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NTSB Report
September 15, 1988 · Cessna 206 · N71001
Glade Park, CO
Overview
Report Status
Probable Cause
Event Type
Incident
Date
September 15, 1988
Injury Outcomes
No injuries (2 uninjured)
Location
Glade Park, CO
Aircraft
Cessna 206
Tail Number
N71001
Operator
Red Tail Aviation
Injuries
None
NTSB Number
DEN88IA204
THE COMMERCIAL PLT WAS TRANSPORTING ONE PAX DURING AN AIR TAXI FLT. THE PLT REPORTED THAT THE ENGINE BEGAN TO RUN ROUGH AND LOST OIL PRESSURE. HE SAID THE ENGINE SEIZED AND HE TURNED TOWARD THE EAST FOR AN EMERGENCY LANDING, ON A PARK SERVICE ROAD. THE PLT SAID THAT THE SUN PREVENTED HIS SEEING POWER LINES ACROSS THE ROAD. ON FINAL APPROACH, THE PLANE'S MAIN LANDING GEAR STRUCK THE POWER WIRES, BUT THE PLANE LANDED WITHOUT DAMAGE. A POST ACCIDENT ENGINE EXAMINATION BY AN FAA AIRWORTHINESS INSPECTOR REVEALED EVIDENCE THAT THE #1 ROD ASSEMBLY HAD FAILED AND RESULTED IN TOTAL ENGINE STOPPAGE. THE BROKEN PARTS WERE ANALYZED BY THE NTSB MATERIALS LABORATORY. THE ANALYSIS REVEALED EVIDENCE TYPICAL OF FATIGUE FRACTURES IN THE ROD ASSEMBLY.
NTSB Probable Cause
THE FAILURE OF THE #1 CONNECTING ROD ASSEMBLY IN THE ENGINE, RESULTING IN A FORCED LANDING. A FACTOR IN THE INCIDENT WAS THAT THE PILOT DID NOT SEE & AVOID POWER WIRES IN THE FORCED LANDING PATH.
Full Narrative
THE COMMERCIAL PLT WAS TRANSPORTING ONE PAX DURING AN AIR TAXI FLT. THE PLT REPORTED THAT THE ENGINE BEGAN TO RUN ROUGH AND LOST OIL PRESSURE. HE SAID THE ENGINE SEIZED AND HE TURNED TOWARD THE EAST FOR AN EMERGENCY LANDING, ON A PARK SERVICE ROAD. THE PLT SAID THAT THE SUN PREVENTED HIS SEEING POWER LINES ACROSS THE ROAD. ON FINAL APPROACH, THE PLANE'S MAIN LANDING GEAR STRUCK THE POWER WIRES, BUT THE PLANE LANDED WITHOUT DAMAGE. A POST ACCIDENT ENGINE EXAMINATION BY AN FAA AIRWORTHINESS INSPECTOR REVEALED EVIDENCE THAT THE #1 ROD ASSEMBLY HAD FAILED AND RESULTED IN TOTAL ENGINE STOPPAGE. THE BROKEN PARTS WERE ANALYZED BY THE NTSB MATERIALS LABORATORY. THE ANALYSIS REVEALED EVIDENCE TYPICAL OF FATIGUE FRACTURES IN THE ROD ASSEMBLY.
Flight
Event TypeIncident
Event Time07:45 MDT
Nearest Airport0nm N
Runway0
Runway Length0
Runway Width0
Flight Plan FiledCvfr
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 206
Tail NumberN71001
Aircraft CategoryAir
OperatorRed Tail Aviation
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · IO-520-F9 · Reciprocating · 285
Seats6
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 43 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind90° @ 6 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point59 / 37 C
Altimeter30.00 inHg
Weather SourcePILO