SAN DIEGO – The U.S. Navy has completed an investigation of a helicopter crash off the coast of San Diego that resulted in the death of five members of the aircrew, officials announced Tuesday.

On August 31, 2021 an MH-60S Seahawk helicopter from the San Diego-based USS Abraham Lincoln (CVN 72) fell into the sea in the Eastern Pacific Ocean off the coast shortly after landing aboard the ship.

The Navy completed its command investigation of the incident April 18. The investigation found that there was no evidence that the crash was caused by a pilot or aircrew error, Commander Zach Harrell said in a news release.

The crash was caused by an in-flight failure of a damper hose, resulting in a total loss of the main rotor damping, causing severe vibrations when the aircraft was touching down on deck, the investigation found.

The fallen service members were identified as:

One sailor aboard the MH-60S Knighthawk was pulled from the ocean after the aircraft went down roughly 60 nautical miles from shore and successfully rescued. Two others on the deck were injured as a result of the crash.

A redacted version of the findings can be found on the U.S. Pacific Fleet FOIA Reading Room by clicking or tapping here.