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NTSB Report
July 27, 1993 · Schweizer G167B · N6637Q
Borup, MN
Overview
Report Status
Final with probable cause
Event Type
Accident
Date
July 27, 1993
Injury Outcomes
No injuries (1 uninjured)
Location
Borup, MN
Aircraft
Schweizer G167B
Tail Number
N6637Q
Operator
Robert M Johnson
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI93LA303
THE PILOT REPORTED THE AIRPLANE LOST ENGINE POWER DURING AN AERIAL APPLICATION SPRAY RUN. HE MADE A FORCED LANDING ON A SOFT FIELD AND THE AIRPLANE NOSED OVER. EXAMINATION OF THE ENGINE REVEALED THAT THE NUMBER SEVEN CYLINDER HEAD WAS CRACKED BETWEEN THE SPARK PLUGS.
NTSB Probable Cause
the loss of engine power due to a cracked cylinder head.
Full Narrative
On July 27, 1993, about 1830 central daylight time, a Swizer G167B airplane, N6637Q, sustained substantial damage during a forced landing on a soft field near Borup, Minnesota. The solo commercial pilot was not injured. The aerial application flight operated under 14 CFR Part 137 without flight plan in visual meteorological conditions. The flight departed Ada, Minnesota, about 1845. The pilot reported a total loss of engine power during an approach to a field to begin aerial spraying. He made a forced landing in the field and the airplane nosed over in the soft terrain. An examination of the engine revealed the number seven cylinder head was cracked between the spark plugs.
Flight
Event TypeAccident
Event Time18:30 CDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftSchweizer G167B
Tail NumberN6637Q
Aircraft CategoryAir
DamageSubstantial
OperatorRobert M Johnson
Operating RulePart 137
Engines1
Engine TypeReciprocating
Engine DetailsP&W · R1340 · Reciprocating · 600
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 34 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind110° @ 5 kt
Visibility15 sm
CeilingNone
Temperature / Dew Point61 F
Altimeter30.00 inHg
Weather SourcePILO