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Airworthiness Directive

AD 2015-20-06 80 FR 60284 Active

Federal Aviation Administration · 14 CFR part 39

Requires a one-time detailed visual inspection for cracking in the outboard nacelles upper longeron channels and angles; and repair if necessary.

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FR document
2015-25218
Amendment
39-18285
Published
2015-10-06
Effective
2015-11-10
Models covered
1

Last live check: 2026-08-19

Printed from https://aircraftdirectives.com/ad/2015-20-06 · AircraftDirectives restates official FAA and manufacturer records; the official sources named on this sheet control. Not an airworthiness determination.

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AD

2015-20-06

FR doc 2015-25218 · 80 FR 60284

AD 2015-20-06Published 2015-10-06Effective 2015-11-10

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 a one-time detailed visual inspection for cracking in the outboard nacelles upper longeron channels and angles; and repair if necessary.

Full official abstract

We are adopting a new airworthiness directive (AD) for all Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc.) Model DHC-7-1 and DHC-7-100 airplanes. This AD was prompted by reports of cracks that were discovered in the outboard nacelles upper longeron channels and angles. This AD requires a one-time detailed visual inspection for cracking in the outboard nacelles upper longeron channels and angles; and repair if necessary. We are issuing this AD to detect and correct cracks in the outboard nacelles upper longeron channels and angles, which could lead to the loss of stiffness in the forward engine mount; and possible catastrophic failure.

More directives for de Havilland DHC-7 Dash 7

  1. AD 2010-23-21 Airworthiness Directives; Viking Air Limited (Type Certificate Previousl... Effective 2010-12-22
  2. AD 2009-06-03 Airworthiness Directives; Viking Air Limited Model DHC-7 Airplanes Effective 2009-04-20
  3. AD 2007-20-02 Airworthiness Directives; Viking Air Limited Model DHC-7 Airplanes Effective 2007-10-31
  4. AD 2006-12-04 Airworthiness Directives; Viking Air Limited Model DHC-7 Airplanes Effective 2006-06-21
  5. AD 2006-11-02 Airworthiness Directives; Viking Air Limited Model DHC-7 Airplanes Effective 2006-06-27

All de Havilland DHC-7 Dash 7 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