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NTSB Report
May 1, 1991 · Cessna 421 · N18DF
Englewood, CO
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 1, 1991
Injury Outcomes
1 injury (1 minor injury), 4 uninjured
Location
Englewood, CO
Aircraft
Cessna 421
Tail Number
N18DF
Operator
Executive Airmotive
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
DEN91LA066
DURING INITIAL CLIMB AFTER TAKEOFF FROM A HIGH ALTITUDE AIRPORT AND AT A GROSS WEIGHT 70 POUNDS BELOW MAXIMUM, BOTH ENGINE LOST INPUT TO THEIR TURBOCHARGERS DUE TO EXHAUST SYSTEM FAILURE. AT THE REDUCED POWER AVAILABLE, THE PILOT WAS UNABLE TO RETURN TO THE AIRPORT AND CONDUCTED AN EMERGENCY LANDING IN A FIELD. THE TERRAIN WAS ROLLING, SOFT, AND THE LANDING GEAR COLLAPSED DURING LANDING ROLL. THE ENGINE NACELLES AND UNDERSIDE OF THE AIRCRAFT WERE DAMAGED AS THE AIRCRAFT SLID DURING THE FINAL PHASE OF DECELERATION.
NTSB Probable Cause
POWER LOSS ON BOTH ENGINES AS A RESULT OF EXHAUST SYSTEM FAILURE.
Full Narrative
DURING INITIAL CLIMB AFTER TAKEOFF FROM A HIGH ALTITUDE AIRPORT AND AT A GROSS WEIGHT 70 POUNDS BELOW MAXIMUM, BOTH ENGINE LOST INPUT TO THEIR TURBOCHARGERS DUE TO EXHAUST SYSTEM FAILURE. AT THE REDUCED POWER AVAILABLE, THE PILOT WAS UNABLE TO RETURN TO THE AIRPORT AND CONDUCTED AN EMERGENCY LANDING IN A FIELD. THE TERRAIN WAS ROLLING, SOFT, AND THE LANDING GEAR COLLAPSED DURING LANDING ROLL. THE ENGINE NACELLES AND UNDERSIDE OF THE AIRCRAFT WERE DAMAGED AS THE AIRCRAFT SLID DURING THE FINAL PHASE OF DECELERATION.
Flight
Event TypeAccident
Event Time06:00 MDT
Nearest AirportCentennial (0nm N)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 421
Tail NumberN18DF
Aircraft CategoryAir
DamageSubstantial
OperatorExecutive Airmotive
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsContinental · GTSIO-5200 · Reciprocating · 375
Seats6
People & Injuries
Injury Summary1 injury (1 minor injury), 4 uninjured
Fatal0
Serious0
Minor1
Uninjured4
Total5
Crew 1Age 39 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind190° @ 4 kt
Visibility50 sm
CeilingNone
Temperature / Dew Point0 C / 0 C
Altimeter0
Observation Time11:45
Weather SourceWFAC