AIRWORTHINESS DIRECTIVE

CAA-AD-003/1999

Date of issue: January 18, 1999

AIRCRAFT - IGNITION SYSTEM POWER SUPPLY - MODIFICATION

Applicability: AIRBUS INDUSTRIE aircraft, models A310-221, A310-222, A310-322, A300B4-620 and A300C4-620, all serial numbers on which AIRBUS INDUSTRIE modification No. 05388 (AIRBUS INDUSTRIE Service Bulletin A310-80-2001 or A300-80-6001) has been embodied, except for:
- aircraft on which AIRBUS INDUSTRIE modification No. 06792 on production line or
- aircraft on which AIRBUS INDUSTRIE Service Bulletin A310-74-2001 revision 4 or A300-74-6001 revision 2 on in-service aircraft
have been embodied.

Effective date: February 25, 1999

Compliance: Required as indicated in DGAC AD 98-479-266(B).

Remarks: Where applicable, the requirements of this AD must be integrated into the Aircraft's Logbook(s). Address inquiries concerning this AD to: Civil Aviation Authority, Airworthiness Division, Ruzyně Airport, 160 08 Prague 6, Czech Republic, tel.: 420 2 324086, fax: 420 2 364112.

Ing. Pavel MATOUŠEK
Director of Airworthiness Division, CAA CZ

 

GSAC

AIRWORTHINESS DIRECTIVE
released by DIRECTION GENERALE DE L'AVIATION CIVILE
Inspection and/or modifications described below are mandatory. No person may operate a product to which this
Airworthiness Directive applies except in accordance with the requirements of this Airworthiness Directive.
Translation of `Consigne de Navigabilité' ref. : 98-479-266(B)
In case of any difficulty, reference should be made to the French original issue.

AIRBUS INDUSTRIE
A310 and A300-600 Aircraft
P&W Engines - Modification to ignition system power supply (ATA 74)

APPLICABILITY:
AIRBUS INDUSTRIE aircraft, models A310-221, A310-222, A310-322, A300B4-620 and A300C4-620, all serial numbers on which AIRBUS INDUSTRIE modification No. 05388 (AIRBUS INDUSTRIE Service Bulletin A310-80-2001 or A300-80-6001) has been embodied, except for:

- aircraft on which AIRBUS INDUSTRIE modification No. 06792 on production line or

- aircraft on which AIRBUS INDUSTRIE Service Bulletin A310-74-2001 revision 4 or A300-74-6001 revision 2 on in-service aircraft

have been embodied.

REASONS:
Following the embodiment of AIRBUS INDUSTRIE modification No. 05388 on the aircraft equipped with Pratt & Whitney JT9D-7R4 engines, the two engine ignition systems (system A and system B) are connected to the emergency power supply (“EMERGENCY BUS 401XP”), which no longer complies with FAR ő 25.903.

ACTIONS:
Before November 30, 2000, modify the engine ignition in order to have two ignition systems with segregated power supply (system A on “NORMAL bus 202XP” and system B on “EMERGENCY BUS 401XP”) in accordance with the instructions of AIRBUS INDUSTRIE Service Bulletin A310-74-2001 revision 4 or A300-74-6001 revision 2.

REFERENCES:
AIRBUS INDUSTRIE Service Bulletins :
A310-74-2001 revision 4
A300-74-6001 revision 2
A310-80-2001
A300-80-6001
(or any other later approved revision of the above referenced documents).

EFFECTIVE DATE: DECEMBER 12, 1998