Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 13911 

1Ref Public Law 104–113 as amended by Public 

Law 107–107. 

2Ref Public Law 113–53. 

3See https://www.federalregister.gov/documents/ 

2016/12/30/2016-30246/revision-of-airworthinessstandards-for-normal-utility-acrobatic-andcommuter-category-airplanes. 

4See https://drs.faa.gov/browse. 

5The means of compliance are inteded for 

traditional part 23 airplanes, not for novel designs. 

Novel designs require evaluation and possible 

modification of the means of compliance. 

6 You may find additional information on the 

FAA Small Airplane Issues List (SAIL) here: https:// 

www.faa.gov/aircraft/air_cert/design_approvals/ 

small_airplanes/small_airplanes_regs/. 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 23 

[Docket No. FAA–2022–0217; Notice No. 

NOA–23–22–01] 

Accepted Means of Compliance; 

Airworthiness Standards: Normal 

Category Airplanes 

AGENCY: Federal Aviation 

Administration, Department of 

Transportation (DOT). 

ACTION: Issuance of accepted means of 

compliance. 

SUMMARY: This document announces 

ASTM International (ASTM) consensus 

standards for use as a means of 

compliance to the applicable 

airworthiness standards for normal 

category airplanes. The FAA accepts 

ASTM Designation F3264–21 as a 

means of compliance for applicable 

airworthiness standards for normal 

category airplanes, with the changes 

identified in Table 1 of this document. 

For ease of use, Table 2 provides a sideby-side view, linking applicable 

regulations to the associated ASTM 

sections. 

DATES: The FAA accepts the means of 

compliance effective March 11, 2022. 

FOR FURTHER INFORMATION CONTACT: 

Hieu Nguyen, Federal Aviation 

Administration, Policy and Innovation 

Division, Small Airplane Strategic 

Policy Section, AIR–615, 901 Locust 

Street, Room 301, Kansas City, Missouri 

64106; telephone (316) 946–4123; 

facsimile: (316) 946–4107; email: 

hieu.nguyen@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

Under the provisions of the National 

Technology Transfer and Advancement 

Act of 1995 1 and Office of Management 

and Budget (OMB) Circular A–119, 

‘‘Federal Participation in the 

Development and Use of Voluntary 

Consensus Standards and in Conformity 

Assessment Activities,’’ effective 

January 27, 2016, the FAA participates 

in the development of consensus 

standards and uses consensus standards 

as a means of carrying out its policy 

objectives where appropriate. 

Consistent with the Small Airplane 

Revitalization Act of 2013,2 the FAA has 

been working with industry and other 

stakeholders through the ASTM 

International (ASTM) F44 Committee on 

General Aviation Aircraft to develop 

consensus standards as a means of 

compliance in certificating small 

airplanes under title 14, Code of Federal 

Regulations (14 CFR), part 23. 

In part 23, amendment 23–64 3 (81 FR 

96572, published on December 30, 

2016), the final rule described the FAA 

would publish those consensus 

standards in the Federal Register, when 

the Administrator accepts the consensus 

standards as an acceptable means of 

compliance. 

Additionally, the FAA published 

Advisory Circular (AC) 23.2010–1,4

dated March 27, 2017, titled ‘‘FAA 

Accepted Means of Compliance Process 

for 14 CFR part 23’’. In paragraph 5.5, 

the AC also describes that a notice will 

be published when the Administrator 

accepts a standard. 

The means of compliance accepted by 

this document is one means, but not the 

only means of complying with part 23 

regulatory requirements. 

The FAA reviewed the published 

ASTM consensus standards developed 

by ASTM Committee F44 as the basis 

for means of compliance to 65 sections 

of part 23, amendment 23–64. 

In some cases, the Administrator 

found sections of the ASTM Standard 

Designation F3264–21, titled ‘‘Standard 

Specification for Normal Category 

Aeroplanes Certification,’’ without 

changes, accepted as means of 

compliance with the airworthiness 

requirements of amendment 23–64, and 

within the scope and applicability of the 

consensus standards. 

In other cases, the means of 

compliance, while based on ASTM 

consensus standards, include additional 

FAA provisions necessary to comply 

with the airworthiness requirements of 

amendment 23–64. 

Applicants who desire to use means 

of compliance reflected by other 

revisions to ASTM standards not 

previously accepted, may seek guidance 

and possible acceptance from the FAA 

for the use of those means of 

compliance on a case-by-case basis. 

Applicants may also propose alternative 

means of compliance for FAA review 

and possible acceptance. 

Part 23, amendment 23–64, 

established airworthiness requirements 

based on the safety requirements 

outlined in amendment 23–63, except in 

areas that address loss of control and 

icing, where the FAA increased the 

safety level. Depending on the details of 

a design, the applicant may require use 

of a different means of compliance 

beyond those accepted by this 

document. For example, novel airplane 

designs, such as unmanned airplanes or 

vertical takeoff and landing airplanes, 

may be outside the scope of this 

document, and applicants may need to 

propose alternative means of 

compliance applicable to their designs 

accepted under § 23.2010. 

Means of Compliance Accepted 

This document accepts only the 

revisions of the standards referenced in 

ASTM International Standard 

Designation (ASTM) F3264–21, 

‘‘Standard Specification for Normal 

Category Aeroplanes Certification.’’ 

Table 1. The FAA accepts ASTM 

F3264–21 as a means of compliance for 

part 23, amendment 23–64, with the 

changes identified. 

Table 2. For ease of use, Table 2 

provides a side-by-side view, linking the 

applicable part 23 regulations to the 

ASTM F3264–21 sections. The ASTM 

F3264–21 sections must incorporate the 

changes required for FAA acceptance 

from Table 1. 

TABLE 1—PART 23 ACCEPTED MEANS OF COMPLIANCE BASED ON ASTM CONSENSUS STANDARDS

ASTM designation No. ASTM document title Changes required for FAA acceptance 5 Additional information 6

F2490–20 .................... Standard Guide for 

Aircraft Electrical 

Load and Power 

Source Capacity 

Analysis.

None. 


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TABLE 1—PART 23 ACCEPTED MEANS OF COMPLIANCE BASED ON ASTM CONSENSUS STANDARDS—Continued 

ASTM designation No. ASTM document title Changes required for FAA acceptance 5 Additional information 6

F3061/F3061M–20 ...... Standard Specification 

for Systems and 

Equipment in Small 

Aircraft.

Remove: Tables 1, 3, 4, 5, 13 and 14 ...........

Replace 17.3.1 with the following: 

(a) Each electrical or electronic system that 

performs a function, the failure of which 

would prevent the continued safe flight and 

landing of the airplane, must be designed 

and installed such that— 

(1) The function at the airplane level is not 

adversely affected during and after the time 

the airplane is exposed to lightning; and 

(2) The system recovers normal operation of 

that function in a timely manner after the 

airplane is exposed to lightning unless the 

system’s recovery conflicts with other operational or functional requirements of the 

system. 

Aircraft Type Code compliance matrix tables 

found in F3061/F3061M–20 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3061/F3061M–20 does not contain means 

for showing compliance to § 23.2310 Buoyancy for seaplanes and amphibians. If applying for certification of a seaplane or amphibian, applicants may use the provisions 

of §§ 23.751, 23.755, and 23.757 at 

amendment 23–63 as a means of complying with § 23.2310, or may obtain FAA 

acceptance of a different method of compliance in accordance with § 23.2010. 

Replace 17.3.2 with the following: 

(b) Each electrical and electronic system that 

performs a function, the failure of which 

would significantly reduce the capability of 

the airplane or the ability of the flight crew 

to respond to an adverse operating condition, must be designed and installed such 

that the system recovers normal operation 

of that function in a timely manner after the 

airplane is exposed to lightning 

Remove 17.3.3.

F3062/F3062M–20 ...... Standard Specification 

for Aircraft Powerplant Installation.

None. 

F3063/F3063M–20 ...... Standard Specification 

for Aircraft Fuel and 

Energy Storage and 

Delivery.

None. 

F3064/F3064M–21 ...... Standard Specification 

for Aircraft Powerplant Control, Operation, and Indication.

None. 

F3065/F3065M–21a .... Standard Specification 

for Aircraft Propeller 

System Installation.

None. 

F3066/F3066M–18 ...... Standard Specification 

for Aircraft Powerplant Installation 

Hazard Mitigation.

None. 

F3082/F3082M–17 ...... Standard Specification 

for Weights and 

Centers of Gravity 

of Aircraft.

None. 

F3083/F3083M–20a .... Standard Specification 

for Emergency Conditions, Occupant 

Safety and Accommodations.

None. 

F3093/F3093M–21 ...... Standard Specification 

for Aeroelasticity 

Requirements.

None. 

F3114–21 .................... Standard Specification 

for Structures.

None. 

F3115/F3115M–20 ...... Standard Specification 

for Structural Durability for Small 

Aeroplanes.

None ................................................................ If applicant proposes to use F3115/F3115M– 

20 section 4.3 or 6.3.3, Policy & Innovation 

Division will be involved as the standard is 

applied during projects to review the approach to determining similarity (F3115/ 

F3115M–20 section 4.3) and criteria defining obvious damage (F3115/F3115M–20 

section 6.3.3). 


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TABLE 1—PART 23 ACCEPTED MEANS OF COMPLIANCE BASED ON ASTM CONSENSUS STANDARDS—Continued 

ASTM designation No. ASTM document title Changes required for FAA acceptance 5 Additional information 6

F3116/F3116M–18e2 .. Standard Specification 

for Design Loads 

and Conditions.

Replace: Section 4.1.4. 

With: FAA Section 4.1.4 ‘‘Appendix X1 

through Appendix X4 provides, within the 

limitations specified within the appendix, a 

simplified means of compliance with several of the requirements set forth in Sections 4.2 to 4.26 and 7.1 to 7.9 that can be 

applied as one (but not the only) means to 

comply. If the simplified methods in appendix X1 through X3 are used, they must be 

used together in their entirety. 

Replace: Section X1.1.1.

With: FAA Section X1.1.1 ‘‘The methods 

provided in this appendix provide one possible means (but not the only possible 

means) of compliance and can only be applied to level 1 and level 2 low speed airplanes.’’.

Replace: Section X2.1.1.

With: FAA Section X2.1.1 ‘‘The methods 

provided in this appendix provide one possible means (but not the only possible 

means) of compliance and can only be applied to level 1 and level 2 low speed airplanes.’’.

Replace: Section X3.1.1.

With: FAA Section X3.1.1 ‘‘The methods 

provided in this appendix provide one possible means (but not the only possible 

means) of compliance and can only be applied to level 1 and level 2 low speed airplanes.’’.

Replace: Section X4.1.1. 

With: FAA Section X4.1.1 ‘‘The methods provided in this appendix provide one possible 

means (but not the only possible means) of 

compliance and can only be applied to 

level 1 low speed airplanes.’’.

F3117/F3117M–20 ...... Standard Specification 

for Crew Interface in 

Aircraft.

Add: 

4.3 Windshields and Windows. 

4.3.1 For Level 4 airplanes, the windshield 

panels in front of the pilots must be arranged so that, assuming the loss of vision 

through any one panel, one or more panels 

remain available for use by a pilot seated 

at a pilot station to permit continued safe 

flight and landing.

Or For Level 4 Airplanes Add F3117/ 

F3117M—21a Section 4.3.

F3120/F3120M–20 ...... Standard Specification 

for Ice Protection for 

General Aviation.

None. 

F3173/F3173M–21 ...... Standard Specification 

for Aircraft Handling 

Characteristics.

None. 

F3174/F3174M–19 ...... Standard Specification 

for Establishing Operating Limitations 

and Information for 

Aeroplanes.

None. 

F3179/F3179M–20 ...... Standard Specification 

for Performance of 

Aircraft.

None. 

F3180/F3180M–19 ...... Standard Specification 

for Low-Speed 

Flight Characteristics of Aircraft.

FAA does not universally accept F3180/ 

F3180M–19 due to inexperience with Alternative 2 within the standard. FAA previously and continues to accept F3180/ 

F3180M–16.

Applicants are encouraged to consider proposing F3180/F3180M–19, particularly Alternative 2, for development of their method of compliance for low speed handling 

qualities on a project-by-project basis, or 

may obtain FAA acceptance of a different 

method of compliance in accordance with 

§ 23.2010. 


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TABLE 1—PART 23 ACCEPTED MEANS OF COMPLIANCE BASED ON ASTM CONSENSUS STANDARDS—Continued 

ASTM designation No. ASTM document title Changes required for FAA acceptance 5 Additional information 6

F3227/F3227M–21 ...... Standard Specification 

for Environmental 

Systems in Small 

Aircraft.

Remove: Tables 1, 2, and 3 .......................... Aircraft Type Code compliance matrix tables 

found in F3227/F3227M–21, are not accepted. Applicability will be determined by 

the Small Airplane Strategic Policy Section. 

F3228–17 .................... Standard Specification 

for Flight Data and 

Voice Recording in 

Small Aircraft.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3228–17 are not accepted. Applicability will be determined by the Small Airplane Strategic Policy Section. 

F3229/F3229M–17 ...... Standard Practice for 

Static Pressure System Tests in Small 

Aircraft.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3229/F3229M–17 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3230–20a .................. Standard Practice for 

Safety Assessments 

of Systems and 

Equipment in Small 

Aircraft.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3230–20a are not accepted. Applicability will be determined by the Small 

Airplane Strategic Policy Section. 

F3231/F3231M–21 ...... Standard Specification 

for Electrical Systems for Aircraft with 

Combustion Engine 

Electrical Power 

Generation.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3231/F3231M–21 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3232/F3232M–20 ...... Standard Specification 

for Flight Controls in 

Small Aircraft.

Remove: Tables 1 and 2 ............................... Aircraft Type Code compliance matrix tables 

found in F3232/F3232M–20 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3233/F3233M–21 ...... Standard Specification 

for Instrumentation 

in Small Aircraft.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3233/F3233M–21 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3234/F3234M–17 ...... Standard Specification 

for Exterior Lighting 

in Small Aircraft.

Remove: Table 1 ............................................ Aircraft Type Code compliance matrix table 

found in F3234/F3234M–17 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3235–17a .................. Standard Specification 

for Aircraft Storage 

Batteries.

Remove: Section 4.2 

Remove: Table 1. 

If applying for certification of an airplane with 

installed lithium batteries, applicants may 

use the guidance provided by RTCA DO– 

311A, or may obtain FAA acceptance of a 

different method of compliance in accordance with § 23.2010. 

Aircraft Type Code compliance matrix table 

found in F3235–17a are not accepted. Applicability will be determined by the Small 

Airplane Strategic Policy Section. 

F3236–17 .................... Standard Specification 

for High Intensity 

Radiated Field 

(HIRF) Protection in 

Small Aircraft.

Remove: Table 1 ............................................

Revise: Table 2 400 to 700 Mhz frequency 

range field strength average value: 

Replace: ‘‘100 volts/meter.’’ 

With: ‘‘50 volts/meter.’’ 

Aircraft Type Code compliance matrix table 

found in F3236–17 are not accepted. Applicability will be determined by the Small Airplane Strategic Policy Section. 

Replace: Section 4.2.3.3.

With: FAA Section 4.2.3.3 ‘‘From 40 to 400 

MHz, use conducted susceptibility tests, 

starting at a minimum of 30 mA at 40 MHz, 

decreasing 20 dB per frequency decade to 

a minimum of 3 mA at 400 MHz.’’.

F3239–19 .................... Standard Specification 

for Aircraft Electric 

Propulsion Systems.

FAA does not universally accept F3239–19 

due to inexperience with the standard.

Applicants are encouraged to consider proposing F3239–19 for development of their 

method of compliance for electric propulsion systems on a project-by-project basis. 

Any method of compliance proposed must 

establish a level of safety equivalent to certified reciprocating and turbine propulsion 

systems and receive acceptance by FAA in 

accordance with § 23.2010. 

F3254–19 .................... Standard Specification 

for Aircraft Interaction of Systems 

and Structures.

Figures 2, 3 and 4 Replace: ‘‘Remote’’ .........

With: ‘‘10¥5.’’ 

Replace: ‘‘Extremely Improbable.’’ .................

Other proposed probabilities will be considered by the FAA on a case by case basis. 

With: ‘‘10¥8’’ for Level 1, 2 and 3 airplanes 

and with ‘‘10¥9’’ for Level 4 airplanes’’.


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TABLE 1—PART 23 ACCEPTED MEANS OF COMPLIANCE BASED ON ASTM CONSENSUS STANDARDS—Continued 

ASTM designation No. ASTM document title Changes required for FAA acceptance 5 Additional information 6

F3309/F3309M–21 ...... Standard Practice for 

Simplified Safety 

Assessment of Systems and Equipment 

in Small Aircraft.

None. 

F3316/F3316M–19 ...... Standard Specification 

for Electrical Systems for Aircraft with 

Electric or HybridElectric Propulsion.

FAA does not universally accept F3316/ 

F3316M–19 due to inexperience with the 

standard.

Remove: Table 1. 

Applicants are encouraged to consider proposing F3316/F3316M–19 for development 

of their method of compliance for electrical 

systems installed on airplanes with electric 

or hybrid-electric propulsion systems on a 

project-by-project basis. Applicants may 

obtain FAA acceptance of a different method of compliance in accordance with 

§ 23.2010. 

Aircraft Type Code compliance matrix table 

found in F3316/F3316M–19 are not accepted. Applicability will be determined by the 

Small Airplane Strategic Policy Section. 

F3331–18 .................... Standard Practice for 

Aircraft Water Loads.

None. 

F3367–21 .................... Standard Practice for 

Simplified Methods 

for Addressing HighIntensity Radiated 

Fields (HIRF) and 

Indirect Effects of 

Lightning on Aircraft.

Replace: paragraph 5.1.1. 

With: Systems that are part of the Type Certificated Engine must be installed in accordance with the engine manufacturer’s 

requirements. The minimum HIRF and 

lightning qualification in accordance with 

Sections 8 and 9 of this ASTM practice 

should be met at the aircraft level, except 

for engine control systems in Level 1 and 2 

airplanes which should meet the following; 

• HIRF: DO–160, Section 20—R for both radiated and conducted susceptibility.

• Lightning: Utilize Guidance in AC 33.28–3

For metallic fuselage DO–160G, Section 22— 

A3J3L3 (shielded) and A3H3L3 

(unshielded).

For composite fuselage DO–160G, Section 

22—B3K3L3 (shielded) and B3H3L3 

(unshielded).

Use of lower HIRF and lighting induced voltage & current levels may be acceptable for 

electronic engine control systems if substantiated at the airplane level (by test in 

the proposed installation or similar) when 

exposed to external HIRF environment per 

AC20–158A and Lightning per AC20–136B; 

using shielding and grounding of the electronic engine control system and accessories in the given installation.

F3380–19 .................... Standard Practice for 

Structural Compliance of Very Light 

Aeroplanes.

None. 

F3396/F3396M–20 ...... Standard Practice for 

Aircraft Simplified 

Loads.

None. 

F3408/F3408M–21 ...... Standard Specification 

for Aircraft Emergency Parachute 

Recovery Systems.

None. 

F3432–20a .................. Standard Practice for 

Powerplant Instruments.

None. 


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13916 Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

23.1457 ......................... 9.12 Installation of Cockpit Recorders ............. 9.12.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.12.1.1 F3228—17 Standard Specification for Flight Data and 

Voice Recording in Small Aircraft. 

23.1459 ......................... 9.13 Installation of Flight Data Recorders ....... 9.13.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.13.1.1 F3228—17 Standard Specification for Flight Data and 

Voice Recording in Small Aircraft. 

23.1529 ......................... 10.6 Instructions for Continued Airworthiness 10.6.1 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation. 

10.6.2 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

10.6.3 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

Subpart B—Flight: 

23.2100 .................. 5.1 Weight/Mass and Centre of Gravity .......... 5.1.1 F3082/F3082M—17 Standard Specification for Weights and 

Centers of Gravity of Aircraft. 

5.1.2 F3114—21 Standard Specification for Structures. 

23.2105 .................. 5.2 Performance Data ...................................... 5.2.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2110 .................. 5.3 Stall Speed ................................................ 5.3.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2115 .................. 5.4 Takeoff Performance ................................. 5.4.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2120 .................. 5.5 Climb Requirements .................................. 5.5.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2125 .................. 5.6 Climb Information ....................................... 5.6.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2130 .................. 5.7 Landing ...................................................... 5.7.1 F3179/F3179M—20 Standard Specification for Performance of 

Aircraft. 

23.2135 .................. 5.8 Controllability ............................................. 5.8.1 F3173/F3173M—21 Standard Specification for Aircraft Handling 

Characteristics. 

23.2140 .................. 5.9 Trim ............................................................ 5.9.1 F3173/F3173M—21 Standard Specification for Aircraft Handling 

Characteristics. 

23.2145 .................. 5.10 Stability .................................................... 5.10.1 F3173/F3173M—21 Standard Specification for Aircraft Handling Characteristics. 

23.2150 .................. 5.11 Stall Characteristics, Stall Warning, and 

Spins.

5.11.1 F3180/F3180M—19 Standard Specification for Low-Speed 

Flight Characteristics of Aircraft. 

23.2155 .................. 5.12 Ground and Water Handling Characteristics.5.12.1 F3173/F3173M—21 Standard Specification for Aircraft Handling Characteristics. 

23.2160 .................. 5.13 Vibration, Buffeting, and High-Speed 

Characteristics.

5.13.1 F3173/F3173M—21 Standard Specification for Aircraft Handling Characteristics. 

23.2165 .................. 5.14 Performance and Flight Characteristics 

Requirements for Flight in Icing Conditions.

5.14.1 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

Subpart C—Structures: 

23.2200 .................. 6.1 Structural Design Envelope ....................... 6.1.1 F3116/F3116M—18e2 Standard Specification for Design Loads 

and Conditions. 

6.1.1.1 F3396/F3396M—20 Standard Practice for Aircraft Simplified Loads. 

23.2205 .................. 6.2 Interaction of Systems and Structure ........ 6.2.1 F3254—19 Standard Specification for Aircraft Interaction of 

Systems and Structures. 

23.2210 .................. 6.3 Structural Design Loads ............................ 6.3.1 F3116/F3116M—18e2 Standard Specification for Design Loads 

and Conditions. 

6.3.1.1 F3396/F3396M—20 Standard Practice for Aircraft Simplified Loads. 

6.3.2 F3408/F3408M—21 Standard Specification for Aircraft 

Emergency Parachute Recovery Systems. 

23.2215 .................. 6.4 Flight Load Conditions ............................... 6.4.1 F3116/F3116M—18e2 Standard Specification for Design Loads 

and Conditions. 

6.4.1.1 F3396/F3396M—20 Standard Practice for Aircraft Simplified Loads. 

23.2220 .................. 6.5 Ground and Water Load Conditions .......... 6.5.1 F3116/F3116M—18e2 Standard Specification for Design Loads 

and Conditions. 

6.5.1.1 F3331—18 Standard Practice for Aircraft Water Loads. 

23.2225 .................. 6.6 Component Loading Conditions ................ 6.6.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.6.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

6.6.2 F3116/F3116M—18e2 Standard Specification for Design 

Loads and Conditions. 


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TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

6.6.2.1 F3396/F3396M—20 Standard Practice for Aircraft Simplified Loads. 

23.2230 .................. 6.7 Limit and Ultimate Loads ........................... 6.7.1 F3114—21 Standard Specification for Structures. 

6.7.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2235 .................. 6.8 Structural Strength ..................................... 6.8.1 F3114—21 Standard Specification for Structures. 

6.8.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2240 .................. 6.9 Structural Durability ................................... 6.9.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.9.2 F3066/F3066M –18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

6.9.3 F3115/F3115M—20 Standard Specification for Structural Durability for Small Aeroplanes. 

6.9.3.1 F3380 –19 Standard Practice for Structural Compliance 

of Very Light Aeroplanes. 

6.9.4 F3116/F3116M—18e2 Standard Specification for Design Loads 

and Conditions. 

23.2245 .................. 6.10 Aeroelasticity ............................................ 6.10.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.10.2 F3093/F3093M—21 Standard Specification for Aeroelasticity 

Requirements. 

23.2250 .................. 6.11 Design and Construction Principles ........ 6.11.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.11.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

6.11.2 F3114—21 Standard Specification for Structures. 

6.11.2.1 F3380—19 Standard Practice for Structural Compliance 

of Very Light Aeroplanes. 

6.11.3 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2255 .................. 6.12 Protection of Structure ............................. 6.12.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.12.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

6.12.2 F3114—21 Standard Specification for Structures. 

6.12.2.1 F3380—19 Standard Practice for Structural Compliance 

of Very Light Aeroplanes. 

6.12.3 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

6.12.4 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2260 .................. 6.13 Materials and Processes ......................... 6.13.1 F3114—21 Standard Specification for Structures. 

6.13.1.1 F3380—19 Standard Practice for Structural Compliance 

of Very Light Aeroplanes. 

6.13.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2265 .................. 6.14 Special Factors of Safety ........................ 6.14.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.14.2 F3114—21 Standard Specification for Structures. 

6.14.2.1 F3380 –19 Standard Practice for Structural Compliance of 

Very Light Aeroplanes. 

23.2270 .................. 6.15 Emergency Conditions ............................. 6.15.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

6.15.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

6.15.2 F3083/F3083M—20a Standard Specification for Emergency 

Conditions, Occupant Safety and Accommodations. 

6.15.3 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

Subpart D—Design and 

Construction 

23.2300 .................. 7.1 Flight Control Systems .............................. 7.1.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

7.1.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

7.1.2 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

7.1.3 F3117/F3117M—20 Standard Specification for Crew Interface. 


lotter on DSK11XQN23PROD with RULES1
13918 Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

23.2305 .................. 7.2 Landing Gear Systems .............................. 7.2.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

23.2310 .................. 7.3 Buoyancy for Seaplanes and Amphibians 7.3.1 F3061/F3061M—20 Standard Specification for Systems and

Equipment in Small Aircraft. 

23.2315 .................. 7.4 Means of Egress and Emergency Exits .... 7.4.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

7.4.2 F3083/F3083M—20a Standard Specification for Emergency 

Conditions, Occupant Safety and Accommodations. 

23.2320 .................. 7.5 Occupant Physical Environment ................ 7.5.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

7.5.1.1 F3227/F3227M—21 Standard Specification for Environmental Systems in Small Aircraft. 

7.5.2 F3083/F3083M—20a Standard Specification for Emergency 

Conditions, Occupant Safety and Accommodations. 

7.5.3 F3114—21 Standard Specification for Structures. 

7.5.4 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

23.2325 .................. 7.6 Fire Protection ........................................... 7.6.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

7.6.1.1 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

7.6.1.2 F3234/F3234M—17 Standard Specification for Exterior 

Lighting in Small Aircraft. 

7.6.1.3 F3316/F3316M—19 Standard Specification for Electrical 

Systems for Aircraft with Electric or Hybrid-Electric Propulsion. 

7.6.2 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

7.6.3 F3083/F3083M—20a Standard Specification for Emergency 

Conditions, Occupant Safety and Accommodations. 

7.6.4 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2330 .................. 7.7 Fire Protection in Designated Fire Zones 

and Adjacent Areas.

7.7.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

7.7.1.1 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

7.7.2 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

7.7.3 F3114—21 Standard Specification for Structures. 

23.2335 .................. 7.8 Lightning Protection ................................... 7.8.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

Subpart E—Powerplant: 

23.2400 .................. 8.1 Powerplant Installation ............................... 8.1.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.1.2 F3063/F3063M—20 Standard Specification for Aircraft Fuel and 

Energy Storage and Delivery. 

8.1.3 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

8.1.4 F3065/F3065M—21a Standard Specification for Aircraft Propeller System Installation. 

8.1.5 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.1.6 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2405 .................. 8.2 Power or Thrust Control Systems ............. 8.2.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.2.2 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

8.2.3 F3065/F3065M—21a Standard Specification for Aircraft Propeller System Installation. 

8.2.4 F3117/F3117M—20 Standard Specification for Crew Interface. 

23.2410 .................. 8.3 Powerplant Installation Hazard Assessment.8.3.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

8.3.2 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.3.3 F3063/F3063M—20 Standard Specification for Aircraft Fuel and 

Energy Storage and Delivery. 

8.3.4 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 


lotter on DSK11XQN23PROD with RULES1
Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 13919 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

8.3.5 F3065/F3065M—21a Standard Specification for Aircraft Propeller System Installation. 

8.3.6 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.3.7 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

8.3.8 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2415 .................. 8.4 Powerplant Installation Ice Protection ....... 8.4.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.4.2 F3063/F3063M—20 Standard Specification for Aircraft Fuel and 

Energy Storage and Delivery. 

8.4.3 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.4.4 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2420 .................. 8.5 Reversing Systems .................................... 8.5.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.5.2 F3065/F3065M—21a Standard Specification for Aircraft Propeller System Installation. 

8.5.3 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2425 .................. 8.6 Powerplant Operational Characteristics .... 8.6.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.6.2 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

8.6.3 F3065/F3065M—21a Standard Specification for Aircraft Propeller System Installation. 

8.6.4 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.6.5 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

8.6.6 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2430 .................. 8.7 Fuel and Energy Storage and Distribution 

Systems.

8.7.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.7.2 F3063/F3063M—20 Standard Specification for Aircraft Fuel and 

Energy Storage and Delivery. 

8.7.3 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

8.7.4 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.7.5 F3114—21 Standard Specification for Structures. 

8.7.6 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2435 .................. 8.8 Powerplant Induction, Exhaust, and Support Systems.8.8.1 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.8.2 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

23.2440 .................. 8.9 Powerplant Installation Fire Protection ...... 8.9.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

8.9.2 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

8.9.3 F3063/F3063M—20 Standard Specification for Aircraft Fuel an 

Energy Storage and Delivery. 

8.9.4 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

8.9.5 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

8.9.6 F3239—19 Standard Specification for Aircraft Electric Propulsion Systems. 

Subpart F—Equipment: 

23.2500 .................. 9.1 Systems and Equipment Function—Requirements.9.1.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.1.1.1 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

9.1.1.1(a) F3235—17a Standard Specification for Aircraft Storage Batteries. 


lotter on DSK11XQN23PROD with RULES1
13920 Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

9.1.1.2 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

9.1.1.3 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.1.1.3(a) F3229/F3229M—17 Standard Practice for Static Pressure System Tests in Small Aircraft. 

9.1.1.4 F3316/F3316M—19 Standard Specification for Electrical 

Systems for Aircraft with Electric or Hybrid-Electric Propulsion. 

9.1.2 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

9.1.3 F3066/F3066M—18 Standard Specification for Aircraft Powerplant Installation Hazard Mitigation. 

9.1.4 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

9.1.5 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

9.1.6 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2505 .................. 9.2 Equipment Function and Installation Requirements.9.2.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.2.1.1 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

9.2.1.1(a) F3235—17a Standard Specification for Aircraft Storage Batteries. 

9.2.1.2 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

9.2.1.3 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.2.1.4 F3316/F3316M—19 Standard Specification for Electrical 

Systems for Aircraft with Electric or Hybrid-Electric Propulsion. 

9.2.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2510 .................. 9.3 Equipment, Systems, and Installation ....... 9.3.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.3.1.1 F3230—20a Standard Practice for Safety Assessments 

of Systems and Equipment in Small Aircraft. 

9.3.1.2 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.3.1.3 F3227/F3227M—21 Standard Specification for Environmental Systems in Small Aircraft. 

9.3.1.4 F3309/F3309M—21 Standard Practice for Simplified 

Safety Assessment of Systems and Equipment in Small Aircraft. 

9.3.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2515 .................. 9.4 Electrical and Electronic System Lightning 

Protection.

9.4.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.4.1.1 F3367—21 Standard Practice for Simplified Methods for 

Addressing High-Intensity Radiated Fields (HIRF) and Indirect 

Effects of Lightning on Aircraft. 

23.2520 .................. 9.5 High Intensity Radiated Fields (HIRF) Protection.9.5.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.5.1.1 F3236—17 Standard Specification for High Intensity Radiated Field (HIRF) Protection in Small Aircraft. 

9.5.1.2 F3367—21 Standard Practice for Simplified Methods for 

Addressing High-Intensity Radiated Fields (HIRF) and Indirect 

Effects of Lightning on Aircraft. 

23.2525 .................. 9.6 System Power Generation, Storage, and 

Distribution.

9.6.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.6.1.1 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

9.6.1.1(a) F2490—20 Standard Guide for Aircraft Electrical Load 

and Power Source Capacity Analysis. 

9.6.1.2 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.6.1.3 F3316/F3316M—19 Standard Specification for Electrical 

Systems for Aircraft with Electric or Hybrid-Electric Propulsion. 


lotter on DSK11XQN23PROD with RULES1
Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 13921 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

9.6.1.3(a) F2490—20 Standard Guide for Aircraft Electrical Load 

and Power Source Capacity Analysis. 

9.6.2 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

9.6.3 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

23.2530 .................. 9.7 External and Cockpit Lighting .................... 9.7.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.7.1.1 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.7.1.2 F3234/F3234M—17 Standard Specification for Exterior 

Lighting in Small Aircraft. 

9.7.2 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

9.7.3 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

23.2535 .................. 9.8 Safety Equipment ...................................... 9.8.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.8.2 F3083/F3083M—20a Standard Specification for Emergency 

Conditions, Occupant Safety and Accommodations. 

9.8.3 F3117/F3117M—20 Standard Specification for Crew Interface. 

23.2540 .................. 9.9 Flight in Icing Conditions ........................... 9.9.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.9.1.1 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

9.9.2 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

23.2545 .................. 9.10 Pressurized System Elements ................. 9.10.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

9.10.2 F3229/F3229M—17 Standard Practice for Static Pressure 

System Tests in Small Aircraft. 

23.2550 .................. 9.11 Equipment Containing High-Energy Rotors.9.11.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

Subpart G—Flight crew 

Interface and Other 

Information: 

23.2600 .................. 10.1 Flight crew Compartment Interface ......... 10.1.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

10.1.1.1 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

10.1.2 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

10.1.3 F3063/F3063M—20 Standard Specification for Aircraft Fuel 

and Energy Storage and Delivery. 

10.1.4 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

10.1.5 F3114—21 Standard Specification for Structures. 

10.1.6 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

10.1.7 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2605 .................. 10.2 Installation and Operation Information .... 10.2.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

10.2.1.1 F3227/F3227M—21 Standard Specification for Environmental Systems in Small Aircraft. 

10.2.1.2 F3231/F3231M—21 Standard Specification for Electrical 

Systems for Aircraft with Combustion Engine Electrical Power 

Generation. 

10.2.1.3 F3232/F3232M—20 Standard Specification for Flight 

Controls in Small Aircraft. 

10.2.1.4 F3233/F3233M—21 Standard Specification for Instrumentation in Small Aircraft. 

10.2.2 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

10.2.3 F3063/F3063M—20 Standard Specification for Aircraft Fuel 

and Energy Storage and Delivery. 

10.2.4 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

10.2.5 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 


lotter on DSK11XQN23PROD with RULES1
13922 Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 

7The ASTM F3264–21 Section(s) provides a 

means of compliance intended to be used on 

projects for traditional part 23 airplanes, not for 

novel designs. Novel designs require evaluation and 

possible modification of the means of compliance. 

8The FAA does not accept the Aircraft Type Code 

compliance matrix tables included in F3061/ 

F3061M–20, F3227/F3227M–21, F3228–17, F3229/ 

F3229M–17, F3230–20a, F3231/F3231M–21, F3232/ 

F3232M–20, F3233/F3233M–21, F3234/F3234M– 

17, F3235–17a, F3236–17, and F3316/F3316M–19. 

Applicability will be determined by the Small 

Airplane Strategic Policy Section. 

TABLE 2—SIDE-BY-SIDE VIEW OF 14 CFR PART 23 REGULATIONS AND ASTM F3264–21 SECTIONS—Continued 

Part 23 

amendment 23–64 

regulation(s) 

ASTM F3264–21 section(s) 7 ASTM F3264–21 subsection(s) 8

10.2.6 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

10.2.7 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2610 .................. 10.3 Instrument Markings, Control Markings, 

and Placards:.

10.3.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

10.3.2 F3063/F3063M—20 Standard Specification for Aircraft Fuel 

and Energy Storage and Delivery. 

10.3.3 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

10.3.4 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

10.3.5 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

23.2615 .................. 10.4 Flight, Navigation, and Powerplant Instruments.10.4.1 F3061/F3061M—20 Standard Specification for Systems and 

Equipment in Small Aircraft. 

10.4.2 F3062/F3062M—20 Standard Specification for Aircraft Powerplant Installation. 

10.4.3 F3064/F3064M—21 Standard Specification for Aircraft Powerplant Control, Operation, and Indication. 

10.4.3.1 F3432—20a Standard Practice for Powerplant Instruments. 

10.4.4 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

23.2620 .................. 5.15 Operating Limitations ...............................

10.5 Airplane Flight Manual .............................

5.15.1 F3174/F3174M—19 Standard Specification for Establishing 

Operating Limitations and Information for Aeroplanes. 

5.15.2 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

10.5.1 F3117/F3117M—20 Standard Specification for Crew Interface 

in Aircraft. 

10.5.2 F3174/F3174M—19 Standard Specification for Establishing 

Operating Limitations and Information for Aeroplanes. 

10.5.3 F3120/F3120M—20 Standard Specification for Ice Protection 

for General Aviation Aircraft. 

10.5.4 F3408/F3408M—21 Standard Specification for Aircraft Emergency Parachute Recovery Systems. 

Editorial, Reapproval, Revision or 

Withdrawal 

ASTM policy is that a consensus 

standard should be reviewed in its 

entirety by the responsible 

subcommittee and must be balloted for 

reapproval, revision, or withdrawal, 

within five years of its last approval 

date. When an ASTM standard is 

reapproved, that reapproval is denoted 

by the year in parentheses (e.g., F2427– 

05a(2013)). 

This date indicates the completion of 

a review cycle with no technical 

changes made to the standard. ASTM 

issues editorial changes denoted by a 

superscript epsilon in the standard 

designation (e.g., F3235–17e1). This 

indicates information was corrected, 

and it did not change the meaning or 

intent of a standard. Any means of 

compliance accepted by this document, 

that is based on a standard later 

reapproved or editorially changed, is 

also considered accepted and without 

the need for a notice in the Federal 

Register. 

ASTM revises a standard to make 

changes to its technical content. 

Revisions to consensus standards 

serving as the basis for means of 

compliance accepted by this document, 

will not be automatically accepted, and 

will require further FAA acceptance in 

order for the revisions to be an accepted 

means of compliance. 

Availability 

ASTM International Standard 

Designation F3264–21, ‘‘Standard 

Specification for Normal Category 

Aeroplanes Certification,’’ is available 

for online reading at https://

www.astm.org/READINGLIBRARY/. 

ASTM copyrights these consensus 

standards, and charges the public a fee 

for service. Individual downloads or 

reprints of a standard (single or multiple 

copies, or special compilations and 

other related technical information) may 

be obtained through www.astm.org or 

contacting ASTM at (610) 832–9585 

(phone), (610) 832–9555 (fax), or 

through service@astm.org (email). To 

inquire about consensus standard 

content and/or membership or about 

ASTM Offices abroad, contact Joe 

Koury, Staff Manager for Committee F44 

on General Aviation Aircraft: (610) 832– 

9804, jkoury@astm.org. 

The FAA maintains a list of accepted 

means of compliance on the FAA 

website at https://www.faa.gov/aircraft/ 

air_cert/design_approvals/small_

airplanes/small_airplanes_regs/. 

Issued in Kansas City, Missouri, on March 

2, 2022. 


lotter on DSK11XQN23PROD with RULES1
Federal Register / Vol. 87, No. 48 / Friday, March 11, 2022 / Rules and Regulations 13923 

Patrick Mullen, 

Manager, Technical Innovation Policy 

Branch, Policy and Innovation Division, 

Aircraft Certification Service. 

[FR Doc. 2022–04845 Filed 3–10–22; 8:45 am] 

BILLING CODE 4910–13–P 

DEPARTMENT OF TRANSPORTATION 

Federal Aviation Administration 

14 CFR Part 39 

[Docket No. FAA–2021–0959; Project 

Identifier AD–2021–00830–E; Amendment 

39–21975; AD 2022–06–09] 

RIN 2120–AA64 

Airworthiness Directives; Pratt & 

Whitney Division Turbofan Engines 

AGENCY: Federal Aviation 

Administration (FAA), DOT. 

ACTION: Final rule. 

SUMMARY: The FAA is superseding 

Airworthiness Directive (AD) 2019–03– 

01 and AD 2021–05–51 for certain Pratt 

& Whitney Division (PW) PW4074, 

PW4074D, PW4077, PW4077D, 

PW4084D, PW4090, and PW4090–3 

model turbofan engines. AD 2019–03– 

01 required performing initial and 

repetitive thermal acoustic image (TAI) 

inspections for cracks in certain 1ststage low-pressure compressor (LPC) 

blades and removal of those blades that 

fail inspection. AD 2021–05–51 required 

performing a one-time TAI inspection 

for cracks in certain 1st-stage LPC 

blades and removal of those blades that 

fail inspection. This AD was prompted 

by three in-flight failures of a 1st-stage 

LPC blade, with one failure resulting in 

an engine fire during flight, and 

subsequent manufacturer publication of 

service information specifying improved 

inspections for three critical locations 

on the 1st-stage LPC blade. This AD 

requires initial and repetitive ultrasonic 

(UT) inspections and TAI inspections 

for cracks in certain 1st-stage LPC 

blades and removal of those blades that 

fail inspection. The FAA is issuing this 

AD to address the unsafe condition on 

these products. 

DATES: This AD is effective April 15, 

2022. 

The Director of the Federal Register 

approved the incorporation by reference 

of a certain publication listed in this AD 

as of April 15, 2022. 

ADDRESSES: For service information 

identified in this final rule, contact Pratt 

& Whitney Division, 400 Main Street, 

East Hartford, CT 06118; phone: (860) 

565–0140; email: help24@

prattwhitney.com; website: https://

connect.prattwhitney.com. You may 

view this service information at the 

FAA, Airworthiness Products Section, 

Operational Safety Branch, 1200 District 

Avenue, Burlington, MA 01803. For 

information on the availability of this 

material at the FAA, call (817) 222– 

5110. It is also available at https://

www.regulations.gov by searching for 

and locating Docket No. FAA–2021– 

0959. 

Examining the AD Docket 

You may examine the AD docket at 

https://www.regulations.govby 

searching for and locating Docket No. 

FAA–2021–0959; or in person at Docket 

Operations between 9 a.m. and 5 p.m., 

Monday through Friday, except Federal 

holidays. The AD docket contains this 

final rule, any comments received, and 

other information. The address for 

Docket Operations is U.S. Department of 

Transportation, Docket Operations, M– 

30, West Building Ground Floor, Room 

W12–140, 1200 New Jersey Avenue SE, 

Washington, DC 20590. 

FOR FURTHER INFORMATION CONTACT: 

Carol Nguyen, Aviation Safety Engineer, 

ECO Branch, FAA, 1200 District 

Avenue, Burlington, MA 01803; phone: 

(781) 238–7655; fax: (781) 238–7199; 

email: carol.nguyen@faa.gov. 

SUPPLEMENTARY INFORMATION: 

Background 

The FAA issued a notice of proposed 

rulemaking (NPRM) to amend 14 CFR 

part 39 to supersede AD 2019–03–01, 

Amendment 39–19553 (84 FR 4320, 

February 15, 2019) (AD 2019–03–01), 

and AD 2021–05–51, Amendment 39– 

21470 (86 FR 13445, March 9, 2021) (AD 

2021–05–51). AD 2019–03–01 and AD 

2021–05–51 applied to certain PW 

PW4074, PW4074D, PW4077, 

PW4077D, PW4084D, PW4090, and 

PW4090–3 model turbofan engines. The 

NPRM published in the Federal 

Register on December 28, 2021 (86 FR 

73699). The NPRM was prompted by the 

manufacturer developing an improved 

UT inspection for the three critical 

locations on the 1st-stage LPC blade, 

two at the mid span region of the blade 

and one at the flow path region of the 

blade, following three in-flight failures 

of a 1st-stage LPC blade, with one 

failure resulting in an engine fire during 

flight. The manufacturer published Pratt 

& Whitney Alert Service Bulletin (ASB) 

PW4G–112–A72–361, dated October 15, 

2021, which provides instructions for 

performing both the improved UT 

inspection and the TAI inspection. The 

manufacturer also determined that it 

was necessary to adjust the initial TAI 

inspection threshold and lower the 

repetitive TAI inspection interval on the 

1st-stage LPC blades to address the 

unsafe condition. In the NPRM, the FAA 

proposed to require initial and 

repetitive UT inspections and TAI 

inspections for cracks in certain 1ststage LPC blades and removal of those 

blades that fail inspection. 

Discussion of Final Airworthiness 

Directive 

Comments 

The FAA received comments from 

five commenters. The commenters were 

Air Line Pilots Association, 

International (ALPA), All Nippon 

Airways (ANA), The Boeing Company 

(Boeing), Japan Airlines (JAL), and 

United Airlines (UAL). The following 

presents the comments received on the 

NPRM and the FAA’s response to each 

comment. 

Request To Revise Note and Add 

Additional Note in Required Actions 

UAL requested that the FAA revise 

Note 2 to paragraph (g)(1)(ii) of the 

NPRM [Note 1 to paragraph (g)(1)(ii) of 

this AD] to ‘‘The FAA-approved TAI 

inspection method and the vendors that 

can perform the FAA-approved TAI 

inspection are specified in the 

Accomplishment Instructions section 

and Vendor Services section of PW4G– 

112–A72–361, respectively.’’ UAL also 

requested that the FAA add the same 

note to paragraph (g)(2)(iii) of this AD. 

The FAA agrees and revised Note 1 to 

paragraph (g)(1)(ii) of this AD and added 

Note 2 to paragraph (g)(2)(iii) to this AD, 

as requested by UAL. 

Request To Change the Initial 

Compliance Time to Before Revenue 

Flight 

ANA requested that the FAA change 

the Required Actions, paragraph (g)(1) 

Initial 1st-stage LPC Blade Inspections, 

from ‘‘before further flight after the 

effective of this AD’’ to ‘‘before the next 

revenue flight’’ to clarify the ferry flight 

requirement. 

Similarly, JAL requested the FAA 

change the Required Actions, paragraph 

(g)(1) Initial 1st-stage LPC Blade 

Inspections, from ‘‘before further flight 

after the effective of this AD’’ to ‘‘before 

the next revenue flight’’ or ‘‘before 

further flight except the ferry flight 

without passenger and cargos.’’ 

The FAA disagrees with changing the 

initial compliance in paragraph (g) of 

this AD as requested by ANA and JAL. 

The FAA has determined it is necessary 

to require certain actions prior to any 

flight, except as permitted in paragraph 

(i), Special Flight Permit, of this AD. 


lotter on DSK11XQN23PROD with RULES1