The NTSB says a Lockheed 12A Junior Electra that crashed on June 15 in Chino, California, took off with full flaps despite warnings from ground crew. The vintage twin was taking part in a Father's Day event, and the flight was a rehearsal for a three-plane formation during the display later in the day. "During the engine start, the ground crew warned the flight crew with hand and arm signals that the flaps were extended," the preliminary report says. "From the ground crews experience and observations with the accident airplane, they felt that the flaps were fully extended during taxi and the takeoff on runway 26R."
This is a companion discussion topic for the original entry at https://www.avweb.com/aviation-news/ntsb-chino-electra-took-off-with-full-flaps