AD 89-08-10 R1
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; McDONNELL DOUGLAS DC-9 and C-9 (Military) Series, DC-9-80 Series and MD-88 Airplanes, |
Unsafe Condition
Structural failure of the empennage section due to cracks in the upper fuselage skin adjacent to specific fuselage stations and cracks in the dorsal fin attach angles.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Conduct visual inspections for cracks in the upper fuselage skin and dorsal fin attach angles, perform interim modifications per Service Sketches 3413J and 3414D, and replace or modify attach angles per ASB53-223. Inspections and modifications must be completed within specified landing intervals, with compliance deadlines based on aircraft model and landing counts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Within specified landing intervals (e.g., 100 landings after May 17, 1982; prior to 4,000 landings from May 17, 1982) depending on model and landing counts.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas DC-9 and C-9 (Military) series, DC-9-80 series, and MD-88 airplanes, including all fuselage numbers as specified in the AD.
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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