Commonwealth legislation

AD/F28/49 - Wing Butt Straps and Boundary-Layer Fences

In ForceCTH

Jurisdiction

Commonwealth

Collection

legislative instrument

Plain English Summary

3/10 complexity

This directive obliges owners/operators of specified Fokker F28 airframes (listed serial numbers) to inspect and correct wing butt straps and boundary‑layer fences per Fokker Service Bulletin F28/57‑70, to be completed by 31 December 1985. It addresses air leakage that can impair wing aerodynamics; technical repair details and implementation choices are delegated to the referenced service bulletin and the operator/maintenance provider.

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AD/F28/49 - Wing Butt Straps and Boundary-Layer Fences

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

View image in the official source Fokker F28 Series Aeroplanes

AD/F28/49 Wing Butt Straps and Boundary-Layer Fences 9/85

Applicability: All model F28 with S/Nos 11092, 11093, 11111 to 11203 and 11205 to 11231. Requirement: Fokker SB F28/57-70.

Note: Netherlands AD 85-44 refers.

Compliance: Prior to 31 December 1985.

Air-leakage through butt straps and boundary layer fences has an adverse effect on the aerodynamic behaviour of the wings.

Source text

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