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NTSB Report
July 31, 1987 · Piper PA-18 · N5416H
Anchorage, AK
Overview
Report Status
Preliminary report
Event Type
Accident
Date
July 31, 1987
Injury Outcomes
2 injuries (2 serious injuries)
Location
Anchorage, AK
Aircraft
Piper PA-18
Tail Number
N5416H
Operator
Frank Flores
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
ANC87FA112
TWO CERTIFICATED FLIGHT INSTRUCTORS INTENDED TO PRACTICE LANDINGS IN A TAIL WHEEL AIRPLANE. SHORTLY AFTER THE FIRST TAKE OFF, THE PIC STATED THAT THERE WAS AN ABRUPT LOSS OF POWER. THE AIRPLANE WAS UNABLE TO RETURN TO THE AIRPORT AND CRASHED ON A RESIDENTIAL STREET. A POST-CRASH INSPECTION REVEALED THAT THE CARBURETOR HEAT AIR DEFLECTOR VALVE IN THE CARBURETOR AIR BOX HAD DISENGAGED FROM ITS MOUNTING DUE TO CORROSION, AND HAD BLOCKED OFF ALL AIR TO THE CARBURETOR CAUSING THE ENGINE TO QUIT.
Full Narrative
TWO CERTIFICATED FLIGHT INSTRUCTORS INTENDED TO PRACTICE LANDINGS IN A TAIL WHEEL AIRPLANE. SHORTLY AFTER THE FIRST TAKE OFF, THE PIC STATED THAT THERE WAS AN ABRUPT LOSS OF POWER. THE AIRPLANE WAS UNABLE TO RETURN TO THE AIRPORT AND CRASHED ON A RESIDENTIAL STREET. A POST-CRASH INSPECTION REVEALED THAT THE CARBURETOR HEAT AIR DEFLECTOR VALVE IN THE CARBURETOR AIR BOX HAD DISENGAGED FROM ITS MOUNTING DUE TO CORROSION, AND HAD BLOCKED OFF ALL AIR TO THE CARBURETOR CAUSING THE ENGINE TO QUIT.
Flight
Event TypeAccident
Event Time09:22 AKDT
Nearest AirportMerrill Field (1nm SW)
Runway24
Runway Length4000 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18
Tail NumberN5416H
Aircraft CategoryAir
DamageSubstantial
OperatorFrank Flores
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · C-90-8F · Reciprocating · 90
Seats2
People & Injuries
Injury Summary2 injuries (2 serious injuries)
Fatal0
Serious2
Minor0
Uninjured0
Total2
Crew 1Age 22 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind340° @ 5 kt
Visibility50 sm
CeilingBroken clouds 8000 ft
Temperature / Dew Point57 / 55
Altimeter29.00 inHg
Observation Time12:27
Weather SourceWFAC