What action should be taken if the aircraft's altitude differs significantly from reported altitudes?

When there is a significant difference between the aircraft's actual altitude and the reported altitude, it is crucial to immediately advise the pilot of this discrepancy. This action is vital for maintaining safety and situational awareness in flight operations.

By informing the pilot of the significant altitude difference, appropriate measures can be taken to assess and address the situation. The pilot may need to verify the altitude using onboard instruments or adjust their flight path to ensure safe separation from other aircraft and terrain. Prompt communication helps prevent potential conflicts and enhances overall safety in the airspace.

In scenarios involving significant altitude discrepancies, timely communication can also facilitate coordination with air traffic control and other relevant authorities, thereby ensuring that all parties are aware of the aircraft's true position. This proactive approach is essential in aviation to mitigate risks and promote safe operations.