AD 91-07-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | 727-100 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-100C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727-200F Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727 Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
| aircraft | The Boeing Company | 727C Series | Airworthiness Directives; BOEING Model 727 Series Airplanes |
Unsafe Condition
Failure of the No. 2 cargo doorway frames and depressurization of the airplane.
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Required Actions
Conduct a visual inspection and an eddy current inspection of the No. 2 cargo doorway forward and aft frames for cracks. Repeat inspections at intervals not exceeding 3,000 flight cycles. If cracks are found, repair in accordance with specified service bulletins. Incorporation of repairs or modifications per service bulletins terminates inspection requirements.
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Compliance Time
Prior to accumulating 22,000 total flight cycles or within the next 500 flight cycles after the effective date of this AD, whichever occurs later.
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Affected Aircraft
Boeing Model 727 series airplanes listed in Boeing Alert Service Bulletin 727-53A0199 dated July 5, 1990, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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