AD 91-12-17
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9A) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-32F (C-9B) | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-33F | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
| aircraft | The Boeing Company | DC-9-34F | Airworthiness Directives; McDONNELL DOUGLAS DC-9-15F, -32F, -33F, -34F, and C-9 (Military) Series Airplanes |
Unsafe Condition
Inadvertent opening of the forward upper cargo door in flight could result in loss of pressurization and reduced controllability of the aircraft.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Within four months after the effective date, perform magnetic particle inspections on cargo door latch spool fitting attach bolts or replace non-Inconel bolts with new bolts. If a bolt fails inspection, replace it before further flight. Replace all non-Inconel bolts with Inconel bolts within two years after the effective date.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within four months after the effective date of this AD, and thereafter at intervals not to exceed one year
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-9-15F, -32F, -33F, -34F, and C-9 (military) series airplanes, certificated in any category.
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.