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NTSB Report
September 25, 1984 · Cessna T207A · N75870
Mexican Hat, UT
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 25, 1984
Injury Outcomes
No injuries (4 uninjured)
Location
Mexican Hat, UT
Aircraft
Cessna T207A
Tail Number
N75870
Operator
Air Nevada
Injuries
None
Aircraft Damage
Substantial
NTSB Number
DEN84LA299
PLT STATED AFTER ACCIDENT THAT WHILE ON FINAL APPROACH WITH ENG PWR REDUCED FOR LANDING, THE ACFT BEGAN TO DESCEND BELOW THE DESIRED GLIDEPATH. WHEN THE THROTTLE WAS ADVANCED THERE WAS NO ADDED THRUST. AN IN-FLIGHT RESTART WAS UNSUCCESFUL. THE ACFT LANDED SHORT OF THE RUNWAY AN COLLIDED WITH A DIRT EMBANKMENT. POST CRASH FUNCTIONAL TEST OF THE ENG REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION OR FAILURE THAT WOULD PRECLUDE NORMAL ENG OPERATION. THE ENG DID FAIL WHEN THE MIXTURE CONTROL WAS SET FOR SMOOTH ENG OPERATION, THE BOOST PUMP WAS IN THE OFF POSITION AND THE THROTTLE RAPIDLY ADVANCED FROM A LOW PWR SETTING TO FULL PWR.
Full Narrative
PLT STATED AFTER ACCIDENT THAT WHILE ON FINAL APPROACH WITH ENG PWR REDUCED FOR LANDING, THE ACFT BEGAN TO DESCEND BELOW THE DESIRED GLIDEPATH. WHEN THE THROTTLE WAS ADVANCED THERE WAS NO ADDED THRUST. AN IN-FLIGHT RESTART WAS UNSUCCESFUL. THE ACFT LANDED SHORT OF THE RUNWAY AN COLLIDED WITH A DIRT EMBANKMENT. POST CRASH FUNCTIONAL TEST OF THE ENG REVEALED NO EVIDENCE OF A MECHANICAL MALFUNCTION OR FAILURE THAT WOULD PRECLUDE NORMAL ENG OPERATION. THE ENG DID FAIL WHEN THE MIXTURE CONTROL WAS SET FOR SMOOTH ENG OPERATION, THE BOOST PUMP WAS IN THE OFF POSITION AND THE THROTTLE RAPIDLY ADVANCED FROM A LOW PWR SETTING TO FULL PWR.
Flight
Event TypeAccident
Event Time12:30 MDT
Nearest AirportOLJATO (5nm)
Runway0
Runway Length0
Runway Width0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna T207A
Tail NumberN75870
Aircraft CategoryAir
DamageSubstantial
OperatorAir Nevada
Operating RulePart 135
Engines1
Engine TypeReciprocating
Engine DetailsContinental · TSIO-250-M · Reciprocating · 310
Seats8
People & Injuries
Injury SummaryNo injuries (4 uninjured)
Fatal0
Serious0
Minor0
Uninjured4
Total4
Crew 1Age 32 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind50° @ 5 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point61 F / 18 C
Altimeter30.00 inHg
Observation Time16:46
Weather SourceWFAC