PIA Boeing 777-200ER aircraft registration AP-BGJ as flight PK8292 is transporting stranded passengers of PK714 from Muscat to Islamabad.

Source:
flightradar24.com
Earlier, AP-BGJ arrived in Muscat as ferry flight PK8225 from Karachi. Most likely it also carried PIA Engineering team with tools and spare parts to bring Boeing 777 registration AP-BHV grounded in Muscat back into service.

Source:
flightradar24.com
On March 6, PIA ATR 42-500 aircraft registration AP-BHI also performed Karachi to Muscat flight PK6225 on March 6. The aircraft left Karachi at 7:16 PM and arrived in Muscat at 8:48 PM. Karachi to Muscat flight completed in 2 hours & 32 minutes. The aircraft carried PIA Engineering team with tools and spare parts to repair Boeing 777 registration AP-BHV grounded in Muscat.

Source:
flightradar24.com
On March 7, AP-BHI left Muscat at 12:36 PM as flight PK6226 to Karachi with 40 stranded passengers of flight PK714. The ATR stayed in Muscat for about 16 hours.

Source:
flightradar24.com
Abbas