AircraftDirectives
Airworthiness Directive

AD 2017-20-07 82 FR 45703

Federal Aviation Administration · 14 CFR part 39

FR document
2017-20824
Amendment
39-19064
Published
2017-10-02
Models covered
1
Last live check
2026-08-17

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AD

2017-20-07

FR doc 2017-20824 · 82 FR 45703

AD 2017-20-07Published 2017-10-02Effective 2017-11-06

Requires replacing certain circuit breakers.

Full official abstract

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-400 series airplanes. This AD was prompted by the failure of the fire control amplifier (FCA), which was likely caused by an electrical short in a discharged squib for a fire extinguishing bottle. This AD requires replacing certain circuit breakers. We are issuing this AD to address the unsafe condition on these products.

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Applies to 1 model in our index