Originally Posted by S Steve
BOAC
Perhaps DG stands for Directional Gyro?
I'm very familiar with a 'DG' - 44 years or more! That's the one that spins 'up and away' from you so that if it comes off its bearings it won't smack you in the ...............
It is the DG in an inertial display I am stuck on. Do we assume:
a) The prof is wrong
b) the ATA is wrong
c) you and I are wrong?
I think the ISIS message is because it lost valid inputs from its Air Data sources. These come from the Standby system ADMs (Air Data Modules that convert pitot and static to digital close to the probes/ports)
- absolutely, but why the ATA 'gyro' reference? Are there pitch/bank limits to the system?