AIRWORTHINESS DIRECTIVE

 

CAA-AD-022/2001

 

Date of issue: March 14, 2001

 

AIRCRAFT - THROTTLE CONTROL LINKAGE (ATA 76) - INSPECTION/MODIFICATION

 

Applicability: AIRBUS INDUSTRIE A300, A310 and A300-600 aircraft, all certified models.

 

Effective date: April 19, 2001

 

Compliance: Required as indicated in DGAC AD 2001-072(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.: 2001-072(B)

AIRBUS INDUSTRIE

A300, A310 and A300-600 aircraft

 

Throttle control - Inspection and modifications (ATA 76)

 

1. APPLICABILITY:

 

AIRBUS INDUSTRIE A300, A310 and A300-600 aircraft, all certified models. The applicability of each action rendered mandatory is defined in paragraph 3 of this Airworthiness Directive (AD) and shown in the following summary table.

 

 

A300

A310

A300-600

Action No.1

x

 

 

Action No.2

x

x

 

Action No.3

 

x

 

Action No.4

x

x

x

Action No.5

 

x

x

Action No.6

 

x

x

Action No.7

 

x

x

 

2. REASONS:

 

Hard points in the throttle control linkage have been reported by operators.

 

If not corrected, this situation could lead to asymmetrical movements when the ATS (auto-throttle) is engaged and lead to difficulties in controlling the flight path it the condition of asymmetrical engine thrust is not corrected by the crew.

 

3. COMPLIANCE:

 

In order to prevent hard points during operation of the throttle control linkage, the following measures are rendered mandatory on the effective date of this AD.

 

3.1. Modifications

 

Action No.1:

applicable to A300 aircraft, all certified models equipped with G.E. engines, all serial numbers, which have not been supplied with AIRBUS INDUSTRIE modification (Mod.) 3758 in production or AIRBUS INDUSTRIE Service Bulletin (SB) A300-76-007, at the original issue or any later approved revision, in service.

 

- Before December 31, 2002, in each engine pylon, install flexible ice protection boots on the upper fittings of the throttle and HP fuel shut-off valve control cables, in accordance with the instructions of SB A300-76-007 R5.

 

Action No. 2:

applicable to A300 aircraft, all certified models and A310 aircraft of the -200 series, all serial numbers which have not been supplied with Mod. 4830 in production or SB A300-76-0015 or A310-76-2001, at the original issue or any later approved revision, in service.

 

- Before December 31, 2002, install a throttle control heating system in each engine pylon (common pylon), in accordance with the instructions of SBA300-76-0015 R1 or A3l0-76-2001 R1.

 

Action No. 3:

applicable to A310 aircraft equipped with G.E. engines, which have not been modified in accordance with SB A310-76-2004 at the original issue or any later approved revision.

 

- Before December 31, 2002, in each engine pylon, on the throttle control, install an elastomer sealing boot on the ball bearing of the flexible control, in accordance with the instructions of SB A310-76-2004 R2.

 

Action No. 4:

applicable to A300, A310 and A300-600 aircraft, all certified models, all serial numbers which have not been supplied with Mod. 6035 in production, or SB A300-76-0016 or A310-76-2005 or A300-76-6002 at the original issue or any later approved revision, in service.

 

- Before December 31, 2002, in each engine pylon replace the roller of the secondary relay of the throttle control by a new one in accordance with the instructions of SB A300-76-0016 R2 or A310-76-2005 R1 or A300-76-6002 R1.

 

Action No. 5:

applicable to A310 and A300 00 aircraft, all certified models equipped with G.E. CF6-80C2 engines, all serial numbers which have not been supplied with Mod. 8218 in production, or SB A310-76-2010 or A300-76-6007, at the original issue or any later approved revision, in service.

 

- Before December 31, 2002, install a cooling shroud on the cable of each throttle control unit, and connect the shroud to the ventilation duct of the HP compartment, in accordance with the instructions of SB A310-76-2010 R2 or A300-76-6007 R1.

 

Action No. 6:

applicable to A310 and A300-600 aircraft, all certified models equipped with G.E. CF6-80 engines all serial numbers which have not been supplied with Mod. 11061 in production or SB A310-76-2012 or A300-76-6009, at the original issue or any later approved revision, in service.

 

- Before December 31, 2002, in each engine pylon, install an elastomer plug filled with grease, at the end of the engine control cable, in accordance with the instructions of SB A310-76-2012 R1 or A300-76-6009 R1.

 

3.2. Inspection

 

The following inspection concerns AIRBUS INDUSTRIE A310 and A300-600 aircraft, all certified models equipped wilt PW JT9D-7R4 engines, which have not been supplied with Mod. 6567 in production or SB A310-76-2007 or A300-76-6004, at their original issue or any later approved revision, in service.

 

Time Compliance:

 

- At the latest within 500 flight hours following the effective date of this AD,

or

- within 2,000 flight hours following the last inspection.

 

Action No. 7:

 

a) In each engine pylon, inspect the push-pull cable of the throttle control and the rack-box connection, in accordance with the instructions of SB A310-76-2006 R2 or A300-76-6003 R3.

 

b) In view of the inspect on result, if necessary, replace either the push-pull cable, or the rack-box, or both, in accordance with the instructions of SB A310-76-2006 R2 or A300-76-6003 R3.

 

c) Repeat the inspection at intervals not exceeding 2,000 flight hours, even after replacement of the defective components.

 

Note:

no further inspection is required after application of SB A310-76-2007 R2 or A300-76-6004 R1.

 

REF.:

AIRBUS INDUSTRIE Service Bulletin A300-76-007 R5

AIRBUS INDUSTRIE Service Bulletin A300-76-0015 R1

AIRBUS INDUSTRIE Service Bulletin A300-76-0016 R2

AIRBUS INDUSTRIE Service Bulletin A310-76-2001 R1

AIRBUS INDUSTRIE Service Bulletin A310-76-2004 R2

AIRBUS INDUSTRIE Service Bulletin A310-76-2005 R1

AIRBUS INDUSTRIE Service Bulletin A310-76-2010 R2

AIRBUS INDUSTRIE Service Bulletin A310-76-2012 R1

AIRBUS INDUSTRIE Service Bulletin A310-76-2006 R2

AIRBUS INDUSTRIE Service Bulletin A310-76-2007 R2

AIRBUS INDUSTRIE Service Bulletin A300-76-6002 R1

AIRBUS INDUSTRIE Service Bulletin A300-76-6007 R2

AIRBUS INDUSTRIE Service Bulletin A300-76-6009 R2

AIRBUS INDUSTRIE Service Bulletin A300-76-6003 R3

AIRBUS INDUSTRIE Service Bulletin A300-76-6004 R1

Any later approved revision of these SBs is acceptable.

 

EFFECTIVE DATE: MARCH 03, 2001