AD 2001-10-11
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | McDonnell Douglas | MD-90-30 | Airworthiness Directives; McDonnell Douglas Model MD-90-30 Series Airplanes |
Unsafe Condition
Insulation blankets constructed of metallized Mylar™ in the area of the static port heater could propagate a small fire resulting from an electrical short of the static port heater, leading to a larger fire and smoke in the cabin.
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Required Actions
Inspect the wiring of the primary and alternate static port heaters for chafing, loose connections, and evidence of arcing. Determine the type of insulation blanket installed in the area of the static port heaters. If necessary, repair or replace the wiring, replace any metallized Mylar™ insulation blanket with a metallized Tedlar™ insulation blanket, or apply a DMS 1984 tape patch to the outboard side of the metallized Mylar™ insulation blanket. For metallized Mylar™ insulation blankets, additional options include cutting away the material and sealing the cutout or replacing it with an approved insulation blanket.
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Compliance Time
Within 3 months of the effective date
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Affected Aircraft
McDonnell Douglas Model MD-90-30 series airplanes
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Source: Official FAA Source ↗
Retrieved: Apr 6, 2026
Rights: U.S. Government Public Domain
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