50-08-01: Tail Cone Mounting Longerons
FAA order 50-08-01 is an airworthiness directive. The FAA's subject line: Tail Cone Mounting Longerons. System: airframe structure.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Sikorsky Aircraft Corporation
- Models
- S-51
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 (587 characters)
50-08-01 SIKORSKY: Applies to All Model S-51 Helicopters.
Compliance required at each 25-hour inspection.
Inspect the upper longerons, Drawing S-520879, of the S-10-20-3003 tail cone mounting assembly for cracks in the area adjacent to the generator support plate and clamps, and in all the welds on the longerons adjacent to the clamps. If cracks are found, the defective member should be reinforced or replaced prior to continuing flight.
(Sikorsky Service Information Circular No. 38, Revision A, dated January 4, 1950, covers this same subject.)
This supersedes AD 48-11-03.
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/50-08-01.json · aircraft systems.