ThirdSeatHero
Veteran
That was GO! Airlines (Mesa) from Honolulu. They were flying the 214 miles from HNL to Hilo I believe and overshot Hilo by 15 miles at 21,000 feet. The tower was able to get through to them finally by yelling loudly into the mike and they finally responded.
It was believed that they fell asleep but I don't think it was ever proven, it would be hard to prove but it seems plausible. There is a small piece about it in the latest issue of Reader's Digest, as well as some quite telling information from pilots and others in the business. RD did a well rounded piece, though they could have delved deeper, they are after all, a digest.
You can get a bit of the Reader's Digest article at that link called The 411 of Flight Delays.
Have a great weekend everybody!
The NTSB confirmed the pilots were indeed sleeping.