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Airworthiness Directive

AD 2022-21-51 87 FR 68624 Active

Federal Aviation Administration · 14 CFR part 39

Requires repetitive detailed visual inspections of the entire left-hand elevator auxiliary spar for cracks, corrosion, and previous repairs, and depending on the findings, replacement of the left-hand elevator auxiliary spar.

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FR document
2022-25046
Amendment
39-22240
Published
2022-11-16
Effective
2022-12-01
Models covered
1

Last live check: 2026-08-19

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AD

2022-21-51

FR doc 2022-25046 · 87 FR 68624

AD 2022-21-51Published 2022-11-16Effective 2022-12-01

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 repetitive detailed visual inspections of the entire left-hand elevator auxiliary spar for cracks, corrosion, and previous repairs, and depending on the findings, replacement of the left-hand elevator auxiliary spar.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for all Viking Air Limited (type certificate previously held by Bombardier Inc. and de Havilland, Inc.) Model DHC-3 airplanes. This AD was prompted by multiple recent reports of cracks in the left-hand elevator auxiliary spar. This AD requires repetitive detailed visual inspections of the entire left-hand elevator auxiliary spar for cracks, corrosion, and previous repairs, and depending on the findings, replacement of the left-hand elevator auxiliary spar. This AD also requires sending the inspection results to the FAA. The FAA previously sent an emergency AD to all known U.S. owners and operators of these airplanes and is now issuing this AD to address the unsafe condition on these products.

More directives for de Havilland DHC-3 Otter

  1. AD 2025-17-08 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2025-09-29
  2. AD 2023-22-17 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2024-01-19
  3. AD 2023-18-03 Airworthiness Directives; Viking Air Limited (Type Certificated Previous... Effective 2023-10-24
  4. AD 2022-23-08 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-11-02
  5. AD 2022-05-11 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2022-04-13

All de Havilland DHC-3 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