COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
DHC-2 (Beaver) Series Aeroplanes
AD/DHC-2/24
Amdt 3
Wing Strut Assembly Lower Attachment Fittings 2/94
Applicability: All Models DHC-2 aircraft fitted with wing lift strut part numbers C2W1103, C2W1103A, C2W1104, or C2W1104A.
Requirement: Action in accordance with the Accomplishment Instructions of de Havilland of Canada Service Bulletin 2/41 Revision B. In lieu of the dye penetrant inspection specified in the above referenced service bulletin, a fluorescent penetrant inspection of the lower clevis fitting shall be carried out by a person holding a valid appropriate Non-Destructive Testing Authority.
Note: Transport Canada AD CF-85-08R3 refers.
Compliance: a. For aircraft operating in a salt water environment:
(i) For aircraft which have complied with Amendment 2 of this Directive, within one calendar year since the previous inspection, and thereafter at intervals not to exceed one calendar year; and
(ii) For aircraft which have not complied with Amendment 2 of this Directive, within 100 hours time in service or one calendar year after 3 February 1994, whichever occurs first, and thereafter at intervals not to exceed one calendar year.
b. For all other aircraft:
(i) For aircraft which have complied with Amendment 2 of this Directive, within two calendar years since the previous inspection, and thereafter at intervals not to exceed two calendar years; and
(ii) For aircraft which have not complied with Amendment 2 of this Directive, within 100 hours time in service or one calendar year after 3 February 1994, whichever occurs first, and thereafter at intervals not to exceed two calendar years.
Background: A report was received of stress corrosion cracking occurring in the wing lift strut lower clevis fitting. This Directive requires certain actions in order to preclude failure of the wing lift strut.
Amendment 1 expanded the part number applicability and removed the serial number range and date of manufacture provisions.
Amendment 2 replaced the dye penetrant inspection with the fluorescent penetrant inspection.
Amendment 3 is issued in response to a new Transport Canada AD revision which allows a longer inspection interval for aircraft which are not operated in a salt water environment.
COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES