- Effective
- July 29, 1991
- Model
- SN-601 Corvette
- Product
- Aircraft · Large airplane
- Amendment
- 39-7049
- Docket
- 91-NM-51-AD
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.
| File | Size | SHA-256 | Original |
|---|---|---|---|
| FAA DRS HTML | 21 KB | fdc75376…b68723a | FAA DRS (API key needed) |
On this page
The airworthiness directive
91-14-08 AEROSPATIALE: Amendment 39-7049. Docket No. 91-NM-51-AD.
Applicability: Model SN 601 Corvette series airplanes, which have incorporated Modification 1390, certificated in any category.
Compliance: Required within 100 landings after the effective date of this AD, unless previously accomplished.
To prevent ice formation in the fuel line and subsequent loss of engine power, accomplish the following:
A. Remove the existing thermostatic element, Part Number 9914, and install thermostatic element Part Number 5497-1, in accordance with Aerospatiale Corvette Service Bulletin 73-3, Revision 1, dated July 30,1990.
B. An alternative method 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 forwarded through an FAA Principal Maintenance Inspector, who may concur or comment and then send it to the Manager, Standardization Branch, ANM-113.
C. 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.
This amendment (39-7049, AD 91-14-08) becomes effective on July 29, 1991.