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Airworthiness Directive

AD 2004-21-06 69 FR 61758 Active

Federal Aviation Administration · 14 CFR part 39

Requires you to visually inspect the firewall connector plugs for proper lockwire security and replace or modify as appropriate.

Federal Register (opens in a new tab)

FR document
04-23365
Amendment
39-13827
Published
2004-10-21
Effective
2004-12-06
Models covered
2

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2004-21-06 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

This page is a reference Record, not an airworthiness or compliance determination. Official FAA and manufacturer sources control over our restatement, subject to governing law. Check applicability, current requirements and incorporated documents before acting. The owner or operator remains responsible for airworthiness and required records under 14 CFR 91.403 and 91.417, as applicable. Terms of Use: /terms.

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AD

2004-21-06

FR doc 04-23365 · 69 FR 61758

AD 2004-21-06Published 2004-10-21Effective 2004-12-06

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 you to visually inspect the firewall connector plugs for proper lockwire security and replace or modify as appropriate.

Full official abstract

The FAA adopts a new airworthiness directive (AD) for all deHavilland Inc. Models DHC-2 Mk. I and DHC-2 Mk. II airplanes and for all Bombardier Inc. Model (Otter) DHC-3 airplanes powered by radial engines. This AD requires you to visually inspect the firewall connector plugs for proper lockwire security and replace or modify as appropriate. This AD is the result of mandatory continuing airworthiness information (MCAI) issued by the airworthiness authority for Canada. We are issuing this AD to prevent loss of ignition systems during flight caused by improper lockwire security, which could result in engine failure. This failure could lead to a forced landing of the airplane.

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All de Havilland DHC-2 Beaver directives

View on Federal Register (opens in a new tab) Search DRS manually for AD 2004-21-06 (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 2 models in our index