AIRWORTHINESS DIRECTIVE

CAA-AD-095/2001R1

Supersedes CAA-AD-095/2001

Date of issue: July 03, 2002

AIRCRAFT - PARKING BRAKE OPERATED VALVE (PBOV) (ATA 32) - INSPECTION/REPAIR

Applicability:

AIRBUS A300, A310 and A300-600 aircraft, all certified models, all serial numbers, equipped with MESSIER BUGATTI parking brake operated valves (PBOV) PN A25315-1, with a serial number between H2372 and H2989 inclusive.

The requirements of this Airworthiness Directive (AD) do not apply to the valves marked "V" or "VF+E" (i.e. valves on which MESSIER BUGATTI Service Bulletin A25315-32-822 has already been embodied).

The operator is responsible for checking that any PBOV installed for replacement purpose on the aircraft after validation of this AD still meets the requirements of this AD.

Effective date: upon receipt

Compliance: Required as indicated in DGAC AD 2001-510(B) R1.

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.: 2001-510(B) R1

AIRBUS

A300, A310 and A300-600 aircraft

Yellow hydraulic system - Parking Brake Operated Valve (PBOV) (ATA 32)

APPLICABILITY:

The requirements of this Airworthiness Directive (AD) do not apply to the valves marked "V" or "VF+E" (i.e. valves on which MESSIER BUGATTI Service Bulletin A25315-32-822 has already been embodied).

The operator is responsible for checking that any PBOV installed for replacement purpose on the aircraft after validation of this AD still meets the requirements of this AD.

REASONS:

Cases of leakage on the PBOV of the yellow hydraulic system were reported on in-service A320´s. The same type of valve can be installed on A300, A310 and A300-600 aircraft.

Leakage can be found at one or more of the three hydraulic connections or at the vent hole.

This situation, if not corrected, could cause the loss of the yellow hydraulic system and render the parking brake accumulator inoperative, which would lead to the loss of the alternate braking system and the emergency parking braking function.

The Revision 1 of this AD requires the repair or replacement of all affected PBOV´s by December 31, 2002.

COMPLIANCE:

1. Within 7 days following the effective date of this AD at original issue, unless already accomplished, identify the PBOV (PN and serial number) and, if necessary, apply the corrective actions in accordance with AIRBUS INDUSTRIE Alert Service Bulletin (ASB) A300-32A0441 or A310-32A2124 or A300-32A6087.

2. Not later than December 31, 2002 repair or replace all the PBOV valves PN A25315-1 with a serial number comprised between H2372 and H2989 inclusive, and which are not identified with letter "V" or "VF+E", in accordance with ASB A300-32A0441 or A310-32A2124 or A300-32A6087.

Compliance with this action cancels the requirements of paragraph 1 of this AD.

REF.:

AIRBUS INDUSTRIE ASB A300-32A0441

AIRBUS INDUSTRIE ASB A310-32A2124

AIRBUS INDUSTRIE ASB A300-32A6087

(Any later approved revision of these ASB´s is acceptable)

MESSIER-BUGATTI Service Bulletin A25315-32-822.

This Revision 1 replaces original AD 2001-510(B) dated October 17, 2001.

EFFECTIVE DATES:

Original AD: OCTOBER 27, 2001

Revision 1: MAY 25, 2002