AD 75-16-03
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series, C-9A, C-9B, and VC-9C Airplanes |
Unsafe Condition
Accumulation of liquids and formation of ice in the nose landing gear emergency uplock release mechanism pressure can (P/N 9910073-87) may restrict operation of the nose landing gear manual release system.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Permanently remove the pressure can drain plug (P/N 1103-1), inspect for and drain any liquid, and modify the pressure can per Douglas Service Bulletin 53-91 within 1600 hours time in service. Daily drain hole checks or drilling a .190/.194 diameter hole and 100-hour inspections are required until the modification is completed.
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Compliance Time
Within 12 flight hours time in service after the effective date of this AD, and within the next 1600 hours time in service after the effective date for the modification.
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Affected Aircraft
All Model DC-9 Series airplanes, including Military C-9A, C-9B, and VC-9C, certificated in all categories.
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
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