# AD 47-41-02: Oil Line Supports

- 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- Superseded by: Nothing supersedes this AD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/1B04A7E89B716D4886256A34004DDBDC.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/47-41-02

## The airworthiness directive

47-41-02 BELL: (Was Mandatory Note 14 of AD-1H-2.) Applies to Models 47B and 47B3 Helicopters.

Compliance required prior to next flight after receipts of parts from Bell Aircraft Corp., but, in any event, not later than January 1, 1948.

To prevent excessive vibration and subsequent failure of the main oil line from the oil cooler to the oil filter, two additional supports must be installed for this oil line, one each at the bends near the oil filter and oil cooler.

(Bell Service Bulletin 47C28 (revised), dated July 1, 1947, 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 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/47-41-02/models.md
Every aircraft: https://openairdocs.org/ad/47-41-02/aircraft.md

Its text cites no advisory circulars or STCs.

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