Just had a look through my logbook and can confirm that XV136 was indeed with 651 Sqn for at least 3 years. "She" was in the Province at Omagh from 30 Nov 73 to Apr 74, Long Kesh from Mar-July 75 and at Aldergrove from Aug to Dec 76.
It's very appropriate that she is now back at one of her former bases with the Ulster Aviation Society.