AD 2013-16-25
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Bombardier | Various | Airworthiness Directives; Bombardier, Inc. Airplanes |
Unsafe Condition
Advance pneumatic detectors (APDs) for engine fire/overheat detector assemblies failing to reset after activation due to permanent deformation of the detector switch diaphragm after being exposed to high temperatures.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace all three APDs with new detector assemblies as specified in paragraphs (g)(1), (g)(2), and (g)(3) of the AD, in accordance with Bombardier Service Bulletins.
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Compliance Time
Within 6,000 flight hours or 30 months after the effective date of this AD, whichever occurs first.
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Affected Aircraft
Bombardier, Inc. Model DHC-8-400, -401, and -402 airplanes, certificated in any category, serial numbers (S/Ns) 4001 through 4399 inclusive.
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Source: Official FAA Source ↗
Retrieved: Apr 4, 2026
Rights: U.S. Government Public Domain
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