# AD 48-02-01: Tail Rotor Drive Shaft

- Type: Airworthiness directive
- Status: Current
- Products: Scotts-Bell 47 47B and 47B3
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Registered aircraft: 1 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A0DEE6C57AD6DE5A86256A4D004F663E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/48-02-01

## The airworthiness directive

48-02-01 BELL: Applies to All 47B Series, Through Serial Number 78.

Compliance required before next 25 hours of operation.

Reinforce the tail rotor drive shaft bearing hangers by riveting reinforcement plates, Bell P/N 47-267-001-152, -153, -154, -155, -156, and -157, to the appropriate hangers with AN 470- AD3-4 rivets.

(Bell Service Bulletin 47C56 dated September 10, 1947, also covers this subject.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS H-1](https://openairdocs.org/tcds/H-1): Scott's-Bell 47 Inc; names 2 of 9 models: 47B, 47B3

## Registered aircraft it may apply to (OpenAirDocs)

Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment.

- Aircraft: 1 (1 by airframe model, 0 by engine model)
- Makers: Bell 1

Models with the most aircraft:

- [Bell 47B](https://openairdocs.org/model/bell-47b): 1 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/48-02-01/models.md
Every aircraft: https://openairdocs.org/ad/48-02-01/aircraft.md

Its text cites no advisory circulars or STCs.

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