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NTSB Report
February 23, 1992 · Cessna 150 · N126NK
San Jose, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
February 23, 1992
Injury Outcomes
2 injuries (2 minor injuries)
Location
San Jose, CA
Aircraft
Cessna 150
Tail Number
N126NK
Operator
Veda
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
LAX92LA124
A CESSNA 150 CRASHED AFTER EXPERIENCING AN IN FLIGHT LOSS OF CONTROL. DURING THE INITIAL TAKEOFF ON RUNWAY 31R THE CFI TRANSMITTED A 'MAY DAY' CALL TO THE AIR TRAFFIC CONTROL TOWER STATING THE AIRPLANE HAD A PARTIAL LOSS OF ENGINE POWER. THE LOCAL CONTROLLER CLEARED THE FLIGHT TO LAND ON ANY RUNWAY. THE PILOT EXECUTED A 180 DEGREE TURN AND LANDED LONG ON RUNWAY 13L. THE CFI THEN ATTEMPTED A GO-AROUND. WITNESSES OBSERVED THE AIRPLANE CLIMB TO 50 FEET AND THEN ENTER A RIGHT SKIDDING TURN, STALL, AND SPIN, IMPACTING THE GROUND OUTSIDE OF THE AIRPORT BOUNDARY. THE CFI INDICATED THAT THE AIRPLANE'S ENGINE HAD PREVIOUSLY MALFUNCTIONED WITH A STICKING VALVE AND THOUGHT THE VALVE WAS STICKING AGAIN. THE POST ACCIDENT EXAMIATION OF THE ENGINE REVEALED THE NUMBER 4 CYLINDER ROCKER ARM VALVE MALFUNCTIONED AS A RESULT OF A FRACTURED ROCKER ARM SHAFT BOSS.
NTSB Probable Cause
THAT THE CERTIFIED FLIGHT INSTRUCTOR'S (CFI) MISJUDGED APPROACH WHICH RESULTED IN A LONG LANDING, THE CFI'S IN-FLIGHT DECISION TO A GO-AROUND WITH PARTIAL POWER, AND THE FAILURE OF THE CFI TO MAINTAIN AIRCRAFT CONTROL IN THE INITIAL CLIMB SEGMENT OF THE PARTIAL POWER GO-AROUND RESULTING IN AN INADVERTENT STALL. CONTRIBUTING TO THE ACCIDENT WAS THE INADEQUATE MAINTENANCE INSPECTION PERFORMED BY THE OPERATOR'S MAINTENANCE MANAGEMENT PERSONNEL AFTER THE INITIAL STUCK VALVE DEFICIENCY AND THE DECISION OF THE CFI TO OPERATE THE AIRPLANE WITH A KNOWN DISCREPANCY.
Full Narrative
A CESSNA 150 CRASHED AFTER EXPERIENCING AN IN FLIGHT LOSS OF CONTROL. DURING THE INITIAL TAKEOFF ON RUNWAY 31R THE CFI TRANSMITTED A 'MAY DAY' CALL TO THE AIR TRAFFIC CONTROL TOWER STATING THE AIRPLANE HAD A PARTIAL LOSS OF ENGINE POWER. THE LOCAL CONTROLLER CLEARED THE FLIGHT TO LAND ON ANY RUNWAY. THE PILOT EXECUTED A 180 DEGREE TURN AND LANDED LONG ON RUNWAY 13L. THE CFI THEN ATTEMPTED A GO-AROUND. WITNESSES OBSERVED THE AIRPLANE CLIMB TO 50 FEET AND THEN ENTER A RIGHT SKIDDING TURN, STALL, AND SPIN, IMPACTING THE GROUND OUTSIDE OF THE AIRPORT BOUNDARY. THE CFI INDICATED THAT THE AIRPLANE'S ENGINE HAD PREVIOUSLY MALFUNCTIONED WITH A STICKING VALVE AND THOUGHT THE VALVE WAS STICKING AGAIN. THE POST ACCIDENT EXAMIATION OF THE ENGINE REVEALED THE NUMBER 4 CYLINDER ROCKER ARM VALVE MALFUNCTIONED AS A RESULT OF A FRACTURED ROCKER ARM SHAFT BOSS.
Flight
Event TypeAccident
Event Time19:40 PST
Nearest AirportReid-Hillview (1nm SE)
Runway13
Runway Length3101 ft
Runway Width75 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCessna 150
Tail NumberN126NK
Aircraft CategoryAir
DamageDestroyed
OperatorVeda
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsContinental · O-200-A · Reciprocating · 100
Seats2
People & Injuries
Injury Summary2 injuries (2 minor injuries)
Fatal0
Serious0
Minor2
Uninjured0
Total2
Crew 1Age 24 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind300° @ 7 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point57 / 54
Altimeter30.00 inHg
Observation Time03:35
Weather SourceWFAC