AD 94-08-04
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS Model DC-9-10, -20, -30, -40, and -50 Series Airplanes and C-9 (Military) Airplanes; and DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), and DC-9-87 (MD-87) Series Airplanes and MD-88 Airplanes |
Unsafe Condition
Cracking in the skin and doublers around the upper anticollision light cutout could result in damage to the adjacent structure and subsequent loss of cabin structural integrity.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Perform stress coining procedures on plate nut clearance holes or install shims and an external doubler. Conduct eddy current inspections at intervals not exceeding 4,500 landings. Repair cracks as specified in service bulletins or approved methods.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
Prior to the accumulation of 75,000 total landings or within 4 years after September 24, 1990, whichever occurs later. For certain models, actions must be completed within 4,500 landings after the AD's effective date or before further flight if cracks are detected.
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
McDonnell Douglas Model DC-9-10, -20, -30, -40, -50 series airplanes and C-9 airplanes; DC-9-81, -82, -83, -87 series, and MD-88 airplanes with fuselage numbers 1 through 2042 inclusive.
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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