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NTSB Report
August 17, 1984 · Piper PA-28R-200 · N2841T
La Salle, IL
Overview
Report Status
Preliminary report
Event Type
Accident
Date
August 17, 1984
Injury Outcomes
1 injury (1 minor injury)
Location
La Salle, IL
Aircraft
Piper PA-28R-200
Tail Number
N2841T
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
CHI84LA355
THE ACFT MADE A FORCED LANDING IN A CORN FIELD AFTER A POWER LOSS. THE PLT SAID THAT THE ENGINE SEEMED TO BE RUNNING ROUGH AT START-UP. AFTER LEANING AND A RUN-UP IT SMOOTHED OUT. TWENTY MINUTES AFTER TAKEOFF THE ENGINE STARTED VIBRATINGAND THE EGT WENT UP TO 1379 DEGREES. THE MIXTURE WAS ENRICHED AND THE EGT DROPPED TO 1349 DEGREES BUT THE VIBRATION INCREASED. THE PLT REDUCED POWER BUT #1 CYLINDER BLEW OFF AND PENETRATED THE COWLING. THE PILOT SHUT THE ENGINE DOWN ANDLANDED. INESTIGATION SHOWED THAT THE CRANKCASE HALVES WERE NOT FASTENED TOGETHER SECURELY. THE HOLD DOWN NUTS ON #3 AND #4 CYLINDERS WERE TORQUED TO 35 FOOT LBS. THE REQUIRED PRESSURE IS 55 FOOT LBS. THIS ENGINE CRANKCASE WAS REPLACED AT 1137 HOURS. THE LAST OVERHAUL WAS AT 3969 HOURS. THE LAST ANNUAL WAS AT 4393 HOURS.
Full Narrative
THE ACFT MADE A FORCED LANDING IN A CORN FIELD AFTER A POWER LOSS. THE PLT SAID THAT THE ENGINE SEEMED TO BE RUNNING ROUGH AT START-UP. AFTER LEANING AND A RUN-UP IT SMOOTHED OUT. TWENTY MINUTES AFTER TAKEOFF THE ENGINE STARTED VIBRATINGAND THE EGT WENT UP TO 1379 DEGREES. THE MIXTURE WAS ENRICHED AND THE EGT DROPPED TO 1349 DEGREES BUT THE VIBRATION INCREASED. THE PLT REDUCED POWER BUT #1 CYLINDER BLEW OFF AND PENETRATED THE COWLING. THE PILOT SHUT THE ENGINE DOWN ANDLANDED. INESTIGATION SHOWED THAT THE CRANKCASE HALVES WERE NOT FASTENED TOGETHER SECURELY. THE HOLD DOWN NUTS ON #3 AND #4 CYLINDERS WERE TORQUED TO 35 FOOT LBS. THE REQUIRED PRESSURE IS 55 FOOT LBS. THIS ENGINE CRANKCASE WAS REPLACED AT 1137 HOURS. THE LAST OVERHAUL WAS AT 3969 HOURS. THE LAST ANNUAL WAS AT 4393 HOURS.
Flight
Event TypeAccident
Event Time18:30 CDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28R-200
Tail NumberN2841T
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-C1C · Reciprocating · 200
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 41 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility7 sm
CeilingOvercast 20000 ft
Temperature / Dew Point70 F
Altimeter29.00 inHg
Observation Time22:50
Weather SourceWFAC