Commonwealth legislation

AD/F27/135 - Nose Wheel Steering

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Commonwealth

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legislative instrument

Plain English Summary

3/10 complexity

Mandates owners/operators of Fokker F27s fitted with Walter Kidde nose‑wheel steering gearbox P/N 893954 (except MK 050) to carry out the work specified in Fokker SB F27/32‑166 within 500 flight hours of 1 Dec 1993 or by 1 Feb 1994, then recheck bolt torque at every B‑check. It addresses broken dowel pins that can cause loss of directional control or nose‑gear collapse; operators pay the inspection/repair costs and face the associated downtime.

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AD/F27/135 - Nose Wheel Steering

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Fokker F27 Series Aeroplanes

AD/F27/135 Nose Wheel Steering 13/93

Applicability: All F27 aircraft (except MK 050) series fitted with Walter Kidde Nose-wheel Steering System (steering unit gearbox housing assembly) P/N 893954.

Requirement: Unless previously carried out, action in accordance with Fokker SB F27/32-166 dated 7 September 1993.

Note: BLA AD 93-132 (A) and Fokker F27 Maintenance Circular No 32-6 refers.

Compliance: Within 500 hours time in service from 1 December 1993 or by 1 February 1994, whichever occurs first.

Thereafter, recheck the bolt torque value at each B-check.

Background: The manufacturer has been advised of broken dowels pins in the Walter Kidde nose- wheel steering system. This has resulted in loss of directional control after touch down and in some cases the subsequent collapse of the nose gear.

Source text

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

1 AD/F27/135 - Nose Wheel Steering