- Effective
- April 1, 1981
- Model
- Cockpit Voice Recorder
- Product
- Appliance
- Amendment
- 39-4039
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 | f9708db5…e82a744 | FAA DRS (API key needed) |
On this page
The airworthiness directive
81-04-06 FAIRCHILD: Amendment 39-4039. Applies to Fairchild Industries Products: Cockpit Voice Recorder Model A100 series, having serial numbers 4733 through 5260 inclusive.
To prevent the possibility of destruction of the recording tape in an aircraft accident involving fire, due to the omission of the thermal insulation assembly, P/N 9300-A18, accomplish the following:
(a) Within 180 days after the effective date of this AD, unless previously accomplished, inspect the cockpit voice recorders in accordance with the accomplishment instructions of Fairchild Industrial Products Alert Field Service Bulletin No. CVR A140, dated December 10, 1979, paragraph 2B, Installation of Thermal Insulation 1 through 3. Missing insulation assemblies shall be installed in accordance with the above installation instructions, or approved equivalent instructions.
(b) Equivalent installation instructions must be approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
(c) Compliance times may be increased by Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through an FAA inspector.
This amendment becomes effective April 1, 1981.