A-94-101
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE SOCIETY OF FLIGHT TEST ENGINEERS, THE SOCIETY OF EXPERIMENTAL TEST PILOTS, THE AMERICAN INSTITUTE OF AERONAUTICS AND ASTRONAUTICS - FLIGHT TEST COMMITTEE, AND THE SYSTEM SAFETY SOCIETY: (1) INFORM MEMBERS OF THE CIRCUMSTANCES OF THESE ACCIDENTS, (2) URGE ALL COMPANIES INVOLVED IN THE DESIGN OF FLIGHT CONTROL SYSTEMS TO GIVE DUE CONSIDERATION TO AERODYNAMICALLY IMPOSED CONTROL SURFACE LIMITATIONS AND TO MAKE FLIGHT CONTROL SYSTEM LOGIC DETAILS AVAILABLE TO STABILITY AND CONTROL ENGINEERS, SYSTEM SAFETY ENGINEERS, AND OTHER STAFF WHO MIGHT FIND FLAWS IN THE LOGIC, AND (3) URGE ALL COMPANIES INVOLVED IN THE FLIGHT TEST OF AIRPLANES WITH ANTI-SPIN PARACHUTE SYSTEMS TO INCORPORATE A DESIGN FEATURE THAT WOULD PREVENT THE PARACHUTE FROM DEPLOYING IF THE JAWS SECURING THE PARACHUTE TO THE AIRPLANE ARE OPEN.
In plain language (FlightFinder summary)
The NTSB asks the Society of Flight Test Engineers, the Society of Experimental Test Pilots, the American Institute of Aeronautics and Astronautics - Flight Test Committee, and the System Safety Society to inform their members about the circumstances of these accidents. They are also asked to urge all companies involved in flight control system design to consider aerodynamically imposed control surface limitations and make control logic details available to relevant engineers. Additionally, they must urge companies flight-testing airplanes with anti-spin parachute systems to include a design feature that prevents parachute deployment if the securing jaws are open.
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 16, 1995 |
| NTSB number | CHI93MA276 |
| Addressees | Society of Flight Test Engineers, Inc. |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).