# AD 52-01-03: Damper Lever and Link

- Type: Airworthiness directive
- Status: Current
- Products: Scotts-Bell 47 47B, 47B3 and 47D
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Rotorcraft
- Registered aircraft: 5 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/0AA4427C683AA3BC86256A34004EB1D1.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/52-01-03

## The airworthiness directive

52-01-03 BELL: Applies to All Models 47B and 47B3 Helicopters and to Model 47D Helicopters Serial Numbers 1 to 100, Inclusive.

Compliance required at next 300-hour overhaul, but not later than March 1, 1952.

To provide lubrication to prevent seizing of the bearings, replace the existing damper lever and link assemblies (P/N 47-140-158 and -159) with the 47-140-158-1 lever and 47-140- 159-1 link assembly.

(Bell Service Bulletin No. 78 covers this same 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 3 of 9 models: 47B, 47B3, 47D

## 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: 5 (5 by airframe model, 0 by engine model)
- Makers: Bell 5

Models with the most aircraft:

- [Bell 47D](https://openairdocs.org/model/bell-47d): 4 aircraft (airframe model)
- [Bell 47B](https://openairdocs.org/model/bell-47b): 1 aircraft (airframe model)

All 2 models: https://openairdocs.org/ad/52-01-03/models.md
Every aircraft: https://openairdocs.org/ad/52-01-03/aircraft.md

Its text cites no advisory circulars or STCs.

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