A-81-111
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: EXAMINE ALL AIRCRAFT MODELS WITH AFT POD-MOUNTED ENGINE/THRUST REVERSERS TO DETERMINE IF VERTICAL STABLIZER AND RUDDER EFFECTIVENESS IS LOST OR REDUCED WHEN REVERSE THRUST IS USED DURING LANDING ROLLOUT. IF THIS ADVERSE CHARACTERISTIC OCCURS, REVISE LANDING PROCEDURES, APPROPRIATE MANUALS, AND TRAINING MATERIALS AS NECESSARY TO ASSURE THAT MAXIMUM DIRECTIONAL CONTROL IS MAINTAINED DURING THE LANDING ROLLOUT.
In plain language (FlightFinder summary)
The Federal Aviation Administration is asked to examine all aircraft models with aft pod-mounted engines and thrust reversers to assess whether vertical stabilizer and rudder effectiveness is compromised when reverse thrust is used during landing rollout. If such an adverse characteristic is found, the FAA must update landing procedures, relevant manuals, and training materials to ensure maximum directional control during the landing rollout.
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 19, 1985 |
| NTSB number | LAX80FA111 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).