The Mosby accident FH1100 mentions is startling, especially the final 5 seconds- quoting from the NTSB report
http://www.ntsb.gov/doclib/reports/2013/AAR1302.pdf:
"The pilot’s awareness of the helicopter’s low fuel status and the near zero indication on the fuel gauge as the flight continued should have given the pilot ample warning of the impending engine failure and provided him with the opportunity to prepare to execute an autorotation. However, it was evident from the
helicopter’s impact in a 40° nose-down attitude, on a heading nearly opposite to the direction of travel, at a high rate of descent, and with a low rotor rpm that the pilot did not successfully execute an autorotation following the loss of engine power."