Commonwealth legislation

AD/BELL 205/52 - Tail Rotor Trunnion Bearing Housing

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This AD requires owners/operators of Bell 205A and 205A‑1 helicopters fitted with kit P/N 212‑704‑129‑101 to perform recurring inspections and complete a mandated final corrective action per Bell Alert Service Bulletin 205‑86‑24 Revision A. It responds to a sub‑spec trunnion bearing housing end web that has caused excessive tail‑rotor vibration and loss of control. Operators must schedule and pay for inspections (short recurring intervals) until the final repair is done within the specified compliance window.

JSON API

Deep dive

Want the full deep dive?

Zoe can write the in-depth analysis on top of the summary above: how it works, who it affects and what each part actually does.

Current sections

Direct links to the current provisions in AD/BELL 205/52 - Tail Rotor Trunnion Bearing Housing.

AD/BELL 205/52 - Tail Rotor Trunnion Bearing Housing

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Bell Helicopter Textron 205 Series Helicopters

AD/BELL 205/52 Tail Rotor Trunnion Bearing Housing 9/86

Applicability: All model 205A and 205A-1 helicopters fitted with kit P/N 212-704-129-101 (refer SI 212-68).

Requirement: Action in accordance with Bell Alert Service Bulletin No. 205-86-24, Revision A. Compliance: Part I of the Requirement Document:

Within 25 hours time in service or seven days whichever occurs first after

6 August 1986 and thereafter at intervals not exceeding 25 hours time in service or 7 days, whichever occurs first, until Part II is complied with.

Part II of the Requirement Document:

Within 150 hours time in service or 60 days whichever occurs first after 31 July 1986.

Background: A trunnion bearing housing end web has been found below specified dimensions.

Failure of the housing caused excessive tail rotor vibration and loss of control.

Source text

Sourced from the Federal Register of Legislation (legislation.gov.au), CC BY 4.0.

1 AD/BELL 205/52 - Tail Rotor Trunnion Bearing Housing