AD 52-11-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Kelowna Flightcraft R & D Ltd. | 240 Series | CONVAIR Model 240 Aircraft |
Unsafe Condition
The engine nacelle lacks sufficient fire resistance due to aluminum alloy components in the engine cowl panels, oil cooler duct, and nacelle structure forward of the firewall.
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Required Actions
Install steel facings over certain aluminum alloy components of the engine cowl panels, oil cooler duct, and nacelle structure forward of the firewall as per Convair Service Bulletin No. 240-425, Revision 2.
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Compliance Time
not later than the first major engine overhaul after February 1, 1953
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Affected Aircraft
All Model 240 Aircraft
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Federal Register Abstract
Nacelle
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_52-11-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-11-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: CONVAIR Model 240 Aircraft Subject: Nacelle Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Kelowna Flightcraft R & D Ltd. Model: 240 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 52-11-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-11-02 SUBJECT HEADING: CONVAIR Model 240 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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.) FOOTER:
Document Text
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AD Final Rules - DRS_52-11-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 52-11-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: CONVAIR Model 240 Aircraft Subject: Nacelle Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Kelowna Flightcraft R & D Ltd. Model: 240 Series Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 52-11-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 52-11-02 SUBJECT HEADING: CONVAIR Model 240 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 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.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
This site is not affiliated with or endorsed by the FAA. Always verify with official sources.
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