AD 47-10-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Lockheed Aircraft Corporation | 49-46 | LOCKHEED Model 49 |
Unsafe Condition
Failure of the elevator tab control circuit breaker could result in loss of control of the elevator tab, leading to potential loss of aircraft control.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Install an AN 3161-P15 (or equivalent) non-trip-free circuit breaker in the elevator tab control circuit, located in the pilots' control stand. Minor wiring changes are required to connect the circuit breaker.
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Compliance Time
prior to March 1, 1947
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Affected Aircraft
Lockheed Aircraft Corporation Model 49, serial numbers 2021 to 2054, inclusive.
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Federal Register Abstract
Elevator Tab Control Circuit Breaker
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_47-10-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49 Subject: Elevator Tab Control Circuit Breaker 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Make: Lockheed Aircraft Corporation Model: 49-46 Product Type: Aircraft Product Subtype: Large Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 47-10-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-02 SUBJECT HEADING: LOCKHEED Model 49 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-02 LOCKHEED: (Was Mandatory Note 1 of AD-763-3). Applies Only to Model 49 Serial Numbers 2021 to 2054, Inclusive. Compliance required prior to March 1, 1947. Install an AN 3161-P15 (or equivalent) non-trip-free circuit breaker in the elevator tab control circuit. The breaker is to be located in the pilots' control stand, with access through a plate immediately forward of the control quadrant. Minor wiring changes to connect the circuit breaker are also necessary. (LAC Service Bulletin 049/SB-4 covers this same subject.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_47-10-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 47-10-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: LOCKHEED Model 49 Subject: Elevator Tab Control Circuit Breaker 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: 47-10-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 47-10-02 SUBJECT HEADING: LOCKHEED Model 49 ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 47-10-02 LOCKHEED: (Was Mandatory Note 1 of AD-763-3). Applies Only to Model 49 Serial Numbers 2021 to 2054, Inclusive. Compliance required prior to March 1, 1947. Install an AN 3161-P15 (or equivalent) non-trip-free circuit breaker in the elevator tab control circuit. The breaker is to be located in the pilots' control stand, with access through a plate immediately forward of the control quadrant. Minor wiring changes to connect the circuit breaker are also necessary. (LAC Service Bulletin 049/SB-4 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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