Challenger 604 querie
Am wondering if anyone can help me out. On our Challenger 604 on the ground, with only APU running, all avionics up (Collins Proline 4) the TAS indication on both MFDs fluctuate between 7-10kts. Initially we thought that, with the overeading value it may affect the computed fuel burn airborne but Bombardier seems to think that it does not affect it and couldnt give any clear reason apart from saying that there is no guaranteed ADC acurracy below 100kts
Any input or similar experience would be much appreciated.
FJ01