2011-06 · NASA ASRS report 955007
B737 Captain reports rejecting the takeoff at 110 KTS when a door warning master caution light illuminates. The door handle apparently moved slightly when the aircraft rolled over a bump during takeoff.
During Bleeds-off takeoff roll; Master Caution light came on at approximately 80 KTS. First Officer made call outs. Captain elected to reject takeoff. Used RTO auto brakes and thrust reverser's. [We] achieved maximum speed of 110 KTS. [We] followed QRH brake cooling chart and consulted Dispatcher and Operations. [We] secured the aft entry door which had activated the master caution light. Parked in runup area for approximately one hour while Fire Chief confirmed brakes and tires were not too hot and no smoke or fire. Returned to gate; Maintenance rechecked tires and brakes; continued flight. Aft entry caution light annunciated during a bump on takeoff roll moving approximately 3/8 inch from full closed position therefore activating master caution light. B Flight Attendant said that that door had not been open during ground time. She had not touched the handle on that leg of the flight. Therefore I suggest all Boeing 737 doors be checked for tolerance limits and tightness (so that handle cannot move on its own) and flight attendants be required to physically touch/confirm all door handles are full closed on each leg.
We elected to wait until both brakes and tires had cooled before we returned to the gate; about one hour later. Contract Maintenance met us at the gate to further inspect the tires and brakes. After his inspection and the lengthy cooling period of the brakes and tires; the Captain; Maintenance Control and Contract Maintenance determined it was safe to continue.
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Source: NASA Aviation Safety Reporting System (public domain). Reports are voluntary submissions and are not verified by NASA.
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