# AD 47-32-07: Manifold Pipe Chafing

- Type: Airworthiness directive
- Status: Current
- Products: Scotts-Bell 47 47B
- Superseded by: Nothing supersedes this AD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/76BE9D3581DF889E86256A34004D9D65.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-32-07

## The airworthiness directive

47-32-07 BELL: (Was Mandatory Note 7 of AD-1H-1.) Applies to All Model 47B With Aircooled 6V4-178-B3, -B32, O-335-1, or O-335-3 Engines.

Compliance required not later than next 25-hour inspection after September 15, 1947.

To eliminate chafing of intake manifold balance pipe against the oil tank an extra piece of hose, Aircooled P/N 11868, should be installed on the pipe at the side of the tank where the oil filter is mounted and approximately 1 3/8 inches from the hose which connects the two manifold pipes.

(Franklin Service Bulletin No. 55 dated May 28, 1947, pertains to 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 1 of 9 models: 47B

## 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/47-32-07/models.md
Every aircraft: https://openairdocs.org/ad/47-32-07/aircraft.md

Its text cites no advisory circulars or STCs.

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