"FAA/NTSB Investigations". Los Angeles Injury Law Firm (See post #4 titled "Nine Firefighters Believed Dead After Helicopter Crash in California"). 6 August 2008. Archived from the original on 24 June 2007. Retrieved 3 February 2009.
Schneider, Daniel B. "F.Y.I.", 25 July 1999. Accessed 30 September 2007. "Q. Back in the 1960s and 70s, helicopters bound for Kennedy International Airport used to take off from a deck atop the old Pan Am Building. Why was the service halted? A. As many as 360 helicopter flights a day were planned by New York Airways after the 59-story Pan Am building was completed in 1963, but a bitter public outcry delayed the first few flights until December 21, 1965 ... The operation proved unprofitable since the helicopters carried an average of only eight passengers, and the heliport, which had cost $1 million to build, closed in 1968 ... After another round of hearings – and renewed protests – flights resumed in February 1977. Three months later, the landing gear on one of the Sikorsky S-61 helicopters collapsed while passengers were boarding, flipping it on its side and sending a 20-foot rotor blade skidding across the roof and over the west parapet wall ... Within hours, the heliport was closed indefinitely."
"FAA/NTSB Investigations". Los Angeles Injury Law Firm (See post #4 titled "Nine Firefighters Believed Dead After Helicopter Crash in California"). 6 August 2008. Archived from the original on 24 June 2007. Retrieved 3 February 2009.
