- Models
- BT-13, BT-13A (Army SNV-1), BT-13B (Navy SNV-2), BT-15
- Data sheet
- TCDSA-2-571
- Registered aircraft
- 110 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 | 20 KB | 8b49f021…3a6be12 | FAA DRS (API key needed) |
On this page
The airworthiness directive
52-02-01 Convair: Applies to All Model BT-13, -13A, -13B and BT-15 Aircraft With Bronze Rear Spar to Center Section Attachment Fittings.
Compliance required as indicated.
When it has been determined that the rear spar to center section attachment fittings are bronze castings, compliance with this Airworthiness Directive should be effected every 24 hours flying time or every 6 months nonflying time, whichever occurs first.
(1) Inspect visually the rear spar to center section attachment fittings on both sides of the rear spar for evidence of cracks. All cracked fittings (see Figure 1) should be replaced with new fittings of equivalent or greater strength.
FIGURE 1
(2) A magnet may be used to determine if the fitting is a steel casting.
(3) Fittings that have been made from aluminum alloy forgings can be readily differentiated from those made from bronze castings by visual inspection.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 110
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1941 | 24 |
|---|---|
| 1942 | 30 |
| 1943 | 12 |
| 1944 | 4 |
| 1945 | 3 |
| 1946 | 5 |
| 1947 | 1 |
| 1953 | 1 |
| 1980 | 1 |
29 with no year recorded