A-84-065
NTSB Safety Recommendation — Aviation
Recommendation text
THE NTSB RECOMMENDS THAT THE FEDERAL AVIATION ADMINISTRATION: IN CONJUNCTION WITH THE AIRPLANE MANUFACTURER, EVALUATE THE CIRCUMSTANCES OF RECENT INCIDENTS OF MAIN LANDING GEAR MALFUNCTIONS INVOLVING BOEING 727 AIRPLANES WHICH HAVE BEEN MODIFIED IN ACCORDANCE WITH THE ORIGINAL AIRWORTHINESS DIRECTIVE 79-04-01, WITH PARTICULAR EMPHASIS ON THE GEOMETRIC RELATIONSHIP BETWEEN THE MAIN LANDING GEAR AND THE WHEEL-WELL DOORS THAT MAY PERMIT THE TIRE TO JAM ON THE WHEEL-WELL DOOR SO THAT THE GEAR CANNOT BE EXTENDED, TO DETERMINE WHETHER THE PROVISIONS OF REVISED AIRWORTHINESS DIRECTIVE 79-04-01 REGARDING OPTIONAL INSTALLATION OF THE NEW SAFETY BAR IDENTIFIED IN BOEING SERVICE BULLETIN 727-32-275 SHOULD BE MADE MANDATORY AS AN ADDED MEASURE TO PRECLUDE MAIN LANDING GEAR/WHEEL-WELL DOOR JAMS.
In plain language (FlightFinder summary)
The Federal Aviation Administration, working with Boeing, is asked to examine recent main landing gear problems on modified Boeing 727s, specifically the risk of tires jamming against wheel-well doors due to geometry. Based on that review, the FAA must decide whether to require installation of a safety bar, currently optional under an airworthiness directive, to prevent such jams.
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 4, 1985 |
| NTSB number | MIA83IA075 |
| Addressees | FAA |
External links
NTSB safety recommendations are advisory; addressees are not legally required to adopt them. Source: NTSB CAROL (public domain).