AD 48-44-02
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
Improperly torqued center wing-to-fuselage attachment bolts (P/N AN 8-23A, AN 8-25A, and AN 8-31A) could result in reduced structural integrity of the wing-to-fuselage attachment, leading to possible failure of the wing structure.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect and verify that center wing-to-fuselage attachment bolts are properly torqued between 480 to 690 inch-pounds. Access may require cutting a 1 1/2-inch diameter hole in the wing center section lower skin for inspection. Compliance required at original certification and every 7,500 hours of operation or at approved airframe overhaul period for air carriers.
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Compliance Time
at original certification and at every 7,500 hours of operation thereafter, or at the approved airframe overhaul period for air carriers
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Affected Aircraft
CURTISS-WRIGHT Model C-46 Series aircraft including C-46A, C-46D, C-46F, C-46R, C-46E, C-46/CW20-T, and Super C-46/CW20-T models
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Wing Attach Bolts
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_48-44-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-44-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft Subject: Wing Attach Bolts 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: 48-44-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-44-02 SUBJECT HEADING: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-44-02 CURTISS-WRIGHT Applies to all C-46 Series aircraft. Compliance required at original certification and at every 7,500 hours of operation thereafter, or at the approved airframe overhaul period for air carriers. Check the center wing-to-fuselage attachment bolts, P/N AN 8-23A, AN 8-25A, and AN 8-31A, to determine that they are properly torqued. The proper torque value for these bolts is between 480 to 690 inch-pounds as per Curtiss-Wright Drawing No. 20-230-1000. For access to the 30 percent spar fitting, a 1 1/2-inch diameter hole can be cut in the wing center section lower skin beneath the fitting, just forward of the beam, and far enough inboard so that the resultant opening will be completely covered upon reinstallation of the wing foot fairing. This supersedes AD 47-51-06. FOOTER:
Document Text
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AD Final Rules - DRS_48-44-02.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 48-44-02 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft Subject: Wing Attach Bolts 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: 48-44-02 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 48-44-02 SUBJECT HEADING: Airworthiness Directives; CURTISS-WRIGHT Model C-46 Series Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 48-44-02 CURTISS-WRIGHT Applies to all C-46 Series aircraft. Compliance required at original certification and at every 7,500 hours of operation thereafter, or at the approved airframe overhaul period for air carriers. Check the center wing-to-fuselage attachment bolts, P/N AN 8-23A, AN 8-25A, and AN 8-31A, to determine that they are properly torqued. The proper torque value for these bolts is between 480 to 690 inch-pounds as per Curtiss-Wright Drawing No. 20-230-1000. For access to the 30 percent spar fitting, a 1 1/2-inch diameter hole can be cut in the wing center section lower skin beneath the fitting, just forward of the beam, and far enough inboard so that the resultant opening will be completely covered upon reinstallation of the wing foot fairing. This supersedes AD 47-51-06. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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