AD 64-02-01

final rule
Data completeness: 70%

Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft

AD Number
64-02-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
Federal Register: January 21, 1964

Applicability

TypeManufacturerModelDetails
aircraft Twin Commander Aircraft LLC 500-A Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft
aircraft Twin Commander Aircraft LLC 500-B Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft
aircraft Twin Commander Aircraft LLC 560-F Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft
aircraft Twin Commander Aircraft LLC 680-FL Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft
aircraft Twin Commander Aircraft LLC 680-F(P) Airworthiness Directives; Aero Commander Model 500A, 500B, 560F, 680F and 680FL Aircraft

Unsafe Condition

Loosened set screws and rotation of the upper retaining bearing on the main landing gear could cause gear extension exceeding 9.125±0.125 inches, leading to structural failure.

AI-generated summary from the source AD text. Verify against the official source before acting.

Required Actions

Within 25 hours' time in service after the effective date, inspect the main landing gear per Service Bulletin No. 83 Part I. If extension exceeds tolerance, modify both gears per Part II within 50 hours' time in service and stamp 'A' on data plates.

AI-generated summary from the source AD text. Verify against the official source before acting.

Compliance Time

Within 25 hours' time in service after the effective date (inspection) and within 50 hours' time in service after the effective date (modification)

AI-generated summary from the source AD text. Verify against the official source before acting.

Affected Aircraft

Aero Commander Models 500A, 500B, 560F, 680F, 680FL with serial numbers 871, 875, and 893 through 1329 excluding 916, 953, 1162, 1186, 1207, 1224, 1234, 1293, 1303, 1325, 1327, and 1328.

AI-generated summary from the source AD text. Verify against the official source before acting.

Source: Official FAA Source ↗

Retrieved: Apr 8, 2026

Rights: U.S. Government Public Domain

This site is not affiliated with or endorsed by the FAA. Always verify with official sources.

View Official Source ↗ Find More ADs for Twin Commander Aircraft LLC 500-A

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