Helicopter Landing‐Gear Blamed; U.S. Inspection of All S‐61's Urged
Natl Transportation Safety Bd investigators attribute accident to landing-gear collapse, precipitated possibly by metal fatigue; recommends immediate inspection of 'suspect' attachment mechanism on all Sikorsky S-61 helicopters; NY Airways official rebuffs suggestion that additional safety hazard was created by standard practice of keeping rotor turning during loading and unloading; co temporarily suspends all daily flights to NYC met area airports; alleged similar landing-gear collapse of S-61 mil craft in Vietnam described; outcry by city residents against operation of heliport noted; wreckage and landing-gear attachment illus (M)
