AD 90-03-05

90-03-05 AVIONS MARCEL DASSAULT-BREGUET AVIATION (AMD-BA): Amendment 39-6480. Docket No. 89-NM-193-AD. Applicability: All Model Mystere Falcon 50 and 900 series airplanes, as listed in AMD-BA Alert Service Bulletins F50-A212 (F50-A32-19) and F900-A65 (F900-A32-6), both dated July 25, 1989, certificated in any category.

Compliance: Required as indicated, unless previously accomplished.

To prevent inability to manually open the main landing gear (MLG) door for MLG emergency extension, accomplish the following:

A. Within 30 days after the effective date of this AD, verify the integrity of the MLG emergency release system by accomplishing a functional test in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989.

1. If door release does not occur, prior to further flight, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with the appropriate servicebulletin.

2. If the door releases normally, accomplish one of the following:

a. Within 180 days or 1,300 hours time-in-service after the effective date of this AD, whichever occurs later, replace the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989; or

b. At intervals not to exceed 1,300 hours time-in-service, repeat the functional test.

B. Replacement of the MLG door manual release system control bell crank with an adjustable bell crank, in accordance with AMD-BA Alert Service Bulletin F50-A212 or F900-A65 (as applicable), both dated July 25, 1989, constitutes terminating action for the functional tests required by 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, Northwest Mountain Region.

NOTE: The request should be forwarded through an FAA Principal Maintenance Inspector (PMI), who will either concur or comment and then send it 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 Falcon Jet Corporation, Customer Support Department, Teterboro Airport, Teterboro, New Jersey 07608. 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 amendment (39-6480, AD 90-03-05) becomes effective on February 23, 1990.