4189936 - Technic, Axle and Pin Connector Angled #4 - 135 degrees. Instructions for the main build missing but available at the Lego website or on the Digital Building App. Instructions for the alternate build are present.
LEGO TECHNIC: Rescue Helicopter (8068)
LEGO Technic 2-in-1: Ultralight Helicopter & Aircraft (42057), Manual, Box
Lego Technic Set 852 Airplane Helicopter Technic with OBA Instructions RARE HTF
LEGO TECHNIC PARTS 3 x Grey Helicopter Aircraft Skid Assembly / Ski - see photos
LEGO TECHNIC 10 x Dark Grey Helicopter Landing Ski Assembly with Pin Hole
