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NTSB Report
October 24, 2009 · Curtiss Wright P-40E · N4420K
Lincoln, NE
Overview
Report Status
Final with probable cause
Event Type
Incident
Date
October 24, 2009
Injury Outcomes
No injuries (1 uninjured)
Location
Lincoln, NE
Aircraft
Curtiss Wright P-40E
Tail Number
N4420K
Operator
Minnesota Airways
Injuries
None
Aircraft Damage
Minor
NTSB Number
CEN10IA030
Upon touchdown, the World War II era tailwheel-equipped airplane experienced an uncontrollable swerve as the right main landing gear began to collapse. As the right main gear exited the edge of the runway, the airplane rocked forward onto its nose and the propeller and left wing tip impacted the ground. The airplane rocked back and came to rest partially off the runway in an upright and right wing low position. An examination of the landing gear retraction system revealed that the landing gear handle detent was contaminated with paint. Subsequently, the landing gear handle did not stay in the detent which resulted in the right landing gear downlock pin to partially retract followed by the partial retraction of the right main landing gear.
NTSB Probable Cause
The right landing gear's partial retraction during landing due to paint contamination of the landing gear handle detent.
Full Narrative
Upon touchdown, the World War II era tailwheel-equipped airplane experienced an uncontrollable swerve as the right main landing gear began to collapse. As the right main gear exited the edge of the runway, the airplane rocked forward onto its nose and the propeller and left wing tip impacted the ground. The airplane rocked back and came to rest partially off the runway in an upright and right wing low position. An examination of the landing gear retraction system revealed that the landing gear handle detent was contaminated with paint. Subsequently, the landing gear handle did not stay in the detent which resulted in the right landing gear downlock pin to partially retract, followed by the partial retraction of the right main landing gear.
Flight
Event TypeIncident
Event Time10:20 CDT
Nearest AirportLincoln Municipal Airport (0nm)
Runway17
Runway Length5400 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftCurtiss Wright P-40E
Tail NumberN4420K
Aircraft CategoryAir
DamageMinor
OperatorMinnesota Airways
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsAllison · V-1710-39 · Reciprocating · 1425
Seats1
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 60 · Second Class · None
Conditions
ConditionsVMC
LightDaylight
Wind170° @ 6 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point39 C / 36 C
Altimeter29.78 inHg
Observation Time14:55
Weather SourcePILO