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Airworthiness Directive

AD 97-18-11 63 FR 26429 Active

Federal Aviation Administration · 14 CFR part 39

Requires modification and inspections of the vertical fin spar.

Federal Register (opens in a new tab)

FR document
98-12508
Amendment
39-10520
Published
1998-05-13
Effective
1998-05-28
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/97-18-11 · 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

97-18-11

FR doc 98-12508 · 63 FR 26429

AD 97-18-11Published 1998-05-13Effective 1998-05-28

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 modification and inspections of the vertical fin spar.

Full official abstract

This document publishes in the Federal Register an amendment adopting Airworthiness Directive (AD) 97-18-11, issued on August 29, 1997, which was sent previously to all known U.S. owners and operators of Bell Model 204B, 205A, and 205A-1 helicopters by individual letters. This AD requires modification and inspections of the vertical fin spar. If any crack is discovered, replacement of the vertical fin spar with an airworthy vertical fin spar is required before further flight. This amendment is prompted by several failures of the vertical fin spar, including those with steel doublers, caused by fatigue cracks that result from a large number of high-power events. The actions specified by this AD are intended to prevent in-flight failure of the vertical fin spar and subsequent loss of control of the helicopter.

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All Bell 205 / 212 directives

View on Federal Register (opens in a new tab) Search DRS manually for AD 97-18-11 (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