A-93-110
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FAA: ISSUE AN AIRWORTHINESS DIRECTIVE APPLICABLE TO ALL PIPER CHEYENNE PA-31T SERIES TURBOPROP AIRPLANES REQUIRING AN INSPECTION OF THE ELEVATOR CONTROL TUBE ASSEMBLY (PN 40847-07) AND ROD END BEARING (PN 49261-02). THE SHANK AND THREADED PORTION OF THE ROD END SHOULD BE EXAMINED FOR EVIDENCE OF CRACKS, AND THE BEARING SHOULD MOVE FREELY WITHIN ITS HOUSING. THE CONTROL TUBE ASSEMBLY, BUSHINGS, AND ATTACHING BOLTS SHOULD BE EXAMINED FOR CRACKS, ELONGATION, OR OTHER EXCESSIVE WEAR. THIS INSPECTION SHOULD BE PERFORMED WITHIN THE NEXT 10 FLIGHT HOURS AND AT APPROPRIATE INTERVALS THEREAFTER TO ASSURE INTEGRITY OF THE FLIGHT CONTROL SYSTEM. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an airworthiness directive for all Piper Cheyenne PA-31T series turboprop airplanes, requiring an inspection of the elevator control tube assembly and rod end bearing within 10 flight hours and at regular intervals thereafter, to check for cracks, wear, and free movement, ensuring the flight control system's integrity.
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 | Feb 10, 1994 |
| NTSB number | LAX93IA029 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).