Sep 11, 1993
Accident
Substantial SONOMA, CA
Injuries2 serious
Phase of Flight-
ConditionsVMC
OperationFAR 091
Probable Cause
the airport management's failure to provide notice of the banner operation and to close the runway. An additional cause was the banner operator's failure to ensure that the runway on which he placed his banner equipment was closed.
NTSB LAX93LA349