AD 85-24-01
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | DC-8-71 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8-70 Series Airplanes |
| aircraft | The Boeing Company | DC-8-72 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8-70 Series Airplanes |
| aircraft | The Boeing Company | DC-8-73 | Airworthiness Directives; MCDONNELL DOUGLAS DC-8-70 Series Airplanes |
Unsafe Condition
Potential APU exhaust door failures and resulting wiring and structural damage.
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Required Actions
Complete modifications defined in McDonnell Douglas DC-8-70 Service Bulletin 49-2 within six months after the effective date. Modifications include removal of the APU, modification of the APU module and control boxes, revision of the APU control system sensing and firex control wiring, replacement of three generator phase circuit breakers and APU control and fuel supply circuit breakers, inspection of wire routing, and reinstallation of the APU.
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Compliance Time
Within six (6) months after the effective date of this AD
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Affected Aircraft
McDonnell Douglas Model DC-8-70 series airplanes equipped with an auxiliary power unit in accordance with STC SA1387NM
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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