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NTSB Report
September 4, 1983 · Mooney M20C · N4057N
Bloomfield, IA
Overview
Report Status
Preliminary report
Event Type
Accident
Date
September 4, 1983
Injury Outcomes
No injuries (3 uninjured)
Location
Bloomfield, IA
Aircraft
Mooney M20C
Tail Number
N4057N
Injuries
None
Aircraft Damage
Substantial
NTSB Number
MKC83LA211
WHILE EN ROUTE, THE PLT ENCOUNTERED A PROGRESSIVE, PARTIAL POWER LOSS. AT 1ST THE ENG BEGAN RUNNING ROUGH, THEN THE MANIFOLD PRESSURE DROPPED TO 15 INCHES (18 INCHES HAD BEEN SET FOR CRUISE). HE HEARD A CLICKING NOISE & STARTED A DESCENT FROM HIS CRUISE ALT OF 8500 FT. HE BEGAN A PRECAUTIONARY LANDING. WHEN HE SAW THAT THE WIND WOULD CARRY THE ACFT BEYOND THE FIELD HE HAD SELECTED, HE USED WHAT AVAILABLE POWER HE HAD TO CROSS OVER A ROAD & A POND, AND TO AVOID A TRANSMISSION LINE. HOWEVER, HE WAS UNABLE TO AVOID A FENCE. THE PLT STATED THAT THE ACFT TORE THRU A FENCE, JUST BEFORE TOUCHDOWN. AN INVESTIGATION REVEALED THAT THE #4 EXHAUST PUSHROD WAS BENT & THE HOUSING WAS BROKEN.
Full Narrative
WHILE EN ROUTE, THE PLT ENCOUNTERED A PROGRESSIVE, PARTIAL POWER LOSS. AT 1ST THE ENG BEGAN RUNNING ROUGH, THEN THE MANIFOLD PRESSURE DROPPED TO 15 INCHES (18 INCHES HAD BEEN SET FOR CRUISE). HE HEARD A CLICKING NOISE & STARTED A DESCENT FROM HIS CRUISE ALT OF 8500 FT. HE BEGAN A PRECAUTIONARY LANDING. WHEN HE SAW THAT THE WIND WOULD CARRY THE ACFT BEYOND THE FIELD HE HAD SELECTED, HE USED WHAT AVAILABLE POWER HE HAD TO CROSS OVER A ROAD & A POND, AND TO AVOID A TRANSMISSION LINE. HOWEVER, HE WAS UNABLE TO AVOID A FENCE. THE PLT STATED THAT THE ACFT TORE THRU A FENCE, JUST BEFORE TOUCHDOWN. AN INVESTIGATION REVEALED THAT THE #4 EXHAUST PUSHROD WAS BENT & THE HOUSING WAS BROKEN.
Flight
Event TypeAccident
Event Time12:20 CDT
Nearest Airport12nm ESE
Runway0
Flight Plan FiledVFR
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftMooney M20C
Tail NumberN4057N
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A1D · Reciprocating · 180
Seats4
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 30 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind220° @ 12 kt
Visibility7 sm
CeilingNone
Temperature / Dew Point61 F
Altimeter29.00 inHg
Observation Time19:00
Weather SourceWFAC