87-02-03 THE DE HAVILLAND AIRCRAFT COMPANY OF CANADA, A DIVISION OF BOEING OF CANADA, LTD.: Amendment 39-5514. Applies to all Model DHC-7 series airplanes, certificated in any category. Compliance required as indicated, unless previously accomplished.
To preclude a fuel fire in the wing landing light bay, accomplish the following:
A. Within the next 50 hours time-in-service after the effective date of this AD, remove the canoe fairings of the left and right No. 4 flap track from the wing lower surface and conduct a visual inspection of the external wing skin exposed, in accordance with Paragraph 1 of the Accomplishment Instructions of de Havilland Aircraft Company of Canada Service Bulletin 7- 28-18, dated May 16, 1986. If evidence of a fuel leakage is found, prior to further flight perform an internal inspection, repair, and pressure test of the fuel tank in accordance with Paragraph 2 of the Accomplishment Instructions of that service bulletin.
B. Within 200 hourstime-in-service after the effective date of this AD, install Modification 7/2518 in accordance with Paragraph 3 of the Accomplishment Instructions of de Havilland Aircraft Company of Canada Service Bulletin 7-28-18, dated May 16, 1986.
C. Alternate means of compliance which provide an acceptable level of safety may be used when approved by the Manager, New York Aircraft Certification Office, FAA, New England Region.
D. Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate airplanes to a base for the accomplishment of the inspections and modifications required by this AD.
All persons affected by this directive who have not already received the appropriate service information from the manufacturer may obtain copies upon request to The de Havilland Aircraft Company of Canada, a Division of Boeing of Canada, Ltd., Garrett Boulevard, Downsview, Ontario M3K 1Y5, Canada. This information may be examined at FAA, Northwest Mountain Region, 17900 Pacific Highway South, Seattle, Washington, or FAA, New England Region, New York Aircraft Certification Office, 181 South Franklin Avenue, Room 202, Valley Stream, New York.
This amendment becomes effective January 30, 1987.