COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 737 Series Aeroplanes
AD/B737/11 Horizontal Stabilizer Centre Section - Rear
Spar Upper Chord Attach Lugs
10/86
Applicability: All 737-100, -200 and -200C models with Line Numbers 316 to 322, and 325 and subsequent.
Requirement: Inspect in accordance with the Flight Safety Inspection Program specified in Boeing S.B. 737-55-1033.
Note: FAA AD 86-12-05 refers.
Compliance: (a) Before exceeding 40,000 landings; or
(b) Before exceeding 40,000 landings after a chord replacement or modification in accordance with Option 1 of the Requirement Document,
whichever is the later, and thereafter at intervals not exceeding 5,700 landings.
Background: Cracks in the lugs, if undetected, could lead to loss of the horizontal stabilizer.