Page:NTSB Aircraft Accident Report, United Airlines Flight 389.pdf/12



1.6

N7036U, a Boeing 727-22, serial number 18328 manufactured June 3, 1965, had accumulated a total of 611 hours flying time when the accident occurred. A numbered maintenance check was performed 125 hours before the accident and a service check was completed 16 hours before the accident. An en route service inspection was conducted before takeoff from LaGuardia. During the en route inspection a check was made for lightning damage and the No. 1 tire was inspected to insure it was suitable for service. These items were checked because of verbal comments received from the deplaning crew. No lightning damage was found and the tire was found suitable for service.

There were no discrepancies written up in the log sheet by the inbound crew but there were three deferred discrepancies on the log. These involved an inoperative circuit breaker panel light, the passenger cabin air mixing valve, and reset button in the buffet. The inbound crew stated that aside from the deferred items there was nothing wrong with the air-craft. According to the aircraft logs and the inbound crew's statements the aircraft was airworthy at the time of departure from LaGuardia.