AD 46-17-01
final rule
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| aircraft | The Boeing Company | AT-6 (SNJ-2) | Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft |
| aircraft | The Boeing Company | AT-6A (SNJ-3) | Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft |
| aircraft | The Boeing Company | AT-6B | Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft |
| aircraft | The Boeing Company | AT-6C (SNJ-4) | Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft |
| aircraft | The Boeing Company | BC-1A | Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft |
Unsafe Condition
Broken universal joint pins in the flap control push-pull tubes, part number 19-152642, connecting the outer and inner flap.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the universal joint pins for breaks, replace all broken pins with new ones, and install close fitting rubber hose over each universal joint to secure pins.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
prior to original certification or at first periodic inspection thereafter
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft, including Navy SNJ-2, SNJ-3, SNJ-4 equivalents
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
Flap Control Universal Joint Pins
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_46-17-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-17-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft Subject: Flap Control Universal Joint Pins Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: AT-6 (SNJ-2) | AT-6A (SNJ-3) | AT-6B | AT-6C (SNJ-4) | BC-1A Product Type: Aircraft Product Subtype: Small Airplane Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 46-17-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-17-01 SUBJECT HEADING: Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-17-01 NORTH AMERICAN: (Was Mandatory Note 5 of AD-2-575-3.) Applies to Army BC-1A, AT-6, -6A, -6B, -6C; Navy SNJ-2, -3, -4 Aircraft. To be accomplished prior to original certification or at first periodic inspection thereafter. Inspect the universal joint pins in the flap control push-pull tubes, P/N 19-152642, connecting the outer and inner flap for broken pins. Replace all broken pins with new pins and install a close fitting rubber hose over each universal joint to hold in place any pins which may break in the future. (North American Service Bulletin dated March 6, 1947, covers this subject also.) FOOTER:
Document Text
Show stored source text (verify against official source)
AD Final Rules - DRS_46-17-01.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 46-17-01 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft Subject: Flap Control Universal Joint Pins Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: Make: The Boeing Company Model: AT-6 (SNJ-2) | AT-6A (SNJ-3) | AT-6B | AT-6C (SNJ-4) | BC-1A Product Type: Aircraft Product Subtype: Small 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: 46-17-01 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: AD NUMBER: 46-17-01 SUBJECT HEADING: Airworthiness Directives; North American Models BC-1A, AT-6, AT-6A, AT-6B, and AT-6C Aircraft ACTION: SUMMARY: DATES: ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 46-17-01 NORTH AMERICAN: (Was Mandatory Note 5 of AD-2-575-3.) Applies to Army BC-1A, AT-6, -6A, -6B, -6C; Navy SNJ-2, -3, -4 Aircraft. To be accomplished prior to original certification or at first periodic inspection thereafter. Inspect the universal joint pins in the flap control push-pull tubes, P/N 19-152642, connecting the outer and inner flap for broken pins. Replace all broken pins with new pins and install a close fitting rubber hose over each universal joint to hold in place any pins which may break in the future. (North American Service Bulletin dated March 6, 1947, covers this subject also.) FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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