How long should you wait before reminding ATC you are still holding on the runway?

The recommended wait time before reminding Air Traffic Control (ATC) that you are still holding on the runway is 90 seconds. This duration is based on standard operational procedures and practices within aviation communications.

ATC personnel are responsible for managing multiple aircraft and may inadvertently overlook a situation where an aircraft is still on the runway. The 90-second guideline allows a reasonable amount of time for ATC to manage their workflow and respond to other aircraft while also ensuring that you are not left waiting indefinitely. If after 90 seconds you have not received any further instructions or communications, it is appropriate to remind ATC of your position.

This wait time balances the need for effective communication with the understanding that ATC may be busy. By adhering to this recommended timeframe, pilots help maintain efficient operations and reduce the potential for miscommunication or delays in clearance.