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NTSB Report
February 20, 1993 · Piper PA-23-160 · N4229P
Cannonball, ND
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 20, 1993
Injury Outcomes
No injuries (3 uninjured)
Location
Cannonball, ND
Aircraft
Piper PA-23-160
Tail Number
N4229P
Operator
Hif
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI93LA093
THE PILOT STATED THAT WHILE IN CRUISE FLIGHT AT 1,000' AGL, THE LEFT ENGINE LOST POWER. HE STATED HE NOTED BLACK SMOKE COMING FROM THE EXHAUST AND HE FEATHERED THE PROPELLER. THE PILOT STATED THE AIRPLANE WOULD NOT MAINTAIN ALTITUDE AND HE DID NOT THINK HE COULD MAKE IT BACK TO AN AIRPORT, SO HE LANDED THE AIRPLANE GEAR-UP ON A RIVER BED. POST ACCIDENT INSPECTION REVEALED THE LEFT ENGINE INLET AIR FILTER WAS BLOCKED BY SNOW. THE RIGHT ENGINE FILTER WAS ALSO FOUND CONTAMINATED WITH SNOW. SPARK PLUG INSPECTION REVEALED THE ENGINE HAD BEEN RUNNING WITH A RICH MIXTURE.
NTSB Probable Cause
THE BLOCKAGE OF THE INLET AIR FILTER FROM SNOW.
Full Narrative
THE PILOT STATED THAT WHILE IN CRUISE FLIGHT AT 1,000' AGL, THE LEFT ENGINE LOST POWER. HE STATED HE NOTED BLACK SMOKE COMING FROM THE EXHAUST AND HE FEATHERED THE PROPELLER. THE PILOT STATED THE AIRPLANE WOULD NOT MAINTAIN ALTITUDE AND HE DID NOT THINK HE COULD MAKE IT BACK TO AN AIRPORT, SO HE LANDED THE AIRPLANE GEAR-UP ON A RIVER BED. POST ACCIDENT INSPECTION REVEALED THE LEFT ENGINE INLET AIR FILTER WAS BLOCKED BY SNOW. THE RIGHT ENGINE FILTER WAS ALSO FOUND CONTAMINATED WITH SNOW. SPARK PLUG INSPECTION REVEALED THE ENGINE HAD BEEN RUNNING WITH A RICH MIXTURE.
Flight
Event TypeAccident
Event Time17:30 CST
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-23-160
Tail NumberN4229P
Aircraft CategoryAir
DamageSubstantial
OperatorHif
Operating RulePart 91
Engines2
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 160
Seats4
People & Injuries
Injury SummaryNo injuries (3 uninjured)
Fatal0
Serious0
Minor0
Uninjured3
Total3
Crew 1Age 22 · First Class
Conditions
ConditionsVMC
LightDaylight
Wind70° @ 8 kt
Visibility4 sm
CeilingOvercast 6000 ft
Temperature / Dew Point0 C / 0 C
Altimeter29.00 inHg
Observation Time23:50
Weather SourceWFAC