Airworthiness Directive

AD 2012-06-05 77 FR 16919 Active

Federal Aviation Administration · 14 CFR part 39

FR document
2012-6530
Amendment
39-16986
Published
2012-03-23
Effective
2012-04-27
Models covered
1
Last live check
2026-10-03
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AD

2012-06-05

FR doc 2012-6530 · 77 FR 16919

AD 2012-06-05Published 2012-03-23Effective 2012-04-27

FAA rule - 14 CFR 39

FAA rule. Compliance with an applicable AD is required under 14 CFR 39.7. Check its effective date, applicability, compliance times and current status.

Requires changing the wiring that controls the pneumatic shut-off valve.

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 a report of the inability to open the airstair door while on the ground, because the airstair door seal did not deflate, which prevented the airstair door from opening. This AD requires changing the wiring that controls the pneumatic shut-off valve. We are issuing this AD to prevent the airstair door seal from not deflating, which could result in the airstair door not opening and could impede evacuation in the event of an emergency.

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Applies to 1 model in our index