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NTSB Report
October 10, 1991 · Lake LA-4 · N25PA
Panama City, FL
Overview
Report Status
Probable Cause
Event Type
Accident
Date
October 10, 1991
Injury Outcomes
2 injuries (2 minor injuries)
Location
Panama City, FL
Aircraft
Lake LA-4
Tail Number
N25PA
Operator
Panama Aviation
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
MIA92LA009
WHILE ON THE DOWNWIND LEG AFTER THE STUDENT POSITIONED THE PROPELLER CONTROL TO THE HIGH RPM POSITION, THE CFI STATED THAT HE HEARD A LOUD NOISE & THE ENG EXPERIENCED A LOSS OF POWER. THE CFI TOOK CONTROL OF THE ACFT, IMMEDIATELY INITIATED A DESCENT, POSITIONED THE PROPELLER CONTROL TO THE LOW RPM POSITION, BUT NEVER LOOKED AT THE ENG INSTRUMENTS. WHILE DESCENDING THE ACFT COLLIDED WITH TREES, THEN CAME TO REST INVERTED ON THE GROUND. THE ACFT WAS EXAMINED WHICH REVEALED FUEL QUANTITY SUFFICIENT TO SUSTAIN ENG OPERATION. THE ENG WAS REMOVED FOR FURTHER EXAMINATION WHICH REVEALED NO EVIDENCE OF PRE-IMPACT FAILURE OR MALFUNCTION. THE PROP & PROP GOVERNOR WERE REMOVED FOR EXAM WHICH REVEALED NO EVIDENCE OF PREIMPACT FAILURE OR MALFUNCTION. NO DETERMINATION COULD BE MADE AS TO THE REASON FOR THE REPORTED LOSS OF POWER.
NTSB Probable Cause
LOSS OF POWER DUE TO UNDETERMINED REASONS. CONTRIBUTING TO THE ACCIDENT WAS THE CFI'S INADEQUATE EMERGENCY PROCEDURES FOLLOWING THE REPORTED LOSS OF POWER.
Full Narrative
WHILE ON THE DOWNWIND LEG AFTER THE STUDENT POSITIONED THE PROPELLER CONTROL TO THE HIGH RPM POSITION, THE CFI STATED THAT HE HEARD A LOUD NOISE & THE ENG EXPERIENCED A LOSS OF POWER. THE CFI TOOK CONTROL OF THE ACFT, IMMEDIATELY INITIATED A DESCENT, POSITIONED THE PROPELLER CONTROL TO THE LOW RPM POSITION, BUT NEVER LOOKED AT THE ENG INSTRUMENTS. WHILE DESCENDING THE ACFT COLLIDED WITH TREES, THEN CAME TO REST INVERTED ON THE GROUND. THE ACFT WAS EXAMINED WHICH REVEALED FUEL QUANTITY SUFFICIENT TO SUSTAIN ENG OPERATION. THE ENG WAS REMOVED FOR FURTHER EXAMINATION WHICH REVEALED NO EVIDENCE OF PRE-IMPACT FAILURE OR MALFUNCTION. THE PROP & PROP GOVERNOR WERE REMOVED FOR EXAM WHICH REVEALED NO EVIDENCE OF PREIMPACT FAILURE OR MALFUNCTION. NO DETERMINATION COULD BE MADE AS TO THE REASON FOR THE REPORTED LOSS OF POWER.
Flight
Event TypeAccident
Event Time14:32 CDT
Nearest AirportPanama City-Bay County (1nm SE)
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftLake LA-4
Tail NumberN25PA
Aircraft CategoryAir
DamageSubstantial
OperatorPanama Aviation
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-360-A1A · Reciprocating · 180
Seats4
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 67 · First Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility8 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO