| AD Number | 87-14-08 | Status | Active |
| Effective Date | August 01, 1987 | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | 39-5677 |
| Product Type | ["Aircraft"] | Product Subtype | ["Large Airplane"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Viking Air Limited |
| Model(s) | DHC-7-1 DHC-7-100 DHC-7-101 DHC-7-102 DHC-7-103 |
87-14-08 DEHAVILLAND AIRCRAFT COMPANY OF CANADA, A DIVISION OF BOEING OF CANADA, LTD.: Amendment 39-5677. 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, gain access to the No. 4 flap track canoe "footprint area," the tank end ribs, and the wing box outboard of the No. 1 and No. 4 wing fuel tanks, in accordance with Paragraph A. of the Accomplishment Instructions of de Havilland Aircraft Company of Canada Service Bulletin 7-57-30, dated March 6, 1987, or Revision A, dated May 8, 1987. Conduct an external inspection of the tank end ribs, wing box outboard of the fuel tanks, and complete front spar to rear spar footprint areas of each No. 4 flap track canoe installation, in accordance with Paragraph B. of the Accomplishment Instructions of the service bulletin. If evidence of fuel leakage is found, prior to further flight perform an internal inspection, repair, and pressure test of the fuel tank, in accordance with Paragraph C. of the Accomplishment Instructions of the service bulletin.
B. Within 200 hours time-in-service after the effective date of this AD, install Modification 7/2536, in accordance with Paragraph D. of the Accomplishment Instructions of de Havilland Aircraft Company of Canada Service Bulletin 7-57-30, dated March 6, 1987, or Revision A, dated May 8, 1987.
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 directivewho 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 August 1, 1987.