GAA18CA203

NTSB accident investigation · Carr B L RV 4 · Caldwell, ID · April 6, 2018

Accident · No injuriesData collectionFinal report
Date
April 6, 2018, 12:30 local (18:30 UTC)
Place
Caldwell, ID
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N66PBCarr B L RV 4
Defining event
Landing: Hard landing
Weather
Visual (VMC) · Day
Status
Completed · report October 24, 2018
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20180406003359A
Case key
97000

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Probable cause

The failure of the weld on the airplane’s left main landing gear axle support strut during landing, which resulted in a loss of directional control.

Findings · 2

NTSB’s coded findings. Those marked are part of the probable cause; the rest are factors or other findings. Under each, the cases with the same finding.

Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleCarr B L RV-4: 1 caseAll aircraft: 3,958 casesProbable cause

Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.

Analysis

According to the pilot in the experimental, amateur-built airplane, during landing, the airplane bounced, and the pilot added power. The airplane landed on the runway, but the left side of the airplane "dropped" to the ground. The airplane exited the left side of the runway where it came to rest. The airplane sustained substantial damage to the horizontal stabilizer. The Federal Aviation Administration aviation safety inspector that examined the airplane reported that the weld on the left main landing gear axle support strut had failed with some signs of overload.

Factual narrative

According to the pilot in the experimental amateur-built airplane, during landing the airplane bounced and the pilot added power. The airplane landed on the runway, but the left side of the airplane "dropped" to the ground. The airplane exited the left side of the runway where it came to rest. The airplane sustained substantial damage to the horizontal stabilizer. The Federal Aviation Administration, Aviation Safety Inspector that examined the airplane reported that the weld on the left main landing gear axle support strut had failed.

Aircraft

Registration
N66PB
Reported as
Carr B L RV 4 (UNDESIGNAT)
Category
Airplane, amateur-built
Serial number
2953
Built
1995
Airframe hours
666.9
Engine
Lycoming IO-360-A1A, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Annual · March 1, 2018
Departed
ID40 · Melba, ID
Destination
EUL · Caldwell, ID
Airport
EUL · Caldwell Industrial, runway 12, 5,500 × 100 ft, asphalt
Equipment
None

Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
66
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Last flight review
November 17, 2017
Seat
Front
Restraint
5-point
Flight hours
868 total · 340 in this make and model · 687 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
3,800 ft overcast
Temperature
55 °F, dew point 46 °F
Altimeter
29.92 inHg
Observed at
KEUL

Docket · 3

The files NTSB released with the investigation on August 28, 2018, on NTSB’s docket system: statements, records, photos and specialists’ reports. 4.1 MB in all.

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.

Other investigations on N66PB · 1

Matched to the same aircraft by N-number and date.