08:14 AM EDT, 05/16/2025 (MT Newswires) -- Amazon.com's ( AMZN ) two package delivery drones had faulty readings from lidar sensors that made them fall to the ground during a December test, Bloomberg reported Friday, citing documents from the US National Transportation Safety Board.

The incorrect readings prompted the software to cut power to the propellers, which resulted in the twin crashes, the report added, citing the documents Bloomberg viewed.

The Prime Air drones were carrying out a test at a dummy residence at the tech giant's Oregon testing range, the report said.

Amazon ( AMZN ) halted its drone delivery testing program after the crashes to amend the aircraft software but said the crashes were not the main reason for pausing the plan, the news outlet said.

Amazon ( AMZN ) did not immediately respond to MT Newswires' request for comment.

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