AD 59-04-01

final rule
Data completeness: 60%

Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft

AD Number
59-04-01
Status
final_rule
Effective Date
Product Category
aircraft
Docket
Unknown
FR Citation
This information is not available.

Applicability

TypeManufacturerModelDetails
aircraft Twin Commander Aircraft LLC 500 Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 560 Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 560-A Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 560-E Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 680 Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 680-E Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft
aircraft Twin Commander Aircraft LLC 720 Airworthiness Directives; Aero Commander Model 500, 560, 560A, 560E, 680, 680E, and 720 Aircraft

Unsafe Condition

Rivets have been inadvertently omitted from the rear spars of the vertical and horizontal stabilizers, specifically four web splice rivets on the vertical stabilizer rear spar and one or two of the three web splice rivets on each horizontal stabilizer rear spar.

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

Required Actions

Inspect to determine if rivets are missing. If missing, install four cherry rivets P/N CR163-5-4 on the vertical stabilizer and two on each horizontal stabilizer. Contact the Service Department for a spar web doubler if the spar web lap is insufficient.

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

Compliance Time

not later than March 31, 1959

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

Affected Aircraft

Twin Commander Aircraft LLC Models 500, 560, 560A, 560E, 680, 680E, and 720, Serial Numbers 151 Through 710 Inclusive.

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.

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