AI B1Bomber won't climb or respond

[Speedbyrd 0]

One of my B1 Bomber AI flights from KHMN-PMDY doesn't do too well. It seems to lose its response capabilities to ATC direction. She's supposed to climb to FL 270 but instead gradually LOSES altitude and doesn't do a readback. Any feedback on possible cause appreciated. Other B1B flights seem to do ok. This is from the MAIW collection. Thanks

[Opa 6]

Have you decompiled the traffic file and checked to see if the problem aircraft is different from whatever is being used on non-problematic flights?If that is the case, you can substitute a known "good" aircraft and see if that corrects the problem.It is possible the aircraft.cfg and/or air file for that particular aircraft is the culprit.Hope this is helpful.