AD/CFM56/3 Amdt 1 - Number Three Bearing (Cth)

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

CFM International Turbine Engines - CFM56 Series

AD/CFM56/3 Amdt 1

Number Three Bearing 3/90 DM

Applicability: CFM56-3, -3B, -3C, -5 series engines.

Requirement: 1. Inspect the forward sump magnetic plug chip detector, for evidence of contamination, and

2. If contamination is evident on the forward sump magnetic plug chip detector, determine magnitude, source of contamination, and action in accordance with;

(a) Boeing CFM 737-300/400 Maintenance Manual D6-37588-388 Chapter 79- 00-00, Para 5, or

(b) Airbus A320 Aircraft Maintenance Manual Rev. 8 Chapter 79-21-10, or

(c) As agreed by the Authority.

Compliance:

1. Effective 7 February 1990, inspect at intervals not to exceed;

(a) CFM56-3, 3B, 3C series engines equipped with Number 3B bearings, part number 9732M1OP12 serial number series FAFDxxxx or FAFExxxx with less than 6000 hours bearing TSN; 50 hours time in service.

Note: P/N 9732M1OP12 bearings which have achieved 6000 hours TSN or greater are exempt from the inspection requirements of this Directive.

(b) CFM56-3, 3B, 3C series engines equipped with Number 3B bearings, part numbers 9732M1OP18 or 1362M76P02; 50 hours time in service.

(c) CFM56-3, 3B, 3C series engines equipped with Number 3B bearings, part numbers 9732M10P10; 9732M10P17; and 9732M10P12 serial number series other than FAFDxxxx or FAFExxxx, with less than 6000 hours bearing TSN; 75 hours time in service.

Note: P/N 9732M10P10, 9732M10P17 and 9732M10P12 bearings which have achieved 6000 hours TSN or greater are exempt from the inspection requirements of this Directive.