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NTSB Report
September 25, 2022 · Hartunian Robert Pulsar XP · N204BH
Big Bear, CA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
September 25, 2022
Injury Outcomes
1 injury (1 minor injury)
Location
Big Bear, CA
Aircraft
Hartunian Robert Pulsar XP (2004)
Tail Number
N204BH
Injuries
Minor
Aircraft Damage
Substantial
NTSB Number
WPR22LA355
The pilot in the experimental amateur-built tricycle landing gear equipped airplane reported that, he was not aware that a 10-mph tailwind existed during landing. He normally touches down at 90 mph, however with the tailwind, the airplane’s ground speed was 104 mph when the airplane touched down and a severe shimmy ensued. The pilot applied the brakes, however the left side brake failed, and the airplane veered right, exited the right side of the runway, and subsequently impacted a hangar. The airplane sustained substantial damage to the left wing and engine mounts. Post-accident examination of the airplane revealed that the left main landing gear wheel pant inboard bracket rivets failed, and the wheel pant severed the plastic hydraulic brake line.
NTSB Probable Cause
The pilot’s inability to maintain directional control after landing with an excessive ground speed due to a tailwind which, resulted in a severe shimmy which subsequently damaged a hydraulic brake line.
Full Narrative
The pilot in the experimental amateur-built tricycle landing gear equipped airplane reported that, he was not aware that a 10-mph tailwind existed during landing. He normally touches down at 90 mph, however with the tailwind, the airplane’s ground speed was 104 mph when the airplane touched down and a severe shimmy ensued. The pilot applied the brakes, however the left side brake failed, and the airplane veered right, exited the right side of the runway, and subsequently impacted a hangar. The airplane sustained substantial damage to the left wing and engine mounts. Post-accident examination of the airplane revealed that the left main landing gear wheel pant inboard bracket rivets failed, and the wheel pant severed the plastic hydraulic brake line.
Flight
Event TypeAccident
Event Time09:30 PDT
Nearest AirportBig Bear City Airport (0nm)
Runway26
Runway Length5850 ft
Runway Width75 ft
Flight Plan FiledNone
Flight Plan ActivatedNo
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHartunian Robert Pulsar XP
Tail NumberN204BH
Aircraft CategoryAir
DamageSubstantial
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsRotax · 912S · Reciprocating · 100
Seats2
People & Injuries
Injury Summary1 injury (1 minor injury)
Fatal0
Serious0
Minor1
Uninjured0
Total1
Crew 1Age 83 · Basc · None
Conditions
ConditionsVMC
LightDaylight
Wind70° @ 4 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point68 F / 50 F
Altimeter30.41 inHg
Observation Time09:35
Weather SourceWFAC