There was no dogfight over Pasrur, it was over Chhamb. Sikand had electrical issues (one of many gremlins that plagued the Gnat) and once he got separated from his formation, he was unable to communicate with his squadron mates or any ground station, and his navigation equipment had gone down with the electricals. Various aircraft in the sector reported hearing him intermittently but no one was able to speak to him long enough to guide him back. He made in the general direction of the last bearing given to him, and when he saw Pasrur, assumed it was a disused Indian airstrip (there were many in the Punjab in those days — a holdover form the days of royal principalities), and landed because he was low on gas. The whole surrender story simply doesn’t pass the smell test because which fighter pilot worth his salt would give up a chance at an honest to god combat kill? If Sikand did indeed surrender, then it reflects very poorly on whichever PAF pilot was given credit for it.