After an overheated brake is cooled in flight by lowering the gear, how can the pilot reset the BTMS indicated system?

• A. No reset is possible; maintenance is required.
• B. Press the BTMS OVHT WARN RESET button on the landing gear panel.
• C. Reset by turning off and on the battery.
• D. Use the cockpit overhead reset switch.

Answer: (B)

When a brake overheats, the system raises a warning to protect the brakes. After the brakes have cooled (lowering the gear in flight helps speed that cooling), the approved way to clear that warning is to press the BTMS OVHT WARN RESET button on the landing gear panel. This button is the dedicated reset control for the brake temperature monitoring system, and pressing it acknowledges that the brakes have cooled and reestablishes normal operation without cycling power or using an unrelated switch.

Turning the battery off and on isn’t the correct way to reset the BTMS; it power-cycles systems and doesn’t specifically clear the overheat warning. An overhead reset switch isn’t the correct control for this system on this aircraft, and simply “no reset” isn’t allowed because there is a defined in-flight reset procedure.