- Effective
- July 5, 1985
- Models
- DHC-7-1, DHC-7-100, DHC-7-101, DHC-7-102, DHC-7-103
- Data sheet
- TCDSA20EA
- Registered aircraft
- 7 matched by model
- Product
- Aircraft · Large airplane
- Amendment
- 39-5074
Unofficial copy of the text in the FAA’s Dynamic Regulatory System. The FAA’s own copy is the authoritative one. DRS record last changed May 30, 2024.
Copies of the files this page was built from, with their SHA-256. Retrieved October 18, 2026.
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On this page
The airworthiness directive
85-12-03 DeHAVILLAND: Amendment 39-5074. Applies to DeHavilland Model DHC-7 series airplanes, serial numbers (S/N) 3 thru 86, 89, 91, 94, and 95, certificated in all categories. To preclude the occurrence of a ground fire caused by engine fuel impinging on landing gear brakes under certain wind conditions, accomplish the following, unless already accomplished:
A. Within the next nine months after the effective date of this AD, accomplish a modification of the engine fuel drain system in accordance with Modification No. 7/2175 and DeHavilland Service Bulletin 7-71-18, Revision A, dated January 20, 1984.
B. 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.
C. 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 inspections and modifications required by this AD.
This amendment becomes effective July 5, 1985.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 7
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1979 | 1 |
|---|---|
| 1981 | 3 |
| 1982 | 1 |
| 1985 | 1 |
1 with no year recorded