What do an amber X and dashes over the fuel system display indicate?

• A. Either only the standby bus is on or the information is invalid due to a malfunction
• B. The fuel is depleted
• C. The system is in auto-feather mode
• D. The fuel quantity is within normal range

Answer: (A)

Seeing an amber X with dashes over the fuel system display means the fuel data isn’t available or is invalid. On the PC-12 NGX, this combination flags that the primary data sources aren’t providing readable numbers—often because power to the data sources is lost or the system has a fault. A common reason is that only the standby electrical bus is on, so the main fuel data cannot be displayed, leaving the readouts as dashes and marking the information as unreliable with the amber symbol.

In practice, treat the fuel readings as not trustworthy and cross-check with alternate indicators or procedures, such as confirming electrical bus status or restoring power to the main data sources if possible. This situation is not indicating normal range or a simple depletion; instead, it shows that the information cannot be relied upon at the moment.