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NTSB Report
September 22, 1990 · Piper PA-28-151 · N44678
Palmetto, GA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 22, 1990
Injury Outcomes
2 injuries (2 minor injuries)
Location
Palmetto, GA
Aircraft
Piper PA-28-151
Tail Number
N44678
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
ATL90LA174
DURING PREFLIGHT, THE PILOT OBSERVED A VIBRATION AFTER ENGINE START. HE ASSUMED HE HAD A FOULED SPARK PLUG AND LEANED THE MIXTURE. HE THEN SHUT DOWN THE ENGINE. AFTER RE-START, HE STATED THAT THE VIBRATION HAD CEASED. AT ABOUT 25 FEET AGL ON INITIAL CLIMBOUT, THE ENGINE SUDDENLY LOST POWER. THE AIRPLANE COLLIDED WITH SOME POWER LINES AND A TRAILER PRIOR TO IMPACTING TERRAIN. AN INSPECTION OF THE ENGINE REVEALED A STUCK NUMBER TWO EXHAUST VALVE. A WITNESS ON THE GROUND STATED THAT HE HEARD A 'HISSING' NOISE COMING FROM THE ENGINE DURING THE PREFLIGHT GROUND RUN. HE ALSO REPORTED THAT THE PILOT PERFORMED BETWEEN FOUR AND SIX MAGNETO CHECKS PRIOR TO TAKEOFF.
NTSB Probable Cause
THE NUMBER TWO CYLINDER EXHAUST VALVE STICKING IN THE CLOSED POSITION, WHICH RESULTED IN A PARTIAL POWER LOSS DURING THE TAKEOFF. A FACTOR IN THE ACCIDENT WAS THE PILOT'S IMPROPER PREFLIGHT INSPECTION, IN THAT HE DID NOT CORRECTLY ANALYZE THE ENGINE PROBLEM PRIOR TO FLIGHT.
Full Narrative
DURING PREFLIGHT, THE PILOT OBSERVED A VIBRATION AFTER ENGINE START. HE ASSUMED HE HAD A FOULED SPARK PLUG AND LEANED THE MIXTURE. HE THEN SHUT DOWN THE ENGINE. AFTER RE-START, HE STATED THAT THE VIBRATION HAD CEASED. AT ABOUT 25 FEET AGL ON INITIAL CLIMBOUT, THE ENGINE SUDDENLY LOST POWER. THE AIRPLANE COLLIDED WITH SOME POWER LINES AND A TRAILER PRIOR TO IMPACTING TERRAIN. AN INSPECTION OF THE ENGINE REVEALED A STUCK NUMBER TWO EXHAUST VALVE. A WITNESS ON THE GROUND STATED THAT HE HEARD A 'HISSING' NOISE COMING FROM THE ENGINE DURING THE PREFLIGHT GROUND RUN. HE ALSO REPORTED THAT THE PILOT PERFORMED BETWEEN FOUR AND SIX MAGNETO CHECKS PRIOR TO TAKEOFF.
Flight
Event TypeAccident
Event Time08:30 EDT
Nearest AirportSouth Fulton Skyport (0nm N)
Runway9
Runway Length2690 ft
Runway Width40 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-28-151
Tail NumberN44678
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320-E3D · Reciprocating · 150
Seats4
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 56 · Third Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility7 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO