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NTSB Report
March 6, 1985 · Mooney M20F · N6399Q
Rock Hill, SC
Overview
Report Status
Preliminary report
Event Type
Accident
Date
March 6, 1985
Injury Outcomes
1 injury (1 minor injury)
Location
Rock Hill, SC
Aircraft
Mooney M20F
Tail Number
N6399Q
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ATL85LA110
DURING A VFR FLT, THE PLT REPORTED A SEVERE VIBRATION IN THE AIRFRAME. PWR WAS REDUCED IN AN ATTEMPT TO LESSEN THE VIBRATION AND SHORTLY THEREAFTER, A TOTAL LOSS OF PWR WAS EXPERIENCED AND THE PLT ESTABLISHED A GLIDE TO THE NEAREST LANDING AREA. DURING THE APCH, THE PLT STATED, THE AIRSPEED WAS EXCESSIVE AND HE OVERSHOT THE INTENDED LANDING AREA RESULTING IN A COLLISION WITH TREES. EXAMINATION OF THE ENG DISCLOSED THE CRANKSHAFT HAD FAILED. LAB ANALYSIS OF THE SHAFT INDICATED THE FRACTURE WAS A FATIGUE FAILURE.
Full Narrative
DURING A VFR FLT, THE PLT REPORTED A SEVERE VIBRATION IN THE AIRFRAME. PWR WAS REDUCED IN AN ATTEMPT TO LESSEN THE VIBRATION AND SHORTLY THEREAFTER, A TOTAL LOSS OF PWR WAS EXPERIENCED AND THE PLT ESTABLISHED A GLIDE TO THE NEAREST LANDING AREA. DURING THE APCH, THE PLT STATED, THE AIRSPEED WAS EXCESSIVE AND HE OVERSHOT THE INTENDED LANDING AREA RESULTING IN A COLLISION WITH TREES. EXAMINATION OF THE ENG DISCLOSED THE CRANKSHAFT HAD FAILED. LAB ANALYSIS OF THE SHAFT INDICATED THE FRACTURE WAS A FATIGUE FAILURE.
Flight
Event TypeAccident
Event Time18:30 EST
Nearest Airport5nm S
Runway0
Runway Length0
Runway Width0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20F
Tail NumberN6399Q
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · IO-360-A1A · Reciprocating · 280
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 32 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind70° @ 7 kt
Visibility30 sm
CeilingNone
Temperature / Dew Point50 / 21 C
Altimeter30.00 inHg
Observation Time00:00
Weather SourceWFAC