Highly unstable at 5nm and 3500 ft with over speed alarm going. They decided to Go Around, due to high speed did a TOGA TAP, retracted the gear and like JETSTAR in 2007
https://www.atsb.gov.au/publications...-2007-044.aspx
continued descent with Gear selected up on the Glideslope, Jetstar got to 38ft above runway before aircraft climbed away. In the PIA case they impacted the runway before climbing away causing severe engine damage which subsequently caused failure of both. That’s my guess.