Lockheed 12A accident near Chino, CA

On June 15, 2024, a Lockheed 12A (airplane) was involved in an accident near Chino, CA. 2 people died. Damage to the aircraft: substantial.

Date

June 15, 2024

Place

Chino, CA

Aircraft

Lockheed 12A · Airplane

Injuries

2 fatal, 0 serious, 0 minor

Damage

Substantial

Position

33.975°N, 117.648°W

NTSB ID

20240615194475

Official records · WPR24FA196

• Public docket: reports, statements and exhibits from the investigation

NTSB summary

HISTORY OF FLIGHTOn June 15, 2024, about 1236 Pacific daylight time, a Lockheed 12A airplane, N93R, was substantially damaged when it was involved in an accident near Chino, California. The pilot and co-pilot were fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight. The operator reported that the museum was hosting a Father’s Day event that included a three-airplane formation flight later on during the day. The accident flight was conducted in preparation for the planned formation flight. During a morning briefing, the operator assigned a pilot and co-pilot to each airplane. According to the operator’s representative, he believed that the co-pilot lowered the flaps as part of a functional test during the preflight inspection. During engine start, the ground crew warned the flight crew using hand and arm signals that the flaps were extended; however, the flight crew did not acknowledge the warning. Based on his experience with and observations of the accident airplane, the operator’s representative believe that the flaps were fully extended during the taxi and takeoff roll. The operator’s representative reported that flight crews commonly reduced engine rpm during takeoff to keep the engine oil temperatures lower on hot days and reduce propeller and engine noise. Witnesses at the airport observed the accident airplane taxi to the runway and take off with the flaps extended. One witness reported that the airplane departed the runway with the flaps fully extended and appeared to be moving extremely slowly. He observed th

Probable cause

The pilot’s exceedance of the airplane’s critical angle of attack during the initial climb, which resulted in an aerodynamic stall at an altitude insufficient for recovery. Contributing to the accident was the pilot’s failure to ensure that the airplane was properly configured for takeoff.

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Source: NTSB aviation accident database (US government, public domain). Findings may be preliminary or later revised by the NTSB. Not a complete global record.