B, AC 23-17B

23.1307 Miscellaneous equipment.

(3.655(d)(1), 3.655 (less (a), (b), and

(d))) DE AC 23-8B, AC 23-17B

23.1309 Equipment, systems, and installations.

AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1309-1C, AC 23.1311-1A, AC 20-136, PS-ACE100-2001-004

Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks INSTRUMENTS: INSTALLATION

23.1311 Electronic display instrument systems.

DE, AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1321 Arrangement and visibility.

(3.661, 3.662) DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1322 Warning, caution, and advisory lights.

DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1323 Airspeed indicating system.

(3.663) DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1325 Static pressure system.

(3.665) DE, GT, FT AC 23-8B, AC 23-17B

23.1326 Pitot heat indication systems. DE, GT, FT AC 23-8B, AC 23-17B, PS-ACE100-2002-007

23.1327 Magnetic direction indicator.

(3.666) GT, FT AC 23-8B, AC 23-17B

23.1329 Automatic pilot system.

(3.667) DE, GT, FT AC 23-8B, AC 23-17B

23.1331 Instruments using a power source. (3.668)

DE, AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1335 Flight director systems.

(3.669) DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A A1-29 A1-29 Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable AC 23-24 8/24/05 Appendix 1

A1-30 A1-30 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1337 Powerplant instruments installation. (3.671, 3.672, 3.672-1,

3.673, 3.674, 3.675) DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

ELECTRICAL SYSTEMS AND

EQUIPMENT

23.1351 General. (3.681, 3.682,

3.685, 3.686, 3.687) (DE and AN) or GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1353 Storage battery design and installation. (3.683) AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1357 Circuit protective devices.

(3.690, 3.691, 3.692) DE, AN, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1359 Electrical system fire protection.

AN, GT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2004-10023

23.1361 Master switch arrangement.

(3.688, 3.689) DE, GT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1365 Electric cables and equipment. (3.693) DE, AN, GT AC 23-8B, AC 23-17B, AC 23.1311-1A

23.1367 Switches. (3.694, 3.695) DE, GT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks LIGHTS

23.1381 Instrument lights. (3.696,

3.696-1, 3.697) DE, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, PS-ACE100-2001-004

23.1383 Taxi and landing lights.

(3.698, 3.699) DE, FT AC 23-8B, AC 23-17B

23.1385 Position light system installation. (3.700) DE, AN, GT AC 23-17B, AC 20-74

23.1387 Position light system dihedral angles. (3.701) DE, AN, GT AC 23-17B, AC 20-7

23.1389 Position light distribution and intensities. (3.702, 3.702-1, 3.702-2) DE, AN, GT AC 23-17B

23.1391 Minimum intensities in the horizontal plane of position lights.

(Figure 3-15) DE, GT AC 23-17B

23.1393 Minimum intensities in any vertical plane of position lights.

(Figure 3-16) DE, GT AC 23-17B

23.1395 Maximum intensities in overlapping beams of position lights.

(Figure 3-17) DE, GT AC 23-17B

23.1397 Color specifications. (3.703) GT AC 23-17B

23.1399 Riding light. (3.704) GT AC 23-17B

23.1401 Anticollision light system.

(3.705, 3.705-1 (1st sent.), Figure 3-18)

DE, AN, GT, FT AC 23-17B, AC 20-74 A1-31 A1-31 Page ___ of ___

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

pliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable Page ___ of ___

*Methods of Com AC 23-24 8/24/05 Appendix 1

A1-32 A1-32 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

SAFETY EQUIPMENT

23.1411 General. (3.711 (1st through 27th words)) DE AC 23-8B, AC 23-17B

23.1415 Ditching equipment. (3.716,

3.717, 3.718) DE, GT AC 23-8B, AC 23-17B

23.1416 Pneumatic de-icer boot system.

DE, GT AC 23-8B, AC 23-17B, AC 23.1419-2C, AC 20-73, AC 23.143-1

23.1419 Ice protection. (3.712) DE, SI, AN,

GT, FT, PExmpt AC 23-8B, AC 23-17B, AC 23.1419-2C, AC 20-73, AC 23.143-1 The analysis and tests to be conducted must be specified. An exemption ma y be required for stall speed in icing.

MISCELLANEOUS EQUIPMENT

23.1431 Electronic equipment.

(3.721) AN, GT, FT AC 23-8B, AC 23-17B, AC 23.1311-1A, AC 20-136, PS-ACE100-2001-004

23.1435 Hydraulic systems. (3.726,

3.727, 3.728) AN, GT AC 23-8B, AC 23-17B

23.1437 Accessories for multiengine airplanes. (3.725) DE AC 23-17B

Supplemental Type Certificate Compliance Checklist Project Number: Date:

Originator: Revision:

*Methods of Compliance:

FT = Flight Test, GT = Ground Test, AN = Analysis, DE = Design, SI = Similarity, ELOS = Equivalent Level of Safety Finding, PExmpt = Petition for Exemption, N/A = Not Applicable 8/24/05 AC 23-24 AC 23-24 Appendix 1Appendix 1 Regulation Regulation Title 14 CFR (1964 CAR 3) Title 14 CFR (1964 CAR 3) Applicable Amendment Applicable Amendment Method of Compliance* Method of Compliance* Plan, Drawing, Report Number Plan, Drawing, Report Number Person or Entity Finding Compliance Person or Entity Finding Compliance Applicable Guidance, References, & Remarks Applicable Guidance, References, & Remarks

23.1438 Pressurization and pneumatic systems.

AN or GT AC 23-17B

23.1441 Oxygen equipment and supply.

DE AC 23-8B, AC 23-17B

23.1443 Minimum mass flow of supplemental oxygen.

AN AC 23-17B

23.1445 Oxygen distribution system. DE AC 23-17B

23.1447 Equipment standards for oxygen dispensing units.

DE, GT, FT AC 23-8B, AC 23-17B

23.1449 Means for determining use of oxygen.

DE AC 23-8B, AC 23-17B

23.1450 Chemical oxygen generators. DE AC 23-17B

23.1451 Fire protection for oxygen equipment.

DE AC 23-17B

23.1453 Protection of oxygen equipment from rupture.

DE, GT AC 23-17B

23.1457 Cockpit voice recorders. DE, GT, FT AC 23-8B, AC 23-17B

23.1459 Flight recorders. DE, GT, FT AC 23-8B, AC 23-17B

23.1461 Equipment containing high energy rotors.

AN, GT AC 23-17B

Subpart G -- Operating Limitations and Information

23.1501 General. (3.735, 3.737) DE, FT AC 23-8B, AC 23.1311-1A A1-33 A1-33 Page ___ of ___