AD 74-20-12
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Twin Commander Aircraft LLC | 690A | Airworthiness Directives; Commander Aircraft Division, Rockwell International Model 690A Series Airplanes |
Unsafe Condition
Cracks in the cutout around the openable pilot's and co-pilot's side windows could result in structural failure of the window assembly.
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Required Actions
Before first flight each day after the effective date, check the cutout for cracks. If cracks are found, replace openable side windows with non-openable P/N 360012-501 before further flight (except unpressurized flights to a base for repair). Within 50 hours' time in service, replace all openable side windows with P/N 360012-501 per Service Bulletin 143 or approved method.
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Compliance Time
Before first flight each day after the effective date; within 50 hours' time in service after the effective date.
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Affected Aircraft
Commander Aircraft Division, Rockwell International Model 690A series airplanes, serial numbers 11100 through 11197.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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