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NTSB Report
April 8, 1990 · Piper PA-18 · N64RS
Chugiak, AK
Overview
Report Status
Probable Cause
Event Type
Accident
Date
April 8, 1990
Injury Outcomes
No injuries (1 uninjured)
Location
Chugiak, AK
Aircraft
Piper PA-18
Tail Number
N64RS
Operator
John M Edwards
Injuries
None
Aircraft Damage
Substantial
NTSB Number
ANC90FA051
WHILE LANDING WITH A TEN KNOT CROSSWIND, THE PILOT LOST DIRECTIONAL CONTROL OF THE AIRPLANE AND GROUND LOOPED. THE LEFT MAIN LANDING GEAR THEN COLLAPSED, AND THE LEFT WING HIT THE RUNWAY. HE BLAMED THE LOSS OF CONTROL ON THE UNEQUAL APPLICATION OF BRAKES. THE AIRPLANE WAS EQUIPPED WITH 29 INCH OVER SIZED TIRES. LABORATORY EXAMINATION REVEALED THAT WELDS ON THE LANDING GEAR FAILED PREMATURELY AS A RESULT OF OVERSTRESS AND IMPROPER WELDING TECHNIQUES.
NTSB Probable Cause
THE PILOT LOST DIRECTIONAL CONTROL DURING THE LANDING ROLL AS A RESULT OF IMPROPER BRAKING.
Full Narrative
WHILE LANDING WITH A TEN KNOT CROSSWIND, THE PILOT LOST DIRECTIONAL CONTROL OF THE AIRPLANE AND GROUND LOOPED. THE LEFT MAIN LANDING GEAR THEN COLLAPSED, AND THE LEFT WING HIT THE RUNWAY. HE BLAMED THE LOSS OF CONTROL ON THE UNEQUAL APPLICATION OF BRAKES. THE AIRPLANE WAS EQUIPPED WITH 29 INCH OVER SIZED TIRES. LABORATORY EXAMINATION REVEALED THAT WELDS ON THE LANDING GEAR FAILED PREMATURELY AS A RESULT OF OVERSTRESS AND IMPROPER WELDING TECHNIQUES.
Flight
Event TypeAccident
Event Time13:45 AKDT
Nearest AirportBirchwood (0nm N)
Runway19
Runway Length4010 ft
Runway Width100 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftPiper PA-18
Tail NumberN64RS
Aircraft CategoryAir
DamageSubstantial
OperatorJohn M Edwards
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · O-320 · Reciprocating · 150
Seats2
People & Injuries
Injury SummaryNo injuries (1 uninjured)
Fatal0
Serious0
Minor0
Uninjured1
Total1
Crew 1Age 44 · Third Class
Conditions
ConditionsVMC
LightDaylight
Wind260°
Visibility90 sm
CeilingNone
Temperature / Dew Point46 / 27 C
Altimeter30.00 inHg
Observation Time16:55
Weather SourceWFAC