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Airworthiness Directive

AD 2016-20-01 81 FR 67102 Active

Federal Aviation Administration · 14 CFR part 39

FR document
2016-23345
Amendment
39-18667
Published
2016-09-30
Effective
2016-10-17
Models covered
2
Last live check
2026-09-30

Printed from https://aircraftdirectives.com/ad/2016-20-01 · 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

2016-20-01

FR doc 2016-23345 · 81 FR 67102

AD 2016-20-01Published 2016-09-30Effective 2016-10-17

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 replacing certain engine and transmission oil check valves.

Full official abstract

We are adopting a new airworthiness directive (AD) for Bell Model 427 and Model 429 helicopters. This AD requires replacing certain engine and transmission oil check valves. This AD also prohibits installing the affected check valves on any helicopter. This AD is prompted by a report of several cracked or leaking check valves. These actions are intended to detect and prevent a cracked or leaking check valve which could result in loss of lubrication to the engine or transmission, failure of the engine or transmission, and subsequent loss of control of the helicopter.

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All Bell 427 directives

View on Federal Register (opens in a new tab) View this AD in FAA DRS (opens in a new tab)

Applies to 2 models in our index