A-84-109
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: ISSUE AN EMERGENCY AIRWORTHINESS DIRECTIVE TO REQUIRE AN INSPECTION AND MODIFICATION OF THE ENGINE COMPARTMENT FIREWALL SECTION AND VERIFICATION OF PROPER CLEARANCES BETWEEN THE NO. 1 SECTION OF THE TAIL ROTOR DRIVESHAFT AND THE INNER SURFACE OF THE CENTER FIREWALL IN ACCORDANCE WITH THE FORTHCOMING SIKORSKY AIRCRAFT S-76A ALERT SERVICE BULLETIN PRIOR TO FURTHER FLIGHT. (URGENT)
In plain language (FlightFinder summary)
The NTSB asks the FAA to issue an emergency airworthiness directive requiring an inspection and modification of the engine compartment firewall section, as well as verification of proper clearances between the No. 1 section of the tail rotor driveshaft and the inner surface of the center firewall. These actions must be performed in accordance with the forthcoming Sikorsky Aircraft S-76A Alert Service Bulletin, before further flight.
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 | Jun 26, 1985 |
| NTSB number | NYC84FA319 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).