Thanks a lot,
1) So when you read GPS PRIMARY, it's GPIRS? But we do not always see it....
2) So the ADIRU uses GPS position to correct IRS position? It then calculates GPIRS position.
3) So the FG corrects each and every IRS (before calculating the IRS MIX position) with GPS, radio position or BIAS, right?
4) FMGS will use GPIRS, IRS MIX position or FMGS position to navigate. But how de we know which one is being used?
5) So what is FMGS position???? What does it use?
Thanks