A-05-033
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Require Sikorsky S-76 helicopter operators to: 1) conduct an immediate internal leakage test of all main rotor actuators with more than 500 hours since new and/or overhaul; 2) conduct subsequent recurring tests at a period not to exceed 500 hours; 3) report the test results to the Federal Aviation Administration and/or Sikorsky; and 4) correct any problems as necessary. (Urgent)
In plain language (FlightFinder summary)
The Federal Aviation Administration is urged to mandate that Sikorsky S-76 helicopter operators perform an immediate internal leakage test on all main rotor actuators exceeding 500 hours since new or overhaul, then repeat the test at intervals no longer than 500 hours. Operators must report the findings to the FAA and/or Sikorsky and rectify any detected issues.
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 Alternate Action |
|---|---|
| Mode | Aviation |
| Closed | May 25, 2011 |
| NTSB number | DCA05RA089 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).