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Airworthiness Directive

AD 2022-07-14 87 FR 20701 Active

Federal Aviation Administration · 14 CFR part 39

Requires repetitively inspecting the fuel gallery for corrosion, rectifying any deficiencies, and accomplishing modifications to the fuel gallery system.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
2022-07477
Amendment
39-22002
Published
2022-04-08
Effective
2022-05-13
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2022-07-14 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

2022-07-14

FR doc 2022-07477 · 87 FR 20701

AD 2022-07-14Published 2022-04-08Effective 2022-05-13

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 repetitively inspecting the fuel gallery for corrosion, rectifying any deficiencies, and accomplishing modifications to the fuel gallery system.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for certain Viking Air Limited (type certificate previously held by Bombardier Inc. and de Havilland, Inc.) Model DHC-6-400 airplanes. This AD was prompted by mandatory continuing airworthiness information (MCAI) originated by an aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition as corrosion of the fuel system components located in the fuel gallery due to inadequate corrosion protection. This AD requires repetitively inspecting the fuel gallery for corrosion, rectifying any deficiencies, and accomplishing modifications to the fuel gallery system. The FAA is issuing this AD to address the unsafe condition on these products.

More directives for de Havilland DHC-6 Twin Otter

  1. AD 2022-11-12 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-07-13
  2. AD 2022-11-09 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-07-06
  3. AD 2022-10-03 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-06-23
  4. AD 2022-10-07 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-06-23
  5. AD 2022-03-04 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-03-17

All de Havilland DHC-6 Twin Otter directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab) Print AD packet (opens the full Federal Register document in a new tab)

Applies to 1 model in our index