COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Boeing 737 Series Aeroplanes
AD/B737/30
Amdt 2
Engine Throttle Cable 1/92
Model 737-300, -400 and -500 series, listed in Boeing SB 737-76-1023.
Action in accordance with the technical requirement of FAA AD 91-21-13 Amdt 39- 8060.
Boeing SB 737-76-1023 refers.
As specified in the requirement document with a revised effective date of 12 January 1992 for Australian registered aircraft.
Interference between the number two engine throttle cable and the adjacent right wing front spar bracket near station 124, has resulted in one throttle cable failure and a significant number of worn or frayed cables. This AD introduced an increased frequency inspection period until planned modification action by the manufacturer was available.
Amendment 1 was raised to include the 400 series aeroplane which was the subject of a new country of origin AD.
Amendment 2 to this Directive requires terminating action in lieu of repetitive inspections of the cable. The manufacturer has developed a modification which will eliminate the cable’s accelerated wear condition, and a condition referred to as “engine throttle cable ratcheting” which exists on each engine. The effective date required by the FAA is extended by approximately one month.