Officer Lindenberg was killed when the Helicopter he was training in lost power and crashed while landing. Officer Lindenberg was flying in a Bell 47-G5 helicopter and was practicing simulated urban high-rise rooftop landings by an off-site pad on top of a small mountain near the Los Angeles Zoo in the hills above Hollywood. On short final approach, the engine lost power and the helicopter impacted 4-inches short of the pad. The Helicopter rolled down the mountain side 162 feet, exploding in a ball of fire. Officer Lindenberg was killed and another officer was seriously injured.
Officer Lindenberg had been with the Department for seven years and was survived by his wife and seven-month old daughter.