Flight and Communication Log
On the day of the accident, the aircraft departed Rawalpindi Airport at 0601LT on a domestic flight to Skardu, carrying 9,146 pounds of food supplies. At 0604LT, the crew contacted Cherat Homer, reporting that they were due at the control zone boundary at 0610LT. According to the Chakhlala ATC log, the aircraft called Skardu at 0607LT on frequency 119.7, but there was no response from Skardu on that frequency. The Skardu log indicates that at 0620LT, Skardu asked Gilgit to listen out for the aircraft and advise it to change over to 5514 kcs. Subsequently, the aircraft called Skardu at 0630LT on 5514 kcs. No further communication with the aircraft was recorded.
Accident Location and Wreckage
The aircraft was later found to have struck the northern side of a ridge at an elevation of 13,100 feet, just inside Pakistan territory near the Pakistan-Azad Kashmir border. The impact destroyed the aircraft, and all four crew members were killed.
Investigation and Probable Cause
The official investigation concluded that the cause of the accident could not be determined with certainty.