# AD 48-19-01: Damper Support Frames

- 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- Superseded by: Nothing supersedes this AD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/BF75F7AE34E93E2586256A34004E3773.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/48-19-01

## The airworthiness directive

48-19-01 BELL: Applies to All Models 47B, 47B3, and 47D Helicopters.

Compliance required by June 15, 1948.

To provide continuous oil submersion of stabilizer bar damper replenishing valves, the dampers should be rotated 30 degrees down from their present position. This is accomplished by replacing the existing damper support frames, 47-140-132-1, with redesigned frames, 47-140- 013.

(Bell Service Bulletin 64 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 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/48-19-01/models.md
Every aircraft: https://openairdocs.org/ad/48-19-01/aircraft.md

Its text cites no advisory circulars or STCs.

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