Regional Jet 900 (CRJ900)
Flight Crew Air Transport Pilot (ATP)
Situational Awareness
Aircraft Equipment Problem Less Severe
Flight Crew Landed As Precaution; Flight Crew Diverted; Flight Crew Overcame Equipment Problem
Aircraft
We had a brake overheat warning at rotation. We leveled off at 5;000 ft. and completed the emergency checklist. The warning cleared after lowering the gear and resetting the BTMS. I sent both maintenance and dispatch a text letting them know what had happened. About 15-20 minutes later at 39;000 ft. another warning message posted. It was the same brake; the LHOB. The reading indicated in the red and stayed there. We referenced the emergency checklist again which requires lowering the gear. We descended to a safe altitude to slow to 220 knots and completed the procedure. The BTMS showed in the red until the gear was lowered (once the gear was extended the indictor showed a decrease and remained in the green); which took a few minutes to coordinate a normal descent and lose over 20;000 ft. During the descent I contacted dispatch and let them know what was going on. I told them I thought a diversion was in order in lieu of any other suggestions from them (mainly due to fuel). They agreed and we arrived about 20 minutes later. After landing the message posted again and the LHOB indicator showed red and then an amber dashed line (dashed lines were not present in flight).
CRJ900 Captain experiences a brake overheat warning at rotation. The aircraft is leveled at 5;000 feet and the gear is extended to cool the brake; before continuing the climb to FL390. At FL390 the same brake indicates an overheat and the crew elects to descend to extend the landing gear then divert to a suitable airport.