AIRWORTHINESS DIRECTIVE
CAA-AD-4-092R1/98
Date of issue: February 08, 1999
AIRCRAFT - THRUST REVERSER - DEACTIVATION
Applicability: . Airbus A310 and A300-600 aircraft equipped with JT9D-7R4 or P&W 4000 series engines.
Effective date: March 25, 1999
Compliance: Required as indicated in DGAC AD T98-477-273(B) R1.
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
THIS TEXT IS NOT SENT TO FOREIGN OPERATORS OF AIRCRAFT NON REGISTERED IN FRANCE. IT IS UP TO THE NATIONAL AUTHORITIES TO FORWARD IT TO THEM ON RECEIPT.
No T98-477-273(B) R1
Issued by: DGAC FRANCE as PRIMARY AIRWORTHINESS AUTHORITY
On: December 23, 1998
No person may operate an aircraft to which an Airworthiness Directive applies, except in accordance with the requirements of that Airworthiness Directive, unless otherwise agreed with the Authority of the state of registry.
ATA 71
TITLE: A310 and A300-600: Thrust Reverser
APPLICABILITY: Airbus A310 and A300-600 aircraft equipped with JT9D-7R4 or P&W 4000 series engines.
REASON: This Telegraphic Airworthiness Directive is prompted by a recent event of Thrust Reverser in flight deployment on an A300-600 aircraft equipped with P&W 4158 engine.
This condition, if not corrected could impair the flight controllability of the aircraft.
ACTION: To prevent an in flight Thrust Reverser deployrnent accomplish the following :
a) Before departure from Main Base or within the next four (4) flight cycles, whichever occurs first, Deactivate both Thrust Reversers in accordance with the instructions given in paragraph 42 of Airbus Industrie All Operators Telex (AOT) 78-08, November 30st,1998.
b) Reactivation of a Thrust Reverser is only allowed under the following conditions:
1-Reinforce the Stow Selection, and periodically inspect the Selector Valve in accordance the terms and conditions of paragraph 4.2.1.1 of Airbus Industrie AOT 78-09/98, December 1998.
2-Reinforce against power supply loss in accordance with the terms and conditions of paragraph 42.12 of Airbus Industrie AOT 78-09/98, December 1998.
3-Reinforce the protection against inadvertent pressurization of the Thrust Reverser in accordance with the terms and conditions of paragraph 42.13 of Airbus Industrie AOT 78-09/98, December 1998.
4- Perform a Thrust Reverser Aerostow seal check and a Power Drive Unit (PDU) check, in accordance with the terms and conditions of paragraph 4.2.1.4. of Airbus Industrie AOT 78-09/98, December 1998.
5- Perform a Thrust Reverser operational Test in accordance with the terms and conditions of paragraph 42. I.5 of Airbus Industrie AOT 78-09/98, December 1998.
NOTES:
a) Reason for Revision 1 of TAD 98-477-273(B) :
The purpose of this AD Revision 1 is to allow the reactivation of Thrust Reverser under certain conditions based on the findings of the event's investigation.
b) Operational Recommendations:
i) With both Thrust Reverser deactivated, follow the Operational recommendations described in Airbus Industrie Flight Operation Telex (FOT) 999.0124/98 Revision 3, December 10,1998.
ii) When, and if, Thrust Reverser(s) is/are reactivated, follow the Operational recommendations described in Airbus Industrie FOT 999.0140/98, December 23, 1998.
c) Inquiries regarding the technical content of this TAD should be made to :
DGAC France - Rachel DAESCHLER
Tel. : (33) 01.41.09.41.73 - Fax : (33) 01.41.09.42.20 (or 43.19)
or to
Airbus Industrie - Yves REGIS
Tel: (33) 05.61.9331.81 Fax (33) 05.61.93.45.80
EFFECTIVE DATE : Upon receipt.