51-29-02: Main Landing Gear
FAA order 51-29-02 is an airworthiness directive. The FAA's subject line: Main Landing Gear. It names Curtiss Wright C-46: about 8 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: landing gear.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Airlift International, Inc.; Curtiss-Wright Corporation; Flying Tiger Line, Inc.; L. B. Smith Aircraft Corporation; Skyways International Trading and Transport Co.; Tempo Design Corporation
- Models
- C-46A, C-46D, C-46F, C-46R, C-46E, C-46A, C-46D, C-46E, C-46F, C-46A, C-46D, C-46F, C-46F, C-46/CW20-T, Super C-46/CW20-T
- On this site
- Curtiss Wright C-46 8 registered
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 (903 characters)
51-29-02 CURTISS-WRIGHT: Applies to all Model C-46 Series aircraft.
Compliance required by February 1, 1952, and each 500 hours thereafter.
Inspect the main landing gear side brace attachment fittings, P/N 20-310-1033 L and R, for cracks particularly from the edge of the forging to the lower inboard attaching bolt hole. If defects are found, the parts should be replaced by undamaged parts.
In view of unavailability of parts and controlled inspection procedures under which satisfactory operation has existed, it will be considered satisfactory to operate the aircraft with a cracked fitting under the following procedure until further notice. Inspect at periodic intervals not to exceed 150 hours with approximately an 8-power magnifying glass or dye penetrant or any equivalent method. If cracks extend beyond bolt hole, either through or around the hole, the fitting must be replaced.
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/51-29-02.json · aircraft systems.