NTSB Identification: LAX94LA039B
Accident occurred Saturday, November 06, 1993 in HALF MOON BAY, CA
Probable Cause Approval Date: 09/20/1994
Aircraft: CESSNA 172H, registration: N2718L
Injuries: 3 Uninjured.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

A FLIGHT OF 2 STEARMANS FLEW TO A NORMALLY UNCONTROLLED AIRPORT. BEFORE FLIGHT, NEITHER HAD RECEIVED NOTAM INFO THAT THE FAA HAD A TEMPORARY CONTROL TOWER (TWR) AT THE AIRPORT. WHILE APPROACHING THE TRAFFIC PATTERN, WHICH WAS CONGESTED, THE LEAD STEARMAN PILOT CALLED UNICOM & 1ST LEARNED OF THE TWR'S EXISTENCE. THE 2ND STEARMAN PILOT WAS UNAWARE OF THE TWR; HIS AIRCRAFT WAS NOT RADIO EQUIPPED. THE LEAD STEARMAN PILOT SAID SHE TOLD TWR THEY WERE A FLIGHT OF 2. SHE LOST SIGHT OF THE 2ND STEARMAN, BUT DID NOT NOTIFY TWR. SHE GOT A LANDING CLEARANCE FOR HER AIRCRAFT & LANDED ON RUNWAY 30. THE 2ND STEARMAN PILOT LOST SIGHT OF THE LEAD STEARMAN, CONCLUDED RUNWAY 12 WAS ACTIVE & LANDED ON THAT RUNWAY. MEAN- WHILE, A CESSNA 172 WAS CLEARED TO LAND ON RUNWAY 30. ON ROLL-OUT, THE 172 PILOT SAW THE STEARMAN CONVERGING & STEARED TO THE RIGHT. SIMULTANEOUSLY, THE STEARMAN STEARED LEFT & THE 2 PLANES COLLIDED. THE CONTROLLERS DID NOT RECALL HEARING A TRANSMISSION ABOUT A FLIGHT OF 2, NOR DID THEY OBSERVE THE PLANES CONVERGING FROM OPPOSITE DIRECTIONS ON THE RUNWAY.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

IMPROPER PLANNING/DECISION BY THE PILOT OF THE SECOND STEARMAN, AND HIS SELECTION OF THE WRONG RUNWAY ON WHICH TO LAND. A FACTOR RELATED TO THE ACCIDENT WAS: FAILURE OF THE STEARMAN PILOTS TO OBTAIN PERTINENT NOTAM INFORMATION.

Full narrative available

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