49-05-01: Curtiss 850-4C2-0 Propeller Blades
FAA order 49-05-01 is an airworthiness directive. The FAA's subject line: Curtiss 850-4C2-0 Propeller Blades. System: propeller.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Lockheed Aircraft Corporation
- Models
- 749-79, 749A-79
Dates and paperwork
- Docket
- Unknown
- Status
- Current
- The FAA's document
- Read the order on the FAA's site
The order itself the regulatory text, as published
Show the full text (618 characters)
49-05-01 LOCKHEED: Applies to All 749 Aircraft Equipped With Curtiss 850-4C2-0 Propeller Blades.
Compliance required by March 25, 1949.
Magnetically inspect the shank section, as far outboard as the 18-inch station, of all 850- 4C2-0 blades delivered before November 1, 1948, having less than 700 hours service and which have not been magnafluxed since delivery, using a coil not greater than 27 inches in diameter and providing at least 8,000 ampere turns, inspection of blades with lowest service time should be accomplished first wherever possible.
(Curtiss Service Bulletin No. 47 covers this same subject.)
Source: FAA Dynamic Regulatory System, airworthiness directives. The FAA's document is the authority; the register counts are this site's, from the FAA register of November 6, 2026. Connections as data: /graph/directive/49-05-01.json · aircraft systems.