NTSB Identification: CHI91LA173.
The docket is stored on NTSB microfiche number 44076.
Accident occurred Tuesday, May 28, 1991 in EVANSVILLE, IN
Probable Cause Approval Date: 03/31/1993
Aircraft: GULFSTREAM AMERICAN AA1A, registration: N5675L
Injuries: 2 Serious.

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

THE SINGLE ENGINE AIRPLANE DEPARTED ON ITS FIRST FLIGHT AFTER MAINTENANCE INVOLVING REPLACEMENT OF A CYLINDER. PASSING 200 FEET ON CLIMBOUT, THE PILOT IN COMMAND OBSERVED ENGINE RPM AND POWER DECREASING. UNABLE TO RETURN TO THE FIELD, THE PILOT EXECUTED AN OFF AIRPORT FORCED LANDING. ENGINE EXAMINATION AFTER THE ACCIDENT REVEALED A USED CYLINDER WITH A STANDARD SIZE BORE HAD BEEN INSTALLED AS A REPLACEMENT. THE REMAINING CYLINDERS AND ALL PISTONS WERE 0.010 INCH OVERSIZE.

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

THE FAILURE BY MAINTENANCE PERSONNEL TO IDENTIFY THE PROPER REPLACEMENT CYLINDER.

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