Which options list the common errors when cross checking?

• A. Fixation only
• B. Omission only
• C. Misinterpretation
• D. Fixation and omission

Answer: (D)

The main idea is that cross-checking requires a continuous, broad scan of all flight instruments. The two most common errors you’ll encounter are fixation and omission. Fixation happens when you lock your attention on a single instrument or reading and neglect the others, so you don’t notice drift or discrepancies elsewhere. Omission occurs when you fail to complete the scan or skip checking one or more required instruments during a procedure, leaving gaps in your situational picture. These often occur together: once you’re fixated on one cue, you’re more likely to omit parts of the scan, increasing the chance you miss important information.

Misinterpretation can happen, but it’s not as central to cross-check failures as fixation and omission, and the combination of fixation and omission best reflects the common cross-checking errors.