AIRWORTHINESS DIRECTIVE

CAA-AD-064/2002R1

Date of issue: June 13, 2002

APPLIANCE - TRANSFORMER THALES AVIONICS (ATA 34) - INSPECTION

Applicability: AIRBUS A300 aircraft in FFCC (Forward Facing Crew Cockpit) version certified for A300B2-203, A300B4-203 and A300B4-220 models, all serial numbers.

Effective date: Upon receipt.

Compliance: Required as indicated in DGAC AD 2002-264(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 2002-264(B) R1

AIRBUS

A300, A310 and A300-600 aircraft

THALES AVIONICS equipment: failure of transformers (ATA 34)

APPLICABILITY:

AIRBUS A300 aircraft in FFCC (Forward Facing Crew Cockpit) version certified for A300B2-203, A300B4-203 and A300B4-220 models, all serial numbers.

A310 and A300-600 aircraft, all certified models and all serial numbers.

REASONS:

AIRBUS and THALES AVIONICS have determined that a batch of transformers liable to be in a failed status could be installed on the following pieces of equipment:

- Altimeter,

- Vertical speed indicator,

- RMI/ADF indicator,

- RMI/VOR/DME indicator,

- Speed indicator (airspeed/mach).

The failure of one of these transformers could lead to a 115 VAC current leak to the connected systems and could lead to the loss of indications on the PFD's. In such a situation, the flight must then be continued with the standby instruments.

Revision 1 of this AD is issued in order to add "standby altimeter operational" among the conditions for operational availability of the aircraft.

COMPLIANCE:

From the effective date of this AD the operational availability of the aircraft is authorized under the following conditions:

- standby altimeter operational

and

- at least 1 standby speed indicator operational

and

- standby horizon operational

and

- standby magnetic compass operational.

The provisions defined above are equivalent to a temporary restriction to the MEL of the aircraft.

Therefore, the aircraft MEL must be modified by the operator to incorporate the provisions above.

Pending this incorporation, before the next flight following the effective date of this AD, this AD must be included in the aircraft MEL and flight crews must be informed of the content of this AD.

This Revision 1 replaces original AD 2002-264(B) issued on May 15, 2002.

EFFECTIVE DATES:

Original AD: MAY 25, 2002

Revision 1: Upon receipt from MAY 29, 2002