AIRWORTHINESS DIRECTIVE

CAA-AD-063/2001

Date of issue: July 13, 2001

AIRCRAFT - NAVIGATION - PITOT PROBES (ATA 34) - REPLACEMENT

Applicability: AIRBUS INDUSTRIE:

- A300 aircraft, all certified models and all serial numbers, except for aircraft modified in service in accordance with AIRBUS INDUSTRIE Service Bulletin (SB) A300-34-0166 (AIRBUS INDUSTRIE modification No.12236).

- A310 aircraft, all certified models and all serial numbers, except for aircraft on which AIRBUS INDUSTRIE modification No.11858 has been embodied in production (SB A310-34-2137 in service), or on which AIRBUS INDUSTRIE SB A310-34-2154 has been embodied in service.

- A300-600 aircraft, all certified models and all serial numbers, except for aircraft on which AIRBUS INDUSTRIE modification No.11858 has been embodied in production (SB A300-34-6116 in service).

Effective date: September 06, 2001

Compliance: Required as indicated in DGAC AD 2001-265(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.: 2001-265(B)

AIRBUS INDUSTRIE

A300, A310 and A300-600 aircraft

Navigation - Pitot probes (ATA 34)

APPLICABILITY:

AIRBUS INDUSTRIE:

- A300 aircraft, all certified models and all serial numbers, except for aircraft modified in service in accordance with AIRBUS INDUSTRIE Service Bulletin (SB) A300-34-0166 (AIRBUS INDUSTRIE modification No.12236).

- A310 aircraft, all certified models and all serial numbers, except for aircraft on which AIRBUS INDUSTRIE modification No.11858 has been embodied in production (SB A310-34-2137 in service), or on which AIRBUS INDUSTRIE SB A310-34-2154 has been embodied in service.

- A300-600 aircraft, all certified models and all serial numbers, except for aircraft on which AIRBUS INDUSTRIE modification No.11858 has been embodied in production (SB A300-34-6116 in service).

REASONS:

Operators have reported loss or fluctuation of airspeed when flying through extreme meteorological conditions.

Further to an investigation, the presence of ice crystals and/or water exceeding the current limits of the specifications of SEXTANT Pitot probes P/N 45000, is considered as the most probable cause of these airspeed discrepancies.

The installation on aircraft of newly certified Pitot probes meeting more stringent qualification requirements is rendered mandatory.

ACTIONS:

Before December 31, 2003, unless already accomplished, remove SEXTANT Pitot probes P/N 45,000 and replace them:

- Either by BF GOODRICH AEROSPACE probes PN 0851HV, in accordance with the instructions of SBs A300-34-0166, A310-34-2137 Revision 2 or A300-34-6116 Revision 2,

- Or by SEXTANT Pitot probes P/N C16254AA, in accordance with the instructions of SB A310-34-2154 Revision 1.

REF.: AIRBUS INDUSTRIE Service Bulletins:

A300-34-0166

A310-34-2137 Revision 2

A310-34-2154 Revision 1

A300-34-6116 Revision 2

(Any later approved revision of these SBs is acceptable).

EFFECTIVE DATE: JULY 07, 2001