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NTSB Report
May 29, 1992 · Piper PA-28-140 · N6434R
Monarch, MT
Overview
Report Status
Probable Cause
Event Type
Accident
Date
May 29, 1992
Injury Outcomes
1 injury (1 minor injury)
Location
Monarch, MT
Aircraft
Piper PA-28-140
Tail Number
N6434R
Operator
Chamberlain Dwight N
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
SEA92LA110
AFTER RECEIVING A WEATHER BRIEFING DURING WHICH VFR FLIGHT WAS NOT RECOMMENDED, THE NON-INSTRUMENT RATED PILOT DEPARTED PRIEST RIVER, EN ROUTE TO LEWISTOWN. APPROXIMATELY 50 NAUTICAL MILES SHORT OF HIS DESTINATION, OVER HILLY/MOUNTAINOUS TERRAIN, THE AIRCRAFT COLLIDED WITH TREES NEAR THE TOP OF A 7650 FOOT RIDGELINE AND CRASHED. THE PILOT REPORTED LOW CEILINGS AND 1.5 MILES VISIBILITY RESTRICTED BY MODERATE RAIN AND CLOUDS AT THE TIME OF THE ACCIDENT. HE ALSO REPORTED A LOSS OF ALTITUDE AT FULL POWER APPROACHING THE RIDGELINE THAT WAS NOT ATTRIBUTED TO ANY AIRCRAFT MALFUNCTION.
NTSB Probable Cause
THE PILOT IN COMMAND'S DISREGARD OF THE WEATHER FORECAST AND FAILURE TO MAINTAIN CLEARANCE WITH TREES/TERRAIN. FACTORS CONTRIBUTING TO THE ACCIDENT WERE: HILLY/MOUNTAINOUS TERRAIN, WEATHER CONDITIONS: RAIN, LOW CEILINGS AND DOWNDRAFTS, TREES AND THE PILOT IN COMMAND'S CONTINUED FLIGHT INTO KNOWN ADVERSE WEATHER.
Full Narrative
AFTER RECEIVING A WEATHER BRIEFING DURING WHICH VFR FLIGHT WAS NOT RECOMMENDED, THE NON-INSTRUMENT RATED PILOT DEPARTED PRIEST RIVER, EN ROUTE TO LEWISTOWN. APPROXIMATELY 50 NAUTICAL MILES SHORT OF HIS DESTINATION, OVER HILLY/MOUNTAINOUS TERRAIN, THE AIRCRAFT COLLIDED WITH TREES NEAR THE TOP OF A 7650 FOOT RIDGELINE AND CRASHED. THE PILOT REPORTED LOW CEILINGS AND 1.5 MILES VISIBILITY RESTRICTED BY MODERATE RAIN AND CLOUDS AT THE TIME OF THE ACCIDENT. HE ALSO REPORTED A LOSS OF ALTITUDE AT FULL POWER APPROACHING THE RIDGELINE THAT WAS NOT ATTRIBUTED TO ANY AIRCRAFT MALFUNCTION.
Flight
Event TypeAccident
Event Time12:35 MDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28-140
Tail NumberN6434R
Aircraft CategoryAir
DamageDestroyed
OperatorChamberlain Dwight N
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E2A · Reciprocating · 150
Seats4
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 37 · Third Class
Conditions
ConditionsIMC
LightDaylight
Wind240° @ 6 kt
Visibility45 sm
CeilingBroken clouds 4500 ft
Temperature / Dew Point54 / 50
Altimeter29.00 inHg
Observation Time18:50
Weather SourceWFAC