- Models
- 649-79, 749-79
- Data sheet
- TCDSA-763
- Registered aircraft
- 1 matched by model
- Product
- Aircraft · Large 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 | 07d87881…b7cd969 | FAA DRS (API key needed) |
On this page
The airworthiness directive
48-27-03 LOCKHEED: Applies to 649 and 749 Series Airplanes Equipped With Curtiss C632S-A/850-4C2-0 Propellers.
Compliance required by August 1, 1948, and February 1, 1949.
To increase the ability of the propeller hubs to withstand excessive stresses under certain operating conditions the hubs must be returned to Curtiss-Wright Corp., Propeller Division for shotpeening of the threaded portion of the hub barrels. Effective August 1, 1948, hubs not peened before accumulating 2,500 hours of operating time are to be permanently removed from Constellation operation. Hubs not peened before accumulating 2,000 hours of operating time are to be temporarily withdrawn from operation until shotpeened. Peening must be accomplished on all hubs by February 1, 1949, regardless of accumulated operating time.
Affected TCDS · 1
The type certificate data sheets for the models this AD names, matched by model and maker.
Registered aircraft · 1
Registered aircraft whose airframe or engine model this AD names. Matched by model only, so check each against the AD’s applicability.