Why does my Aspen Avionics Display have ALTIMETER, AIRSPEED, VSI FAIL (RED-X)?
- EErica WardAug 21, 2025
If your Aspen Avionics Display shows 'ALTIMETER, AIRSPEED, VSI FAIL (RED-X),' the possible causes include: * **Insufficient warm-up time:** If the air data sensor hasn't warmed up enough, especially in cold temperatures (below -20ºC), allow up to 20 minutes for the flags to clear. * **Reversed pitot/static lines:** Ensure the pitot line is connected to the “P” port and the static line to the “S” port on the EFD. * **Failed air data sensor:** The EFD may need repair or replacement.