No cause determined yet
The NTSB has released initial factual information about the Flight Options Beechjet 400A that suffered a dual engine flameout on Nov.

The NTSB has released initial factual information about the Flight Options Beechjet 400A that suffered a dual engine flameout on Nov. 28, 2005. The investigation is ongoing and the Safety Board has not yet determined a probable cause of the accident.

On a positioning flight from Indianapolis to Marcos Island, Fla., cruising at FL380, the fractional jet, N691TA, lost both engines when the crew reduced power after being cleared to descend to FL330. After starting the descent, the two ATP-rated pilots, the only occupants of the airplane, heard a loud pop from the right engine, then one from the left. The engine indicators “quickly rolled back.” They put on their oxygen masks (the captain reported later that his kept sliding up) and declared an emergency.