- Effective
- June 8, 1981
- Models
- Colonial C-1, Colonial C-2, Lake LA-4, Lake LA-4-200, Lake LA-4A, Lake LA-4P
- Data sheet
- TCDS1A13
- Registered aircraft
- 154 matched by model
- Product
- Aircraft · Small airplane
- Amendment
- 39-4128
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 |
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On this page
The airworthiness directive
79-21-09 R1 CONSOLIDATED AERONAUTICS: Amendment 39-3589 is further amended by Amendment 39-4128. Applies to Colonial C-1, Colonial C-2, Lake LA-4, Lake LA-4A, Lake LA-4P, and Lake LA-4-200 airplanes with an anchor light or bilge pump installed with a power line which bypasses the battery relay.
Compliance required within the next 50 hours time in service unless already accomplished.
To preclude burning of power wires in case of an electrical short, install a Cole-Hersee 3031-D fuse holder and a Buss AG5A 5 ampere fuse, or FAA approved equivalents, within 4 inches of the battery relay, in the power lines for the anchor light and bilge pump.
(Lake Aircraft Division, Consolidated Aeronautics Service Bulletin B-62 pertains to the installation required by this AD.)
Upon request, an equivalent method of compliance with the requirements of this AD may be approved by the Chief, Engineering and Manufacturing Branch, Federal Aviation Administration, New England Region.
Amendment 39-3589 became effective upon publication in the FEDERAL REGISTER.
This Amendment, 39-4128, becomes effective June 8, 1981.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 154
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1964 | 1 |
|---|---|
| 1972 | 1 |
| 1973 | 1 |
| 1975 | 11 |
| 1976 | 19 |
| 1977 | 20 |
| 1978 | 21 |
| 1979 | 12 |
| 1980 | 7 |
| 1981 | 3 |
| 1982 | 2 |
| 1983 | 1 |
| 1984 | 3 |
| 1985 | 1 |
51 with no year recorded