NTSB Identification: CHI91LA194B.
The docket is stored on NTSB microfiche number 43677.
Accident occurred Sunday, June 16, 1991 in MUNDELEIN, IL
Probable Cause Approval Date: 03/24/1993
Aircraft: BOEING B75N1, registration: N4408N
Injuries: 4 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.

PILOTS OPERATING AT A PRIVATELY OWNED AIRPORT AGREED TO TAKEOFF SOUTH AND LAND NORTH DUE TO REPEATED COMPLAINTS OF A HOMEOWNER WHOSE HOUSE IS LOCATED 120 FEET FROM THE SOUTH RUNWAY'S THRESHOLD. THE PILOT OF AN ANTIQUE BIPLANE HAD ENTERED A DOWNWIND LEG FOR THE NORTH RUNWAY AND OBSERVED AN AIRPLANE SIMILAR TO HIS PREPARING FOR, WHAT HE BELIEVED WAS, A SOUTH TAKEOFF. THE PILOT STATED HE THEN OBSERVED THE AIRPLANE TAXI OFF ONTO A PARKING AREA AND THOUGHT THAT THE OTHER AIRPLANE SAW HIM AND CLEARED THE RUNWAY FOR HIS LANDING. THE PILOT CONTINUED WITH THE LANDING APPROACH. SHORTLY AFTER TOUHDOWN THE AIRPLANE COLLIDED WITH THE OTHER AIRPLANE PREVIOUSLY OBSERVED.

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

THE PILOT IN COMMAND'S NOT MAINTAINING VISUAL CONTACT WITH THE PREVIOUSLY IDENTIFIED AIRPLANE.

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