A QantasLink Dash 8 crew failed to retract the landing gear after take-off and only realised when a member of the cabin crew flagged the error, a report by the Australian Transport Safety Bureau (ATSB) has found.
Later during the climb, the first officer spoke over the PA system and following this, the cabin crew contacted the flight deck to ask if it was normal for the landing gear to still be extended at this time.
https://www.key.aero/article/cabin-crew ... wn-15000ftWhile believing they had not exceeded any operating limits for the gear, the pilots retracted the system at 15,900ft, which was above the 15,000-foot altitude limit for flight with gear extended.
https://www.atsb.gov.au/media/5780949/a ... inal-1.pdf