A-93-024
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: IN CONJUNCTION WITH THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION, ESTABLISH A WIND TUNNEL OR FLIGHT TEST PROGRAM TO STUDY THE AERODYNAMIC DEGRADATION OF BOTH NONSLATTED AND SLATTED AIRPLANE WINGS THAT HAVE UPPER SURFACE CONTAMINATION. THE STUDY SHOULD BE SUFFICIENT TO DEFINE LIFT, DRAG AND PITCHING MOMENT CHANGES RELATED TO ICE CONTAMINATION.
In plain language (FlightFinder summary)
The Federal Aviation Administration, in partnership with NASA, is asked to create a wind tunnel or flight test program to examine how upper surface contamination—specifically ice—degrades the aerodynamic performance of both slatted and nonslatted airplane wings. The study must be detailed enough to quantify changes in lift, drag, and pitching moment.
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 - Unacceptable Action |
|---|---|
| Mode | Aviation |
| Closed | Dec 20, 1994 |
| NTSB number | DCA92MA025 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).