WPR23LA246

NTSB accident investigation · Black Sheep CCX-1865 · Big Creek Ranger Station, ID · June 28, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
June 28, 2023, 12:50 local (18:50 UTC)
Place
Big Creek Ranger Station, ID · Mountain air strip
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N510USBlack Sheep CCX-1865
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Western Pacific Region
Parties
FAA
FAA report
20230628008319A
Case key
192488

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

On this page

Probable cause

The pilot’s failure to identify the wet landing surface and his subsequent inability to maintain directional control and stop during landing on the unimproved grass runway, which resulted in a runway excursion and unintentional ground loop.

Findings · 4

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.

Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotBlack Sheep CCX-1865: 1 caseAll aircraft: 9,295 casesProbable cause
Runway/land/takeoff/taxi surface: wet surfaceEnvironmental issues › Physical environment · Ability to respond/compensateBlack Sheep CCX-1865: 1 caseAll aircraft: 141 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Attain/maintain not possibleBlack Sheep CCX-1865: 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

The pilot of the tailwheel-equipped airplane reported that he conducted multiple passes over the landing area to assess the landing conditions and did not see that the grass surface was wet. Upon touchdown, he noticed the airplane did not decelerate as expected due to wet tires, and the brakes had little effect. The airplane veered off its intended path, heading toward steep downhill terrain. To prevent continuing uncontrollably downhill, the pilot attempted an intentional ground loop by applying full right rudder and power. Subsequently, the airplane tipped left and stopped before reaching the steeper terrain, resulting in substantial damage to the left aileron and left elevator. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N510US
Reported as
Black Sheep CCX-1865
Category
Airplane, amateur-built
Serial number
CCX-1865-0007
Built
2016
Airframe hours
435
Engine
Titan CC340, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Special, Experimental (Special)
Last inspection
Condition · February 16, 2023 · 27 hours before
Departed
3U2 · Yellow Pine, ID
Destination
Same as departure
Airport
n/a · Mile Hi
Equipment
Auto-pilot, Angle of attack indicator, ADS-B, Stall warning system, Satellite tracking device, Onboard weather, Electronic primary flight display, Electronic multifunction display

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
47
Injuries
None
Certificates
Flight instructor, Airline transport
Airplane ratings
Multi-engine land, Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
November 28, 2022
Seat
Front
Restraint
4-point
Flight hours
8,800 total · 425 in this make and model · 5,000 as pilot in command · 240 in the last 90 days · 45 in the last 30 days

Weather

Conditions
Visual (VMC) · Day
Wind
80° at 7 knots
Visibility
10 statute miles
Lowest ceiling
4,900 ft broken
Temperature
59 °F, dew point 48 °F
Altimeter
30.07 inHg
Observed at
KMYL, 49 nm away
METAR
KMYL 281851Z AUTO 08007KT 10SM FEW023 BKN049 BKN080 15/09 A3007 RMK AO2 LTG DSNT SW RAB36E50 SLP160 P0000 T01500094 $

Docket · 2

The files NTSB released with the investigation on November 2, 2023, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.6 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.