Serious incident to the Airbus A320 registered AP-BOV operated by Fly Jinnah on 24/05/2024 at Lahore International (PAKISTAN)

Preliminary data based on the notification from the local authorities:

Aircraft stopped climb at FL80 due pressurization indication but later requested climb and reported that issue resolved, aircraft was given climb to FL360. While crossing FL230 approximately, both captain and first officer felt dizzy and drowsy with a feeling of not being active. Immediately, then both the crew members used oxygen masks. LCC was fainted and gained consciousness after administration of oxygen. Other cabin crew was also not feeling comfortable. At 100NM from Lahore at FL270 airraft requested descend and diversion back to Lahore due pressuritzation problem.