A-94-182
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: PROHIBIT THE INTENTIONAL OPERATION OF ATR-42 AND ATR-72 AIRPLANES IN KNOWN OR REPORTED ICING CONDITIONS UNTIL THE EFFECT OF UPPER WING SURFACE ICE ON THE FLYING QUALITIES AND AILERON HINGE MOMENT CHARACTERISTICS ARE EXAMINED FURTHER AS RECOMMENDED IN A-94-181 AND IT IS DETERMINED THAT THE AIRPLANES EXHIBIT SATISFACTORY FLIGHT CHARACTERISTICS. (URGENT)
In plain language (FlightFinder summary)
The FAA is asked to prohibit intentional flights of ATR-42 and ATR-72 aircraft in known or reported icing conditions until further study, as recommended in A-94-181, examines how upper wing surface ice affects flying qualities and aileron hinge moments, and until the aircraft are shown to have satisfactory flight characteristics.
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 | Jul 9, 1996 |
| NTSB number | DCA95MA001 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).