A-12-054
NTSB Safety Recommendation — Aviation
Recommendation text
TO THE FEDERAL AVIATION ADMINISTRATION: Inform domestic and foreign manufacturers of airplanes that are certified under 14Code of Federal Regulations Parts 23 and 25 about the circumstances of this accident and advise them to consider, when estimating an airplane’s stall angle of attack in ground effect, the possibility that the airplane’s maximum lift coefficient in ground effect could be lower than its maximum lift coefficient in free air.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to notify manufacturers of airplanes certified under 14 Code of Federal Regulations Parts 23 and 25 about the details of this accident and recommend that, when predicting stall angle of attack in ground effect, they account for the potential that the maximum lift coefficient in ground effect may be lower than that in free air.
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 | Mar 26, 2013 |
| NTSB number | DCA11MA076 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).