One of the blows of fate for New York Airways that affected the airline's continued existence was the accident of 16 May 1977, when Flight 971, a Sikorsky S-61L helicopter, experienced a tragic accident. The flight took off from John F. Kennedy International Airport (JFK) and was carrying 20 passengers and a crew of three when it landed at the Pan Am Building rooftop heliport (JPB) in New York City.
A few minutes after touching down at approximately 5:35 pm, the right main landing gear of the helicopter failed, causing the aircraft to roll over to the right. As a result, all main rotor blades struck the concrete helipad, leading to the tragic death of four waiting passengers who were struck by the blades. One of the blades, 8.8m (28 feet, 10 inches) long and weighing 95kg (209.3 pounds), flew out over the building's railing and fell alongside the building, and another segment of the blade fell to the street below, resulting in another fatality. Additional pieces of the main rotor blades were found up to four blocks north of the Pan Am Building.
The helicopter assigned to Flight 971/972 was a Sikorsky S-61L, c/n MSN 61427, registered N619PA, with 6,913:15 hours on the airframe at the time of the accident. It is worth noting that just 7 hours and 22 minutes had elapsed since the last primary inspection.
The National Transportation Safety Board (NTSB) investigation determined that the probable cause of the accident was: ". . . the fatigue failure of the upper right forward fitting of the right main landing gear tube assembly. Fatigue originated from a small surface pit of an undetermined source. All fatalities were caused by the operating rotor blades as a result of the collapse of the landing gear."
The image taken from the Chrysler building shows the N6675D Boeing Vertol 107 on the rooftop Heliport in 1963. Zoggavia Collection
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Cool projects! I also have experience working as onsite rep for leasing companies and aircraft assets investors overseeing B737-400 P2F & B737-800 BCF conversion projects.