COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Fokker F27 Series Aeroplanes
AD/F27/147 Fuselage Attachment Fittings 10/99
Applicability: Model F27 Mk. 100 through Mk. 700 (except Mk. 500RF), serial numbers 10102 and 10105 through 10582.
Requirement: Inspect the wing-to-fuselage fittings in accordance with the Accomplishment Instructions of STORK Fokker Service Bulletin F27/57-77.
Note: RLD AD 1999-053 refers.
Compliance: Before 7 December 1999, unless already accomplished.
This Airworthiness Directive becomes effective on 7 October 1999.
Background: The RLD received a report of a cracked wing-to-fuselage attachment fitting. An investigation revealed that the cracking had resulted from stress corrosion cracking. The subject fittings are manufactured from 7079-T6 aluminium, which is known to be sensitive to this type of corrosion.