ANC24LA003

NTSB accident investigation · Cessna 180H · McCarthy, AK · November 21, 2023

Accident · No injuriesClass 4 · LimitedFinal report
Date
November 21, 2023, 21:00 UTC
Place
McCarthy, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N91393Cessna 180H
Defining event
Landing: Loss of control on ground
Weather
Visual (VMC) · Dawn
Status
Completed
Report
Approved by Office Director
Investigation class
Class 4 - Basic report with no Prelim publish
NTSB office
Alaska Regional Office
Parties
FAA FSDO
Case key
193416

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 loss of directional control after touchdown which resulted in substantial damage to the right wing.

Findings · 3

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 · PilotCessna 180H: 32 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 180H: 29 casesAll aircraft: 3,958 casesProbable cause
Runway/land/takeoff/taxi surface: snow/slush/ice covered surfaceEnvironmental issues › Physical environment · Contributed to outcomeCessna 180H: 1 caseAll aircraft: 219 cases

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

While landing a wheel/ski-equipped airplane on a snow and ice-covered runway, after touchdown, the airplane began to slide to the right side of the runway. The pilot reported that the edge of a ski impacted a lip of ice which caused the airplane to nose down, and the right wing subsequently struck the ground, resulting in substantial damage. The pilot reported that there were no pre-accident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N91393
Reported as
Cessna 180H
Category
Airplane
Serial number
18052063
Built
1969
Airframe hours
8,335.1
Engine
Continental IO520D116B, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Business · Part 135
Airworthiness certificate
Standard, Normal
Last inspection
Annual · November 4, 2023
Departed
PAGK · Gulkana, AK
Destination
Same as departure
Flight plan
Company VFR
Airport
15K · McCarthy, runway 01, 3,501 × 60 ft, snow
Equipment
ADS-B, Auto-pilot, Handheld GPS, Satellite tracking device

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
23
Injuries
None
Certificates
Commercial, Flight instructor
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Without waivers/limitations
Last flight review
June 12, 2023
Seat
Left
Restraint
4-point
Flight hours
1,674 total · 315 in this make and model · 1,605 as pilot in command · 79 in the last 90 days · 12 in the last 30 days · 0 in the last 24 hours

Weather

Conditions
Visual (VMC) · Dawn
Wind
Calm
Visibility
10 statute miles
Lowest ceiling
None
Temperature
-11 °F, dew point -17 °F
Altimeter
29.62 inHg
Observed at
AGK, 84 nm away
METAR
PAGK 211953Z AUTO 00000KT 10SM CLR M24/M27 A2962 RMK AO2 SLP103 T12441272 TSNO

Docket · 2

The files NTSB released with the investigation on June 28, 2024, on NTSB’s docket system: statements, records, photos and specialists’ reports. 2.5 MB in all.

Other investigations on N91393 · 1

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