Dec 1, 2011
Incident
Chicago, IL
InjuriesNone
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
The tower local controller did not ensure that the runway was clear of conflict before directing the B737 to cross the runway, and other air traffic control personnel did not effectively intervene when the separation between the two airplanes became questionable.
NTSB OPS12IA167