| AD Number | 52-01-06 | Status | Active |
| Effective Date | Not specified | Issue Date | Not specified |
| Docket Number | Unknown | Amendment | N/A |
| Product Type | ["Aircraft"] | Product Subtype | ["Rotorcraft"] |
| CFR Part | --- - Part 39 | CFR Section | N/A |
| Citation | This information is not available. | ||
| Manufacturer(s) | Scotts-Bell 47 Inc |
| Model(s) | 47 47B 47B3 47D 47D1 47E 47G 47G-2 47G-2A 47G-2A-1 47G-3 47G-3B 47G-3B-1 47G-3B-2 47G-3B-2A 47G-4 47G-4A 47G-5 47G-5A 47H-1 47J 47J-2 47J-2A 47K |
52-01-06 BELL: (Applies to All Model 47 series Helicopters Having Covered Tail Booms.
Compliance required at next 300-hour overhaul, but not later than March 1, 1952.
To prevent the main rotor striking the tail boom as a result of boom deflection when yawing at high forward speed, install the 47-706-211-1 or -2 spoiler on the tail boom. (Note: Spoiler must not be installed on any helicopter having an uncovered tail boom.)
(Bell Service Bulletin No. 81 covers this same subject.)