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October 20, 1991 · Piper PA-28R-201T PA-28R-201 · N1087H
Monticello, UT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 20, 1991
Injury Outcomes
No injuries (4 uninjured)
Location
Monticello, UT
Aircraft
Piper PA-28R-201T PA-28R-201
Tail Number
N1087H
Operator
James J Blount Jr
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA92LA014
DURING CRUISE FLIGHT, ABOUT 5 MIN AFTER PASSING THE MONTICELLO AIRPORT, THE ENGINE BEGAN RUNNING ROUGH. THE PILOT REVERSED COURSE TO RETURN TO THE AIRPORT FOR A PRECAUTIONARY LANDING. AS HE WAS TURNING ONTO BASE LEG, THE ENGINE STOPPED RUNNING. SUBSEQUENTLY, THE AIRCRAFT WAS DAMAGED DURING A FORCED LANDING ABOUT 50 YARDS SHORT OF THE RUNWAY. AN EXAM OF THE ENGINE REVEALED THERE WAS NO OIL IN THE CRANKCASE, A HOLE WAS BURNED IN THE #5 PISTON FROM PRE-IGNITION/DETONATION, THERE WAS EVIDENCE OF ARCING OF THE LEFT MAG AND CONTAMINATION IN THE RIGHT MAG, AND THE FUEL SYSTEM WAS IMPROPERLY ADJUSTED. THE ACFT HAD 88 HOURS OF FLIGHT TIME, SINCE A MAJOR OVERHAUL OF THE ENGINE WAS COMPLETED ON 7/12/91.
NTSB Probable Cause
INADEQUATE MAINTENANCE/OVERHAUL OF THE ENGINE, AND SUBSEQUENT FAILURE OF THE #5 PISTON (HOLE BURNED IN PISTON), DUE TO PRE-IGNITION AND/OR DETONATION. ROUGH/UNEVEN TERRAIN IN THE EMERGENCY LANDING AREA WAS A RELATED FACTOR.
Full Narrative
DURING CRUISE FLIGHT, ABOUT 5 MIN AFTER PASSING THE MONTICELLO AIRPORT, THE ENGINE BEGAN RUNNING ROUGH. THE PILOT REVERSED COURSE TO RETURN TO THE AIRPORT FOR A PRECAUTIONARY LANDING. AS HE WAS TURNING ONTO BASE LEG, THE ENGINE STOPPED RUNNING. SUBSEQUENTLY, THE AIRCRAFT WAS DAMAGED DURING A FORCED LANDING ABOUT 50 YARDS SHORT OF THE RUNWAY. AN EXAM OF THE ENGINE REVEALED THERE WAS NO OIL IN THE CRANKCASE, A HOLE WAS BURNED IN THE #5 PISTON FROM PRE-IGNITION/DETONATION, THERE WAS EVIDENCE OF ARCING OF THE LEFT MAG AND CONTAMINATION IN THE RIGHT MAG, AND THE FUEL SYSTEM WAS IMPROPERLY ADJUSTED. THE ACFT HAD 88 HOURS OF FLIGHT TIME, SINCE A MAJOR OVERHAUL OF THE ENGINE WAS COMPLETED ON 7/12/91.
Flight
Event TypeAccident
Event Time12:00 MDT
Nearest AirportMonticello (0nm)
Runway34
Runway Length4817 ft
Runway Width75 ft
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28R-201T PA-28R-201
Tail NumberN1087H
Aircraft CategoryAir
DamageSubstantial
OperatorJames J Blount Jr
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-360-FB · Reciprocating · 200
Seats4
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 54 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind160° @ 7 kt
Visibility90 sm
CeilingNone
Temperature / Dew Point64 F / 27 C
Altimeter30.00 inHg
Observation Time17:50
Weather SourceWFAC