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Airworthiness Directive

AD 2012-11-05 77 FR 36131 Active

Federal Aviation Administration · 14 CFR part 39

FR document
2012-14634
Amendment
39-17068
Published
2012-06-18
Effective
2012-07-03
Models covered
1
Last live check
2026-09-30

Printed from https://aircraftdirectives.com/ad/2012-11-05 · 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

2012-11-05

FR doc 2012-14634 · 77 FR 36131

AD 2012-11-05Published 2012-06-18Effective 2012-07-03

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.

Corrects: This AD is prompted by the discovery that another part- numbered trim relay, inadvertently omitted from the current AD, may contain the same unsafe condition.

Full official abstract

We are superseding an existing airworthiness directive (AD) for Enstrom Helicopter Corporation (Enstrom) Model F-28C, F-28C-2, F- 28F, 280C, 280F, 280FX, TH-28, 480, and 480B helicopters to add another trim relay to the applicability and to revise the modification instructions. This AD is prompted by the discovery that another part- numbered trim relay, inadvertently omitted from the current AD, may contain the same unsafe condition. These actions are intended to prevent failure of the cyclic trim system and subsequent loss of control of the helicopter.

More directives for Enstrom F-28 / 280 / 480

  1. AD 2018-02-01 Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters 2018-01-17
  2. AD 2017-26-03 Airworthiness Directives; The Enstrom Helicopter Corporation Helicopters 2017-12-20
  3. AD 2015-08-51 Airworthiness Directives; The Enstrom Helicopter Corporation 2015-05-18
  4. AD 2011-26-10 Airworthiness Directives; Enstrom Helicopter Corporation Helicopters 2012-01-06
  5. AD 2007-11-02 Airworthiness Directives; Enstrom Helicopter Corporation Model F-28A, F-... 2007-08-28

All Enstrom F-28 / 280 / 480 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