# AD 55-15-02: Propeller Feathering System

- Type: Airworthiness directive
- Status: Current
- Products: Kelowna Flightcraft R & D 240 Series and 340
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- Registered aircraft: 7 may be affected, by airframe or engine model (OpenAirDocs)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/E19FDFFF706114C4862569AB006E149E.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/55-15-02

## The airworthiness directive

55-15-02 CONVAIR: Applies to All 240 and 340 Series Aircraft Equipped with Hamilton Standard Propellers. Compliance required by first scheduled engine change after November 1, 1955, but not later than November 1, 1956.

To increase the fire resistance integrity of the propeller feathering system against damage by a powerplant fire, all flexible hose components of propeller feathering lines forward of the firewall in zone 2 must be replaced with lines and fittings which will meet current fire resistance requirements. Convair Service AirGram No. 123 dated October 8, 1954, covers this subject. The following hose assemblies may also be considered acceptable for this application:

  (a) Aeroquip 680-10S hose assemblies with Aeroquip 304 protective sleeves over end fittings (Aeroquip assembly P/N 304000).

  (b) Resistoflex-SSFR-3800-10 hose assemblies.

  (c) Aeroquip 309009 hose assemblies.

## Affected data sheets (2) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [TCDS 6A6](https://openairdocs.org/tcds/6A6): Kelowna Flightcraft R & D Ltd.; names 1 of 6 models: 340
- [TCDS A-793](https://openairdocs.org/tcds/A-793): Kelowna Flightcraft R & D Ltd.; names 1 of 1 models: 240 Series

## 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: 7 (7 by airframe model, 0 by engine model)
- Makers: Convair 7

Models with the most aircraft:

- [Convair 340](https://openairdocs.org/model/convair-340): 7 aircraft (airframe model)

All 1 models: https://openairdocs.org/ad/55-15-02/models.md
Every aircraft: https://openairdocs.org/ad/55-15-02/aircraft.md

Its text cites no advisory circulars or STCs.

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