A-84-058
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN AIRWORTHINESS DIRECTIVE TO REQUIRE THE INSTALLATION OF A CONTAINMENT SHIELD OR DEFLECTOR ON THE ENGINE OR IN THE ENGINE COMPARTMENTS OF THE SIKORSKY S-76A HELICOPTER EQUIPPED WITH ALLISON 250-C30 ENGINES ON AN URGENT BASIS AFTER THE DEVICE(S) IS AVAILABLE. URGE THE MANUFACTURER TO ACCELERATE DESIGN AND FABRICATION OF THE DEVICE(S) TO PROVIDE PROTECTION FROM DEBRIS RESULTING FROM TURBINE FAILURE FOR THE NO. 1 SECTION OF TAIL ROTOR DRIVE SHAFT, THE ELECTRICAL WIRING, THE ADJACENT ENGINE, AND THE FUEL AND HYDRAULIC SYSTEM COMPONENTS.
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an urgent airworthiness directive requiring installation of a containment shield or deflector on Sikorsky S-76A helicopters with Allison 250-C30 engines, once the device is available. The FAA is also asked to urge the manufacturer to speed up design and fabrication of the device to protect the tail rotor drive shaft, electrical wiring, adjacent engine, and fuel/hydraulic components from debris generated by a turbine failure.
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 | Jan 11, 1985 |
| NTSB number | FTW84FA216 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).