AIRWORTHINESS DIRECTIVE

CAA-AD-014/2002

Date of issue: January 23, 2002

ENGINE - LOW PRESSURE TURBINE NOZZLE SEGMENTS (ATA 72) - REPLACEMENT

Applicability: CFM56-5B and CFM56-7B engines that are equipped with stage 2 LP turbine nozzle segments references 338-109-104-0, 338-109-105-0, 338-109-106-0, 338-109-204-0, 338-109-205-0, 338-109-206-0, 338-109-304-0, 338-109-305-0, 338-109-306-0 and/or with stage 3 LP turbine nozzle segments references 338-109-702-0, 338-109-802-0.

Effective date: March 21, 2002

Compliance: Required as indicated in DGAC AD 2002-031(B).

Remarks: The compliance of this AD must be recorded in Aircraft Logbook, where applicable the requirements of this AD must be integrated into Aircraft Technical Documentation. Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyne Airport, 160 08 Prague 6, Czech Republic, tel.: 420 2 33320922, fax: 420 2 20562270.

Ing. Pavel MATOUŠEK

Director of Airworthiness Division

CAA CZ

DGAC AD No.: 2002-031(B)

CFM INTERNATIONAL

CFM56-5B and CFM56-7B turbofan engine

2 and 3 stage low pressure (LP) turbine nozzle segments (ATA 72)

1. APPLICABILITY:

CFM56-5B and CFM56-7B engines that are equipped with stage 2 LP turbine nozzle segments references 338-109-104-0, 338-109-105-0, 338-109-106-0, 338-109-204-0, 338-109-205-0, 338-109-206-0, 338-109-304-0, 338-109-305-0, 338-109-306-0 and/or with stage 3 LP turbine nozzle segments references 338-109-702-0, 338-109-802-0.

2. REASON:

In case of an over speed which would be caused by a PL turbine shaft failure, the turbine nozzle segment change imposed by this Airworthiness Directive limits the maximum speed that is attained by the LP turbine rotor, in order to remain within certification criteria.

3. MANDATORY ACTIONS - COMPLIANCE:

Not later than October 31, 2008, definitively retire from service stage 2 LP turbine nozzle segments references 338-109-104-0, 338-109-105-0, 338-109-106-0, 338-109-204-0, 338-109-205-0, 338-109-206-0, 338-109-304-0, 338-109-305-0, 338-109-306-0 and stage 3 LP turbine nozzle segments references 338-109-702-0, 338-109-802-0.

REF.: Service Bulletin CFMI No. CFM56-5B SB 72-0328 and

Service Bulletin CFMI No. CFM56-7B SB 72-0241.

EFFECTIVE DATE: JANUARY 19, 2002