AD 86-10-05
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Canada Corp. | PT6A-42 | PRATT & WHITNEY CANADA Model PT6A-42 Engines |
Unsafe Condition
First stage compressor hub failure, and possible engine failure due to Part Number 3030356 first stage compressor hub on PT6A-42 engines with serial numbers 93001 thru 93804 inclusive at or before 5,000 total cycles.
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Remove from service Part Number 3030356 first stage compressor hub on PT6A-42 engines with serial numbers 93001 thru 93804 inclusive at or before 5,000 total cycles in accordance with PWC Service Bulletin 3002, Revision 12, or FAA approved equivalent.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
at or before 5,000 total cycles
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Canada PT6A-42 engines with serial numbers 93001 thru 93804 inclusive
AI-generated summary from the source AD text. Verify against the official source before acting.
Federal Register Abstract
First Stage Compressor Hub
Applicability Source Text
Show captured applicability text from the source AD
AD Final Rules - DRS_86-10-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-10-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY CANADA Model PT6A-42 Engines Subject: First Stage Compressor Hub Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/05/1986 Make: Pratt & Whitney Canada Corp. Model: PT6A-42 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 86-10-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5266 AD NUMBER: 86-10-05 SUBJECT HEADING: PRATT & WHITNEY CANADA Model PT6A-42 Engines ACTION: SUMMARY: DATES: Effective June 5, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-10-05 PRATT & WHITNEY CANADA: Amendment 39-5266. Applies to Pratt & Whitney Canada (PWC) PT6A-42 turboprop engines. Compliance is required as indicated unless already accomplished. To prevent first stage compressor hub failure, and possible engine failure, accomplish the following: Remove from service Part Number (P/N) 3030356 first stage compressor hub on PWC Engine Model PT6A-42 with engine Serial Numbers 93001 thru 93804 inclusive at or before 5,000 total cycles in accordance with PWC Service Bulletin (SB) 3002, Revision 12, dated November 9, 1983, or FAA approved equivalent. NOTE: The 15,000 hour life limit remains unaffected by this airworthiness directive (AD). Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished. PWC SB 3002, Revision 12, dated November 9, 1983, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Pratt & Whitney Canada, Longueuil, Quebec, Canada, J4K-4X9. This document also may be examined at the Office of the Regional Counsel, Rules Docket 85-ANE-29, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803. This amendment becomes effective on June 5, 1986. FOOTER:
Document Text
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AD Final Rules - DRS_86-10-05.html Copy URL Print/Save as PDF Document Versions Feedback Details AD Number: 86-10-05 Document Type: AD Final Rules Docket Number: Unknown Subject Heading: PRATT & WHITNEY CANADA Model PT6A-42 Engines Subject: First Stage Compressor Hub Status: Current Citation: This information is not available. Citation Publish Date: Effective Date: 06/05/1986 Make: Pratt & Whitney Canada Corp. Model: PT6A-42 Product Type: Engine Product Subtype: Affected AD: Superseded AD: Affected By: Superseded By: Service/Office: Office of Primary Responsibility: CFR Part Reference: Part 39 Comments: AIRWORTHINESS DIRECTIVES FINAL RULES: 86-10-05 CITATION: This information is not available. PAGE NUMBER: DOCKET NUMBER: Unknown AMENDMENT: 39-5266 AD NUMBER: 86-10-05 SUBJECT HEADING: PRATT & WHITNEY CANADA Model PT6A-42 Engines ACTION: SUMMARY: DATES: Effective June 5, 1986. ADDRESSES: FOR FURTHER INFORMATION CONTACT: SUPPLEMENTARY INFORMATION: REGULATORY TEXT: 86-10-05 PRATT & WHITNEY CANADA: Amendment 39-5266. Applies to Pratt & Whitney Canada (PWC) PT6A-42 turboprop engines. Compliance is required as indicated unless already accomplished. To prevent first stage compressor hub failure, and possible engine failure, accomplish the following: Remove from service Part Number (P/N) 3030356 first stage compressor hub on PWC Engine Model PT6A-42 with engine Serial Numbers 93001 thru 93804 inclusive at or before 5,000 total cycles in accordance with PWC Service Bulletin (SB) 3002, Revision 12, dated November 9, 1983, or FAA approved equivalent. NOTE: The 15,000 hour life limit remains unaffected by this airworthiness directive (AD). Aircraft may be ferried in accordance with the provisions of FAR 21.197 and 21.199 to a base where the AD can be accomplished. PWC SB 3002, Revision 12, dated November 9, 1983, is incorporated herein and made a part hereof pursuant to 5 U.S.C. 552(a)(1). All persons affected by this directive who have not already received this document from the manufacturer may obtain copies upon request to Pratt & Whitney Canada, Longueuil, Quebec, Canada, J4K-4X9. This document also may be examined at the Office of the Regional Counsel, Rules Docket 85-ANE-29, Federal Aviation Administration, 12 New England Executive Park, Burlington, Massachusetts 01803. This amendment becomes effective on June 5, 1986. FOOTER:
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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