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Airworthiness Directive

AD 2007-20-02 72 FR 54535 Active

Federal Aviation Administration · 14 CFR part 39

FR document
E7-18863
Amendment
39-15212
Published
2007-09-26
Effective
2007-10-31
Models covered
1
Last live check
2026-10-02

Printed from https://aircraftdirectives.com/ad/2007-20-02 · 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

2007-20-02

FR doc E7-18863 · 72 FR 54535

AD 2007-20-02Published 2007-09-26Effective 2007-10-31

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 an inspection of certain SM-200 servo drive units (power servo motor and housing assemblies) for certain markings, related investigative action if necessary, and modification if necessary.

Full official abstract

The FAA is adopting a new airworthiness directive (AD) for all Viking Air Limited Model DHC-7 airplanes. This AD requires an inspection of certain SM-200 servo drive units (power servo motor and housing assemblies) for certain markings, related investigative action if necessary, and modification if necessary. This AD results from a report that some SM-200 servo drive units that were not in configuration MOD H are installed on Model DHC-7 airplanes. MOD H prevents the internal clutch fasteners from backing out. We are issuing this AD to prevent the possibility of internal clutch fasteners from backing out, which could cause an inadvertent servo engagement and consequent reduced controllability of the airplane.

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  4. AD 2006-12-04 Airworthiness Directives; Viking Air Limited Model DHC-7 Airplanes 2006-06-06
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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)

Applies to 1 model in our index