AD 49-12-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46A | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46D | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46F | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46R | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46E | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | C-46/CW20-T | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
| aircraft | Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Aircraft Corporation | Skyways International Trading and Transport Co. | Tempo Design Corporation | Super C-46/CW20-T | Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft |
Unsafe Condition
Cracks in the aileron trim tab motor support bracket (P/N S-20-030-5050) attached to the aft face of the 70 percent rear spar at wing Station 178.36.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the aileron trim tab motor support bracket for cracks. Replace defective parts. Adjust inspection intervals upon FAA approval with substantiating data.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within 25 hours' time in service after the effective date of this amendment, unless already accomplished within the last 475 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service from the last inspection
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
CURTISS-WRIGHT Model C-46 Series aircraft equipped with Aileron Tab Motor Bracket Assembly, Curtiss-Wright P/N 20-030-5050
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Aileron Trim Tab
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_49-12-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 49-12-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft Subject: Aileron Trim Tab Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Air...Show more Model: C-46A | C-46D | C-46F | C-46R | C-46E | C-46/CW20-T | Super C-46/CW20-T 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: 49-12-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 49-12-01 SUBJECT HEADING: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 49-12-01 CURTISS-WRIGHT Applies to Model C-46 Series aircraft equipped with Aileron Tab Motor Bracket Assembly, Curtiss-Wright P/N 20-030-5050. Compliance required within 25 hours' time in service after the effective date of this amendment, unless already accomplished within the last 475 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service from the last inspection. Inspect the aileron trim tab motor support bracket (P/N S-20-030-5050) attached to the aft face of the 70 percent rear spar at wing Station 178.36 for cracks. Defective parts should be replaced. Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Southern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase. Revised December 28, 1964. FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_49-12-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 49-12-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft Subject: Aileron Trim Tab Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: Airlift International, Inc. | Curtiss-Wright Corporation | Flying Tiger Line, Inc. | L. B. Smith Air...Show more Model: C-46A | C-46D | C-46F | C-46R | C-46E | C-46/CW20-T | Super C-46/CW20-T 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: 49-12-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 49-12-01 SUBJECT HEADING: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 49-12-01 CURTISS-WRIGHT Applies to Model C-46 Series aircraft equipped with Aileron Tab Motor Bracket Assembly, Curtiss-Wright P/N 20-030-5050. Compliance required within 25 hours' time in service after the effective date of this amendment, unless already accomplished within the last 475 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service from the last inspection. Inspect the aileron trim tab motor support bracket (P/N S-20-030-5050) attached to the aft face of the 70 percent rear spar at wing Station 178.36 for cracks. Defective parts should be replaced. Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Southern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase. Revised December 28, 1964. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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