# AD 52-11-02: Nacelle

- Type: Airworthiness directive
- Status: Current
- Products: Kelowna Flightcraft R & D 240 Series
- Superseded by: Nothing supersedes this AD
- Product type: Aircraft, Large airplane
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/AF39B6D36B03D76C862569AB006CA7ED.0001
- DRS record last changed: May 30, 2024
- Page: https://openairdocs.org/ad/52-11-02

## The airworthiness directive

52-11-02 CONVAIR: Applies to All Model 240 Aircraft.

Compliance required not later than the first major engine overhaul after February 1, 1953.

To improve further the engine nacelle fire resistance of 240 aircraft, steel facings must be installed over certain aluminum alloy components of the engine cowl panels, the oil cooler duct, and the nacelle structure forward of the firewall.

(Convair Service Bulletin No. 240-425, Revision 2, describes these changes in detail. Preliminary information on this modification is contained in Convairogram No. 30, dated April 8, 1952.)

## Affected data sheets (1) (OpenAirDocs)

The type certificate data sheets whose models the AD names.

- [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)

No registered aircraft matched the models it names.

Its text cites no advisory circulars or STCs.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.