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NTSB Report
June 6, 1992 · Wsk Pzl Mielec PZL-M-18 · N4685R
Spangle, WA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 6, 1992
Injury Outcomes
No injuries (1 uninjured)
Location
Spangle, WA
Aircraft
Wsk Pzl Mielec PZL-M-18
Tail Number
N4685R
Operator
A-1 Aviation
Injuries
None
Aircraft Damage
Substantial
NTSB Number
SEA92LA221
AT THE BEGINNING OF AN AERIAL APPLICATION FLIGHT, THE OWNER OF THE AIRPLANE REPORTED THAT THE AIRPLANE WAS LOADED WITH APPROX 300 GALLONS OF CHEMICAL. AFTER THE AIRPLANE LIFTED OFF OF THE GRAVEL RUNWAY, THE AIRPLANE WOULD NOT GAIN ALTITUDE. THE PILOT FLEW THE AIRPLANE IN GROUND EFFECT OVER A DITCH AT THE END OF THE RUNWAY AND CONTINUED FOR A FORCED LANDING TO AN OPEN FIELD. THE PILOT ATTEMPTED TO JETTISON THE LOAD; HOWEVER, DUE TO A CLOGGED NOZZLE, THE LOAD COULD NOT BE DUMPED. DURING THE LANDING ROLL, THE AIRPLANE COLLIDED WITH THE ROUGH TERRAIN. THE OWNER HAD THE ENGINE INSPECTED AND REPORTED THAT THERE WAS NO EVIDENCE OF A MECHANICAL FAILURE OR MALFUNCTION.
NTSB Probable Cause
ALTITUDE WAS NOT ATTAINED. A FACTOR TO THE ACCIDENT WAS: LOAD JETTISON WAS NOT POSSIBLE.
Full Narrative
AT THE BEGINNING OF AN AERIAL APPLICATION FLIGHT, THE OWNER OF THE AIRPLANE REPORTED THAT THE AIRPLANE WAS LOADED WITH APPROX 300 GALLONS OF CHEMICAL. AFTER THE AIRPLANE LIFTED OFF OF THE GRAVEL RUNWAY, THE AIRPLANE WOULD NOT GAIN ALTITUDE. THE PILOT FLEW THE AIRPLANE IN GROUND EFFECT OVER A DITCH AT THE END OF THE RUNWAY AND CONTINUED FOR A FORCED LANDING TO AN OPEN FIELD. THE PILOT ATTEMPTED TO JETTISON THE LOAD; HOWEVER, DUE TO A CLOGGED NOZZLE, THE LOAD COULD NOT BE DUMPED. DURING THE LANDING ROLL, THE AIRPLANE COLLIDED WITH THE ROUGH TERRAIN. THE OWNER HAD THE ENGINE INSPECTED AND REPORTED THAT THERE WAS NO EVIDENCE OF A MECHANICAL FAILURE OR MALFUNCTION.
Flight
Event TypeAccident
Event Time07:00 PDT
Nearest AirportSPANGLE (1nm)
Runway0
Runway Length2100 ft
Runway Width50 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftWsk Pzl Mielec PZL-M-18
Tail NumberN4685R
Aircraft CategoryAir
DamageSubstantial
OperatorA-1 Aviation
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsPzl-Kalisz · ASZ-621R · Reciprocating · 986
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 60 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility50 sm
CeilingNone
Temperature / Dew Point50 / 0 C
Altimeter0
Weather SourceWIT