- Models
- G-44, G-44A
- Data sheet
- TCDSA-734
- Registered aircraft
- 82 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 |
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| FAA DRS HTML | 20 KB | 83779e7f…0fc735c | FAA DRS (API key needed) |
On this page
The airworthiness directive
54-26-01 GRUMMAN: Applies to All Models G-44 and G-44A Aircraft.
Compliance required by June 15, 1955.
There have been reported numerous instances of the landing gear locking mechanism failing because of either hydraulic system leaks or failure of the mechanical locks. These malfunctions have been reported in both the up and down position of the landing gear. To prevent future similar malfunctions, provide a more positive means of holding the gear in its locked position, both in the fully extended and fully retracted positions. Grumman Service Bulletin No. 24, October 18, 1954, accomplishes this by providing a closed center hydraulic system. This arrangement provides hydraulic pressure to hold the gear in the selected position and unwanted extension or retraction is prevented even though the mechanical locks may fail or leaks develop in the hydraulic system.
This supersedes AD 48-05-05.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 82
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.
| 1941 | 6 |
|---|---|
| 1942 | 5 |
| 1943 | 12 |
| 1944 | 12 |
| 1945 | 10 |
| 1946 | 9 |
| 1947 | 1 |
| 1948 | 1 |
| 1954 | 1 |
25 with no year recorded