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NTSB Report
April 30, 1989 · Tesmer Glassair SH-2 · N29HJ
Watertown, WI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 30, 1989
Injury Outcomes
No injuries (1 uninjured)
Location
Watertown, WI
Aircraft
Tesmer Glassair SH-2
Tail Number
N29HJ
Injuries
None
Aircraft Damage
Substantial
NTSB Number
CHI89DEP03
THE NEW, HOME BUILT, ACFT WAS ON ITS MAIDEN FLT. AS THE OWNER WAS PERFORMING STALLS ABOUT 1/2 HR AFTER TAKEOFF, THE ENG BEGAN RUNNING ROUGH. POWER WAS RESTORED WHEN THE PLT TURNED ON THE ELEC BOOST PUMP & SELECTED THE HEADER TANK. ABOUT 2 MIN LATER, AS HE WAS APCHG THE ARPT TO LAND, THE ENG LOST POWER AGAIN & WOULD NOT RESTART. SUBSEQUENTLY, THE ACFT WAS DAMAGED DRG AN EMERG LNDG. DRG AN EXAM OF THE FUEL SYS, AIR WAS FOUND IN THE PLASTIC FUEL LINE & NO FUEL WAS FOUND IN THE GASCOLATOR. THE FLOAT/NEEDLE VALVE WAS FOUND STUCK IN THE OPEN PSN & THE FLOAT SETTING WAS ABOUT 1/2 INCH OUT OF ADJUSTMENT. HOWEVER, THE OPEN VALVE SHOULD HAVE ALLOWED UNRESTRICTED FUEL FLOW RATHER THAN FUEL STARVATION. THE BUILDER HAD MODIFIED THE FUEL SYS BY INSTALLING AN EXTRA FUEL FILTER. THE EXTRA FUEL FILTER WAS INSTALLED IN THE PLASTIC FUEL LINE & WAS IN ADDITION TO THE SCREENS IN THE GASCOLATOR & THE CARBURETOR INLET.
NTSB Probable Cause
LACK FUEL FLOW TO THE ENGINE (FUEL STARVATION) DUE TO AN UNDETERMINED FUEL SYSTEM PROBLEM.
Full Narrative
THE NEW, HOME BUILT, ACFT WAS ON ITS MAIDEN FLT. AS THE OWNER WAS PERFORMING STALLS ABOUT 1/2 HR AFTER TAKEOFF, THE ENG BEGAN RUNNING ROUGH. POWER WAS RESTORED WHEN THE PLT TURNED ON THE ELEC BOOST PUMP & SELECTED THE HEADER TANK. ABOUT 2 MIN LATER, AS HE WAS APCHG THE ARPT TO LAND, THE ENG LOST POWER AGAIN & WOULD NOT RESTART. SUBSEQUENTLY, THE ACFT WAS DAMAGED DRG AN EMERG LNDG. DRG AN EXAM OF THE FUEL SYS, AIR WAS FOUND IN THE PLASTIC FUEL LINE & NO FUEL WAS FOUND IN THE GASCOLATOR. THE FLOAT/NEEDLE VALVE WAS FOUND STUCK IN THE OPEN PSN & THE FLOAT SETTING WAS ABOUT 1/2 INCH OUT OF ADJUSTMENT. HOWEVER, THE OPEN VALVE SHOULD HAVE ALLOWED UNRESTRICTED FUEL FLOW RATHER THAN FUEL STARVATION. THE BUILDER HAD MODIFIED THE FUEL SYS BY INSTALLING AN EXTRA FUEL FILTER. THE EXTRA FUEL FILTER WAS INSTALLED IN THE PLASTIC FUEL LINE & WAS IN ADDITION TO THE SCREENS IN THE GASCOLATOR & THE CARBURETOR INLET.
Flight
Event TypeAccident
Event Time07:00 CDT
Nearest AirportWatertown Muni (1nm ENE)
Runway23
Runway Length3600 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftTesmer Glassair SH-2
Tail NumberN29HJ
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-B3B · Reciprocating · 160
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 28 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 10 kt
Visibility10 sm
CeilingOvercast 2500 ft
Temperature / Dew Point41 C / 0 C
Altimeter30.00 inHg
Observation Time11:50
Weather SourceWFAC