56-15-01: Antitorque Control System
FAA order 56-15-01 is an airworthiness directive. The FAA's subject line: Antitorque Control System. It names Bell 47: about 478 aircraft on the U.S. register today, though an order usually covers particular versions or serial numbers rather than every one. System: other and general.
What it applies to as the FAA lists it
- Kind of product
- Aircraft
- Makes
- Scotts-Bell 47 Inc
- Models
- 47H-1
- On this site
- Bell 47 478 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 (818 characters)
56-15-01 BELL: Applies to Model 47H1 Helicopters, Serial Numbers 1347 Through 1356.
Compliance required as soon as possible, but not later than August 15, 1956.
In order to prevent tail boom skin cracking in the area of the aft ballast, it is necessary to complete a revised aft ballast provision installation utilizing Bell Kit No. 47-2406-1B. In addition it is also necessary to install Bell Kit No. 47-2406-1A, Antitorque Control Pulley Brackets Installation, at this same time to permit the installation of the new tail rotor control cable assembly, P/N NAS 302 R-66-5537. This revised antitorque control system installation is required to provide adequate clearance with the new aft ballast provision installation.
(Bell Mandatory Service Bulletin No. 110 dated June 1, 1956 covers this same subject.)
Related safety bulletins advice on the same designs, not orders
2001-02-09SW-01-13 ·
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/56-15-01.json · aircraft systems.