AD 80-04-02
Applicability
| Type | Manufacturer | Model | Details |
|---|---|---|---|
| engine | Pratt & Whitney Canada Corp. | PT6A-20 | PRATT & WHITNEY AIRCRAFT OF CANADA, LTD. Model PT6A-6A, -6B, -6/C20 and -20 Engines |
| engine | Pratt & Whitney Canada Corp. | PT6A-6A | PRATT & WHITNEY AIRCRAFT OF CANADA, LTD. Model PT6A-6A, -6B, -6/C20 and -20 Engines |
| engine | Pratt & Whitney Canada Corp. | PT6A-6B | PRATT & WHITNEY AIRCRAFT OF CANADA, LTD. Model PT6A-6A, -6B, -6/C20 and -20 Engines |
| engine | Pratt & Whitney Canada Corp. | PT6A-6/C20 | PRATT & WHITNEY AIRCRAFT OF CANADA, LTD. Model PT6A-6A, -6B, -6/C20 and -20 Engines |
Unsafe Condition
The push-pull control terminal (P/N 3010175) may have more than three threads exposed outside the locknut, leading to inadequate engagement with the clevis (P/N 3010622 or 3012419).
AI-generated summary from the source AD text. Verify against the official source before acting.
Required Actions
Inspect the push-pull control terminal for a maximum of three threads outside the locknut. If more than three threads are visible, re-rig the linkage per P&WACL Maintenance Manual P/N 3015422 Part 3, Paragraph 91 and approved procedures. For clevises with witness holes, ensure safety wire cannot pass through both holes; re-rig if necessary.
AI-generated summary from the source AD text. Verify against the official source before acting.
Compliance Time
within the next 10 hours in service after the effective date of this AD unless already accomplished and every time the propeller reversing interconnect linkage is disconnected
AI-generated summary from the source AD text. Verify against the official source before acting.
Affected Aircraft
Pratt & Whitney Aircraft of Canada, Ltd. PT6A-6A, -6B, -6/C20, and -20 turboprop engines
AI-generated summary from the source AD text. Verify against the official source before acting.
Source: Official FAA Source ↗
Retrieved: Apr 8, 2026
Rights: U.S. Government Public Domain
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