Amendment Effective Date Subject
Part 23(N) 2/1/1965 Adoption of Part 23
23-1 7/29/1965 Altimeter System Requirements
23-2 8/1/1965 Limited Weight Credit for Airplanes Equipped with Standby Power
23-3 11/11/1965 One Engine Inoperative Stalls
23-4 4/14/1967 Performance of Lazy Eights & Chandelles in Normal Category Airplanes
23-5 6/4/1967 Miscellanenous Aircraft Propulsion System Design Requirements
23-6 8/1/1967 Altimeter System Requirements
23-7 9/14/1969 Small Airplane Type Certification Requirements
23-8 2/5/1970 Maintenance Manual Requirements
23-9 6/17/1970 Installation and Operating Requirements for Oxygen Equipment and Supply
23-10 3/13/1971 Airworthiness Standards
23-11 8/11/1971 Anticollision Light Standards
23-12 11/5/1971 Position Light Dihedral Angles
23-13 10/23/1972 Airplane and Rotorcraft Manuals, Markings and Placards
23-14 12/20/1973 Type Certification Standards
23-15 10/31/1974 Aircraft and Aircraft Engines - Certification Procedures and Type Certification Standards
23-16 2/14/1975 Form Number and Clarifying Revisions
23-17 2/1/1977 Airworthiness Review Program
23-18 5/2/1977 Airworthiness Review Program - Amendment 4: Powerplant Amendments
23-19 7/18/1977 Crashworthiness: Installation of Shoulder Harnesses in Small Airplanes
23-20 9/1/1977 Airworthiness Review Program - Amendment 5: Equipment and System Amendments
23-21 3/1/1978 Performance and minimum control speed
23-22 12/4/1978 Safety Belts and Harnesses
23-23 12/1/1978 Subpart D Design and Construction
23-24 12/31/1979 Aircraft Wheel and Brake Assemblies
23-25 3/6/1980 Compartment Interiors
23-26 10/14/1980 Landing Gear Extension and Retraction; Instructions for Continued Airworthiness; Appendix G
23-27 11/19/1980 Combusion Heater Fire Protection
Change 15 12/8/1980 Special Federal Aviation Regulations (SFAR) 41
23-28 4/28/1982 Appendix A, Simplified Design Load Criteria
Change 17 9/13/1982 SFAR 41C
23-29 3/26/1984 Engine and Related Powerplant Installation Amendments
23-30 3/29/1984 Oxygen Dispensing Equipment
23-31 12/28/1984 Whirl Mode Instability Analysis
23-32 12/12/1985 Shoulder Harnesses
23-33 8/11/1986 Standardization of Cockpit Controls
23-34 2/17/1987 Commuter Category
23-35 10/11/1988 Cockpit Voice Records and Flight Recorders
23-36 9/14/1988 Emergency Landing Conditions; Personnel and Cargo Accomodations
23-37 8/18/1990 Appendix G
23-38 10/16/1989 Fatigue Evaluation
23-39 5/2/1990 Minor Changes to Commuter Category
23-40 9/10/1990 Fuel Venting and Exhaust Emission Requirements
23-41 11/26/1990 Electronic Display Instrument Systems
23-42 2/4/1990 Canard or Tandem Wing Configurations
23-43 5/10/1993 Small Airplane Airworthiness Review Program Amendment No. 3, (Powerplant and Equipment Standards)
23-44 8/18/1993 Stall Speed Gerater than 61 Knots
23-45 9/7/1993 Numerous changes in Subparts B, C, D, G, Appendix D, and Adds Appendix I
23-46 6/16/1994 Emergency Exit Provisions
23-47 12/28/1995 Revision of Authority Citations
23-48 3/11/1996 Airframe Rules Based on European Joint Aviation Requirements
23-49 3/11/1996 Systems and Equipment Rules Based on European Join Aviation Requirements
23-50 3/11/1996 Flight Rules Based on European Join Aviation Requirements
23-51 3/11/1996 Powerplant Rules Based on European Join Aviation Requirements
23-52 7/25/1996 Powerplant Instruments; Fuel Pressure Indication
23-53 3/26/1998 Rain and Hail Ingestion Standards
23-54 9/13/2000 Engine Foreign Object Ingestion Requirements for Turbine Engines
23-55 3/3/2002 Authority Citation Change, Deletion of SFAR 41