AircraftDirectives
MembershipSign inCreate free account
Menu
Airworthiness Directive

AD 2003-04-12 68 FR 9523 Active

Federal Aviation Administration · 14 CFR part 39

Requires modifying the auxiliary fin assemblies and revising the Limitations section of the Rotorcraft Flight Manual (RFM) to reduce the never-exceed speed (Vne) for a tail rotor pedal stop failure.

Federal Register (opens in a new tab)FAA DRS (opens in a new tab)

FR document
03-4477
Amendment
39-13061
Published
2003-02-28
Effective
2003-04-04
Models covered
1

Last live check: 2026-10-04

Printed from https://aircraftdirectives.com/ad/2003-04-12 · 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.

Opens your browser's print dialog. Choose “Save as PDF” to export a file. Keyboard: Ctrl+P or Cmd+P.

AD

2003-04-12

FR doc 03-4477 · 68 FR 9523

AD 2003-04-12Published 2003-02-28Effective 2003-04-04

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 modifying the auxiliary fin assemblies and revising the Limitations section of the Rotorcraft Flight Manual (RFM) to reduce the never-exceed speed (Vne) for a tail rotor pedal stop failure.

Full official abstract

This amendment adopts a new airworthiness directive (AD) for the specified Bell Helicopter Textron Canada (Bell) model helicopters that requires modifying the auxiliary fin assemblies and revising the Limitations section of the Rotorcraft Flight Manual (RFM) to reduce the never-exceed speed (Vne) for a tail rotor pedal stop failure. This amendment is prompted by several incidents of main rotor blades contacting the top of the fin that have resulted in an upper tuning weight (weight) becoming loose. The actions specified by this AD are intended to prevent a main rotor blade from striking an auxiliary fin, loss of a tuning weight, impact with a tail or main rotor blade, and subsequent loss of control of the helicopter.

More directives for Bell 427

  1. AD 2025-25-01 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2026-01-16
  2. AD 2025-13-01 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2025-07-08
  3. AD 2021-19-01 Airworthiness Directives; Bell Textron Canada Limited Helicopters Effective 2021-10-13
  4. AD 2019-23-09 Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicop... Effective 2020-01-10
  5. AD 2016-20-01 Airworthiness Directives; Bell Helicopter Textron Canada Limited (Bell) ... Effective 2016-10-17

All Bell 427 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