A-79-091
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE TO REQUIRE A SPECIAL INSPECTION OF THE PROPELLER REVERSING INTERCONNECT LINKAGE OF ALL AIRCRAFT EQUIPPED WITH PRATT & WHITNEY AIRCRAFT OF CANADA LTD., PT6-6A, 6B, -6C/20 AND -20 SERIES TURBOPROP TO ASSURE THAT THESE INSTALLATIONS CONFORM TO THE AIRCRAFT MANUFACTURER'S PROPELLER REVERSING LINKAGE RIGGING SPECIFICATIONS. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an airworthiness directive requiring a special inspection of the propeller reversing interconnect linkage on aircraft with Pratt & Whitney PT6-6A, 6B, -6C/20, and -20 series turboprop engines. The inspection must confirm that these installations meet the aircraft manufacturer's propeller reversing linkage rigging specifications.
This plain-language summary is written by FlightFinder to explain the recommendation above. It is not the official wording — the verbatim NTSB text is quoted above.
Details
| Status | Closed - Acceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Mar 21, 1980 |
| NTSB number | 79647 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).