A-06-073
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Review the design of turbine-powered engines (other than the CF34-1 and CF34-3, which are addressed in Safety Recommendation A-06-70) to determine whether they are susceptible to core lock and, for those engines so identified, require manufacturers of airplanes equipped with these engines to perform high power, high altitude sudden engine shutdowns and determine the minimum airspeed to maintain sufficient core rotation so that all methods of in-flight restart can be accomplished.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to review turbine-powered engines (excluding CF34-1 and CF34-3 models) for susceptibility to core lock. For engines found susceptible, the FAA must require airplane manufacturers to conduct high-power, high-altitude sudden engine shutdown tests and establish the minimum airspeed needed to maintain sufficient core rotation for all in-flight restart methods.
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, 2014 |
| NTSB number | DCA05MA003 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).