90-16-01 AIRBUS INDUSTRIE: Amendment 39-6680. Docket No. 90-NM-62-AD.
Applicability: Model A300 series airplanes, serial numbers up to and including 253, certificated in any category.
Compliance: Required as indicated, unless previously accomplished.
To prevent malfunction of the main landing gear in the free fall mode, accomplish the following:
A. Within 100 landings after November 27, 1989 (the effective date of AD 89-23-01), inspect both main landing gears (MLG) for defective uplock control bellcrank support bearings, Part Number (P/N) 8116-16 in accordance with All Operators Telex (AOT) 32/88/02, dated December 14, 1988. If a defective bearing is found, replace it with a serviceable bearing prior to further flight.
B. Replace both MLG uplock control bellcrank support bearings, P/N 8116-16, with new sealed bearings, P/N 8106-16, in accordance with Airbus Industrie Service Bulletin A300-32- 395, dated November 30, 1989, as follows:
1. Within 30 months after the effective date of this AD, if bearings, P/N 8116-16, were replaced at the time of accomplishing paragraph A., above.
2. Within 15 months after the effective date of this AD, if bearings, P/N 8116-16 were not replaced at the time of accomplishing paragraph A., above.
C. 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.
D. 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, 17900 Pacific Highway South, Seattle, Washington, or the Standardization Branch, 9010 East Marginal Way South, Seattle, Washington.
This AD supersedes AD 89-23-01, Amendment 39-6366.
This amendment (39-6680, AD 90-16-01) becomes effective on August 31, 1990.