AD 91-21-03
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
Arcing, burning, or chafing of electrical wiring along the left and right overhead stowage compartment rail assemblies in the vicinity of each electrical bonding strap could lead to fire and smoke in the passenger cabin.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Visually inspect the electrical wiring along the overhead stowage compartment rail assemblies for damage, repair if necessary before further flight, modify the electrical bonding strap installation per Heath Tecna Alert Service Bulletin ESCI-25-A1, and comply with the service bulletin for modification requirements.
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Compliance Time
within 18 months after the effective date of this AD, unless previously accomplished
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Affected Aircraft
MCDONNELL DOUGLAS DC-9 series airplanes listed in Heath Tecna Service Bulletin ESCI-25-A1, dated April 30, 1990, certificated in any category.
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Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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