Commonwealth legislation

AD/B737/106 - Aileron Centring Spring and Trim Mechanism

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

4/10 complexity

The Civil Aviation Safety Authority mandates that owners/operators of the Boeing 737 models listed in Boeing Service Bulletin 737-27-1155 (and its Notices of Status Change) must carry out the technical actions specified in FAA AD 97-04-01 to prevent aileron-control jamming from fractured centring springs. Work must be completed by 21 September 1998; technical details and affected serials are in the referenced FAA AD and Boeing service bulletin, and compliance costs fall to the aircraft owners/operators.

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/B737/106 - Aileron Centring Spring and Trim Mechanism.

AD/B737/106 - Aileron Centring Spring and Trim Mechanism

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source
Boeing 737 Series Aeroplanes

AD/B737/106 Aileron Centring Spring and Trim Mechanism 6/97

Applicability: Model 737 series aircraft; as listed in Boeing Service Bulletin 737-27-1155, dated October 26, 1989; as revised by Notices of Status Change No. 737-27-1155NSC1, dated January 25, 1990, No. 737-27-1155NSC2, dated February 15, 1990, and No.

737-27-1155NSC3, dated May 17, 1990.

Requirement: Action in accordance with the technical requirements of FAA AD 97-04-01 Amdt 39- 9925.

Compliance: Before 21 September 1998.

This Airworthiness Directive becomes effective on 22 May 1997.

Background: This Directive is prompted as a result of findings by the Critical Design Review team of the design of the flight control systems on Model 737 series aircraft. The actions specified by this Directive are intended to prevent jamming of the aileron control system during flight due to fracturing of the springs in the aileron centring units.

Source text

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

1 AD/B737/106 - Aileron Centring Spring and Trim Mechanism