Oman Air 787 A4O-SC first flight

Oman Air 787-9 A4O-SC msn 37168 ln 529 first flight Jan31 from PAE as BOE529, hex 70C0EE.  Acft was in full livery as A4O-SC.

Used line # digits as callsign probably to avoid ATC confusion as its correct callsign should have been BOE738.  Leased from CIT Leasing.