Unlikely and BOTH of them? Flight engineers disappeared in the 80's, that's 40 years ago. There's nothing for them to do in today's aeroplanes and they'd be Bored $#itless. They can also make mistakes and MISS others making them. I share the Indian Airpilots group warning against putting the Blame on the crew before it's finally assessed which may still be a while yet. The only place a High PSV would be located is after the Engine HIGH pressure pump probably in the engine fuel control unit ON the engine. Nev