AD 47-10-21
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49 |
Unsafe Condition
The original aluminum torque links in the main landing gear may fail due to fatigue cracking.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install steel torque links, LAC P/N 293882, on each main landing gear.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to July 1, 1947
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Lockheed Aircraft Corporation Model 49 serial numbers up to and including 2088
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Landing Gear Torque Links
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-10-21.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-21 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49 Subject: Landing Gear Torque Links 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Make: Lockheed Aircraft Corporation Model: 49-46 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-10-21 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-21 SUBJECT HEADING: LOCKHEED Model 49 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-21 LOCKHEED: (Was Mandatory Note 23 of AD-763-3.) Applies to Model 49 Serials Up to and Including 2088. Compliance required prior to July 1, 1947. Install steel torque links, LAC P/N 293882, on each main landing gear. (LAC Service Instruction 49/SI-100A covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-10-21.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-21 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49 Subject: Landing Gear Torque Links 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: 47-10-21 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-21 SUBJECT HEADING: LOCKHEED Model 49 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-21 LOCKHEED: (Was Mandatory Note 23 of AD-763-3.) Applies to Model 49 Serials Up to and Including 2088. Compliance required prior to July 1, 1947. Install steel torque links, LAC P/N 293882, on each main landing gear. (LAC Service Instruction 49/SI-100A covers this same subject.) 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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