AD/CFM56/19 - Torque Fittings of PS3 Pressure Line (Cth)

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39-106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES

AIRWORTHINESS DIRECTIVE

For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

CFM International Turbine Engines - CFM56 Series

AD/CFM56/19 Torque Fittings of PS3 Pressure Line 5/2002 DM

Applicability: CFM International (CFMI) Model CFM56-7B Turbofan Engines except those with Serial Numbers DAC 876-747 and higher, and SAC 888-XXX and 889-XXX: 166- 168, 172-173, 175-178, 180 and higher. These engines are installed on, but not limited to, Boeing 737-8BK and 737-7Q8 aeroplanes.

Requirement: Carry out the technical requirements of FAA AD 2001-02-12 amendment 39-12097. Compliance: Within 25 days after the effective date of this Airworthiness Directive. This Airworthiness Directive becomes effective on 10 April 2002.

Background: FAA AD 2001-02-12 indicates that affected engines may have PS3 pressure line fittings that are incorrectly torque loaded. This Directive therefore requires actions contained in the FAA AD to be followed to ensure the fittings on the PS3 pressure line are correctly torque loaded to prevent the possibility of engine power loss.