Serious incident to the Airbus A320 registered AP-BLB operated by PIA on 22/05/2025 en route (Pakistan)

Preliminary data based on the notification from the Pakistanese authorities:

At time 1702 LT position abeam RK at FL340 pilot reported navigation problem and FMS failure and requested diversion to Karachi. at time 1720 LT position NH pilot requested priority landing that was given.

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General information
Local date	22/05/2025
Responsible entity	Pakistan - PAAIB
State or area of occurrence	Pakistan
Location	En route, FL 340
Human consequences	None
Aircraft consequences	None
Occurrence class	Serious incident
File number	BEA2025-0204

Flight Information
Aircraft category	Aeroplane - Large aeroplane
Operator	Pakistan - Pakistan International Airlines Corporation (Pia)
Manufacturer / Model	AIRBUS - A320
Aircraft Registration	AP-BLB
State of registry	Pakistan
Last departure point	Pakistan - OPLA (LHE) : Lahore (Civil/Paf)
Planned destination	United Arab Emirates - OMDB (DXB) : Dubai/Intl
Flight phase	En route
Serial number	2155
Operator Type AG
Operation Type	Commercial Air Transport - Passenger - Airline

BEA is the French air safety investigation authority for civil aviation. The sole objective of the investigation is to improve air safety. It is intended neither to apportion blame nor to assess responsiblity.