NTSB Identification: CHI85FEK01.
The docket is stored on NTSB microfiche number 28071.
Accident occurred Thursday, July 18, 1985 in BRYAN, OH
Aircraft: DIETZ EVANS VP-1, registration: N6267
Injuries: 2 Serious.

NTSB investigators either traveled in support of this investigation or conducted a significant amount of investigative work without any travel, and used data obtained from various sources to prepare this aircraft accident report.

THE ACFT IMPACTED THE TERRAIN IN AN UNCONTROLLED DESCENT AFTER STALLING DURING AN EMERGENCY DESCENT. THE PLT STATED THAT AT AN ALT OF 700-800 FT AGL, THE ENGINE RPM DECREASED FROM 3000 TO 2400. THE RPM CONTINUED TO DECREASE AND THE ACFT STALLED AT AN ALT OF 45-50 FT AGL. INSPECTION OF THE ACFT AND ENGINE DID NOT REVEAL ANY MECHANICAL FAILURE OR MALFUNCTION. THE ENGINE HAD UNDERGONE AN OVERHAUL PRIOR TO THIS FLT AND IT WAS NOT BENCK TESTED PRIOR TO INSTALLATION IN THE ACFT.

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

REASON FOR OCCURRENCE UNDETERMINED

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

AIRSPEED..NOT MAINTAINED..PILOT IN COMMAND

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