AD 67-27-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-9-11 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-12 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-13 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-14 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-15 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-15F | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-21 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-31 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-32 | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
| aircraft | The Boeing Company | DC-9-32 (VC-9C) | Airworthiness Directives; MCDONNELL DOUGLAS DC-9 Series Airplanes |
Unsafe Condition
A missing bolt in the area where the engine aft mount attaches to the spar cap of the pylon rear spar, attributed to the absence of a bolt hole in the clip located on the aft side of the pylon rear spar.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the outboard end of the upper and lower spar cap of each pylon rear spar near the first fastener inboard of the holes for the rear engine mount. Replace any missing bolt (P/N MS 21250-05010) or nut (P/N H16-5) before further flight. Report missing bolts or nuts to the FAA within three days of discovery.
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Compliance Time
Prior to the next departure from a maintenance base where the inspection can be accomplished by the operator but not later than 5 hours' time in service after September 26, 1967, unless already accomplished per Douglas Alert Service Bulletin No. A54-15 or wire dated September 11, 1967, or later FAA-approved revision.
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Affected Aircraft
MCDONNELL DOUGLAS DC-9 Series airplanes delivered prior to September 8, 1967, including models DC-9-11, DC-9-12, DC-9-13, DC-9-14, DC-9-15, DC-9-15F, DC-9-21, DC-9-31, DC-9-32, and others as listed.
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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