- Models
- 415-C, 415-CD, 415-D
- Registered aircraft
- 1,005 matched by model
- Product
- Aircraft · Small airplane
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 | 19 KB | d7077a70…6125462 | FAA DRS (API key needed) |
On this page
The airworthiness directive
47-20-09 ERCO: (Was Service Note 1 of AD-718-6.) Applies to 415-C, -CD and -D Aircraft. Compliance required at each 100-hour inspection and immediately after each electrical system malfunction. Check the operation of the voltage regulator by observing the ammeter reading after starting and until the battery becomes charged. A normal operation would indicate a charging rate up to 11-13 amperes for periods of time up to 20 minutes after starting. The charging rate should reduce to 2 amperes or less within 2 hours or operation. (Ercoupe Service Department Memorandum No. 23 covers this same subject.)
Affected TCDS · 2
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1,005
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1940 | 3 |
|---|---|
| 1941 | 8 |
| 1945 | 13 |
| 1946 | 719 |
| 1947 | 71 |
| 1948 | 4 |
| 1953 | 1 |
| 1955 | 2 |
| 1956 | 1 |
| 1957 | 1 |
| 1961 | 1 |
| 1963 | 1 |
180 with no year recorded