Daniel S Taylor SONERAI II LS N148DT

Summary

On 21 October 1990 at about 22:05 local time, a Daniel S Taylor SONERAI II LS registered N148DT, operated by Olesen, James T., was involved in an accident near Prattville, Alabama, United States. One person was on board and one died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

21 October 1990 at 22:05

Classification

Accident

Location

Prattville, Alabama, United States

Nearest airport

Autauga County (IA1)

Coordinates

32.5103, -86.5595

Aircraft

Daniel S Taylor SONERAI II LS

Registration

N148DT

Category

Airplane

Engines

1

Operator

Olesen, James T.

Operating rule

Part 91: General Aviation

Purpose of flight

Unknown

Phase of flight

Not recorded

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

MIA91FA014

1 person died.

THE PILOT'S FAILURE TO MAINTAIN AIRSPEED. FACTORS WERE UNDETERMINED LOSS OF ENGINE POWER AND LACK OF EXPERIENCE IN TYPE.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

DURING THE PREVIOUS 4 MOS, THE ENG WAS EXPERIENCING A HOTTER CYLINDER HEAD TEMP OF THE LT REAR CYLINDER THAN THE RT. THE ENG COWLING WAS MODIFIED TO CORRECT THIS BUT THE PROBLEM CONTINUED. THE CYLINDER HEADS WHICH WERE PREVIOUSLY REMOVED WERE INSTALLED THE DAY BEFORE THE ACCIDENT. THE ENG WAS RUN FOR 30 MINUTES WITH NO DISCREPANCIES NOTED. THE MORNING OF THE ACCIDENT, THE ACFT WAS SERVICED WITH FUEL, THE ENG WAS CHECKED, & THE ACFT WAS FLOWN TWICE AROUND THE TRAFFIC PATTERN. THE TEMP PROBLEM CONTINUED. ATTEMPTS TO CORRECT THIS WERE UNSUCCESSFUL DURING A SUBSEQUENT FLT AROUND THE PATTERN. THE RT SIDE OF THE COWLING WAS MODIFIED. THE FLT DEPARTED & AT AN ALT OF 500 FT, THE ACFT WAS OBSERVED IN AN UNCOORDINATED LT TURN. THE ACFT STALLED, DESCENDED LT WING LOW & CRASHED IN A FIELD. EXAM OF THE ACFT REVEALED NO FLT CONTROL MALFUNCTION. EXAM OF THE ENG REVEALED EVIDENCE OF A LEAN FUEL/AIR MIXTURE BUT THE REASON COULD NOT BE DETERMINED.

Quoted verbatim from the NTSB record.