AD 91-06-15

91-06-15 AIRBUS INDUSTRIE: Amendment 39-6941. Docket No. 90-NM-229-AD.

Applicability: All Model A300, A310, and A300-600 series airplanes, on which Airbus Industrie Modification 8135 has not been accomplished, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent the inability of the hydraulic power fire shut-off valves to close during emergency conditions, accomplish the following:

A. Within 180 days after the effective date of this AD, conduct an inspection of the hydraulic power fire shut-off valves to identify faulty valves, as specified in Airbus Industrie Service Bulletins A300-29-096 (for Model A300 series airplanes), A310-29-2025 (for Model A310 series airplanes), and A300-29-6017 (for Model A300-600 series airplanes), all dated January 29, 1990. Any faulty valve identified must be removed and replaced with a modified valve prior to further flight, in accordance with the appropriate service bulletins.

NOTE: The Airbus Industrie service bulletins reference Lucas Air Equipment Service Bulletin No. B38LC15-29-05, Revision 1, dated February 1990, for additional instructions.

B. An alternate means of compliance or adjustment of the compliance time, which provides an acceptable level of safety, may be used when approved by the Manager, Standardization Branch, ANM-113, FAA, Transport Airplane Directorate.

NOTE: The request should be submitted directly to the Manager, Standardization Branch, ANM-113, and a copy sent to the cognizant FAA Principal Inspector (PI). The PI will then forward comments or concurrence to the Manager, Standardization Branch, ANM-113.

C. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base in order to comply with the requirements of this AD.

All persons affected by this directive who have not already received the appropriate service documents from the manufacturer may obtain copies upon request to Airbus Industrie, Airbus Support Division, Avenue Didier Daurat, 31700 Blagnac, France. These documents may be examined at the FAA, Northwest Mountain Region, Transport Airplane Directorate, 1601 Lind Avenue S.W., Renton, Washington.

This amendment (39-6941, AD 91-06-15) becomes effective on April 22, 1991.