AIRWORTHINESS DIRECTIVE

CAA-AD-067/1999R1

Replaces CAA-AD-067/1999

Date of issue: March 28, 2001

AIRCRAFT - ENGINE PYLON - LOWER SPAR (ATA 54) - INSPECTION

Applicability: AIRBUS INDUSTRIE A310 aircraft, A310-221, A310-222, A310-322, A310-324 and A310-325 models (A310 equipped with PRATT & WHITNEY engines), all serial numbers, on which AIRBUS INDUSTRIE production modification no. 10149 has not been embodied.

Effective date: May 17, 2001

Compliance: Required as indicated in DGAC AD 1999-237-285(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, Airport Ruzyne, 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: 1999-237-285(B) R1

AIRBUS INDUSTRIE

A310 Aircraft

Engine pylon - Lower spar (ATA 54)

APPLICABILITY:

AIRBUS INDUSTRIE A310 aircraft, A310-221, A310-222, A310-322, A310-324 and A310-325 models (A310 equipped with PRATT & WHITNEY engines), all serial numbers, on which AIRBUS INDUSTRIE production modification no. 10149 has not been embodied.

REASONS:

Cracks were found between ribs 9 and 10 in the lower pylon spar of AIRBUS INDUSTRIE A300, A310 and A300-600 aircraft equipped with PRATT & WHITNEY engines.

In order to prevent crack initiation, an inspection program was rendered mandatory on these aircraft by Airworthiness Directive 92-049-130(B).

Following in-service events, a new definition of the A310 inspection program is required.

Note: A300 and A300-600 aircraft are still covered by Revision 4 (or any later issued revision) of Airworthiness Directive 92-049-130(B).

Revision 1 of this AD is referring to liquid penetrant as an alternative inspection method proposed by AIRBUS INDUSTRIE Service Bulletin A310-54-2016 Revision 03.

ACTIONS:

1) Prior to the accumulation of 3,800 flights since new or within 1,500 flights following the effective date of this Airworthiness Directive at original issue, whichever occurs later, perform Eddy Current or liquid penetrant inspection and take corrective actions, if necessary, in accordance with the instructions of AIRBUS INDUSTRIE Service Bulletin A310-54-2016 Revision 02.

Aircraft which have accumulated more than 10,000 flights (without exceeding 20,000 flights) on the effective date of this Airworthiness Directive at original issue must be inspected within the following 1,000 flights.

Aircraft which have accumulated more than 20,000 flights on the effective date of his Airworthiness Directive at original issue must be inspected within the following 500 flights.

Aircraft which have been modified in accordance with the instructions of AIRBUS INDUSTRIE Service Bulletin A310-54-2022 must be inspected within 23,200 flights following the embodiment of this modification.

2) Depending on the inspection results, repeat the inspection at intervals and in accordance with the instructions defined by AIRBUS INDUSTRIE Service Bulletin A310-54-2016 Revision 02.

REF:

AIRBUS INDUSTRIE Service Bulletins:

A310-54-2016 Revision 02

A310-54-2022

Any later approved revision of these SB´s is acceptable.

Airworthiness Directive 92-049-130(B)

This Revision 1 replaces AD 1999-237-285(B) dated June 02, 1999.

EFFECTIVE DATE:

Original AD: JUNE 12, 1999

Revision 1: MARCH 31, 2001