AD 47-10-18
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49-46 Aircraft |
Unsafe Condition
The hose connections in the fuel line between the air metering chamber and fuel injection pump may fail, posing a fire hazard due to non-fire resistant hose and insufficient clamps.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Replace the hose connections with fire resistant hose and double hose clamps using Wright Aeronautical Corporation part numbers 856864 and 855403.
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Compliance Time
Not later than 100 hours of operation after March 1, 1947, or during conversion of Model 49-51 aircraft to Model 49-46 aircraft, whichever occurs first.
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Affected Aircraft
Lockheed Aircraft Corporation Model 49-46 Aircraft, including conversions from Model 49-51.
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Fire Resistant Fuel Line
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-10-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49-46 Aircraft Subject: Fire Resistant Fuel Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Lockheed Aircraft Corporation Model: 49-46 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-10-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-18 SUBJECT HEADING: LOCKHEED Model 49-46 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-18 LOCKHEED: (Was Mandatory Note 20 of AD-763-3.) Applies to All Model 49-46 Aircraft. Compliance required not later than 100 hours of operation after March 1, 1947, or during conversion of Model 49-51 aircraft to Model 49-46 aircraft, whichever occurs first. The hose connections in the fuel line between air metering chamber and fuel injection pump shall be changed to incorporate fire resistant hose and double hose clamps, using Wright Aeronautical Corporation P/N 856864 and 855403. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-10-18.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-18 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49-46 Aircraft Subject: Fire Resistant Fuel Line Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Lockheed Aircraft Corporation Model: 49-46 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: 47-10-18 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-18 SUBJECT HEADING: LOCKHEED Model 49-46 Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-18 LOCKHEED: (Was Mandatory Note 20 of AD-763-3.) Applies to All Model 49-46 Aircraft. Compliance required not later than 100 hours of operation after March 1, 1947, or during conversion of Model 49-51 aircraft to Model 49-46 aircraft, whichever occurs first. The hose connections in the fuel line between air metering chamber and fuel injection pump shall be changed to incorporate fire resistant hose and double hose clamps, using Wright Aeronautical Corporation P/N 856864 and 855403. 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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