QR905/QTR28N has finished fuel dump, requests 30 minutes more holding to burn fuel. Descending to 6000 feet.
After takeoff QTR28N reported a 'gear retraction problem' to ATC at the beginning of this clip:
https://archive-server.liveatc.net/y...2020-1130Z.mp3
LiveATC audio:
https://www.liveatc.net/hlisten.php?...mml3&icao=ymml
FR24:
https://www.flightradar24.com/QTR28N/23cbfcc2