GAA17CA521

NTSB accident investigation · Cessna 180 · Ambler, AK · September 5, 2017

Accident · No injuriesData collectionFinal report
Date
September 4, 2017, 16:00 local (Sep 5, 2017, 00:00 UTC)
Place
Ambler, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N8249VCessna 180
Defining event
Landing: Landing area undershoot
Weather
Visual (VMC) · Day
Status
Completed · report November 27, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170904020709A
Case key
95962

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 pilot’s failure to maintain an appropriate glidepath to an off-airport landing site.

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: descent/approach/glide pathAircraft › Aircraft oper/perf/capability · Not attained/maintainedCessna 180H: 1 caseAll aircraft: 809 casesProbable cause
Runway/land/takeoff/taxi surfaceEnvironmental issues › Physical environment · Effect on operationCessna 180H: 3 casesAll aircraft: 253 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

The pilot of the tailwheel-equipped airplane reported that, during landing on an off-airport gravel bar, the airplane touched down about 30 ft short of the intended landing area. Subsequently, the right wheel struck a large rock, the gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the fuselage and left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Factual narrative

The pilot of the tailwheel-equipped airplane reported that, during landing on an off-airport gravel bar, the airplane touched down about 30 ft. short of the intended landing area. Subsequently, the right wheel struck a large rock, the gear collapsed, and the left wing impacted the ground. The airplane sustained substantial damage to the fuselage and left wing. The pilot reported that there were no preaccident mechanical failures or malfunctions with the airplane that would have precluded normal operation.

Aircraft

Registration
N8249V
Reported as
Cessna 180 (H)
Category
Airplane
Serial number
18051751
Built
1966
Airframe hours
4,215.81
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Airworthiness certificate
Standard, Normal
Last inspection
Annual · May 8, 2017
Departed
OBU · Kobuk, AK
Destination
Ambler, AK
Equipment
Stall warning system, ADS-B, Handheld GPS, Satellite tracking device, Onboard weather

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
77
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 2, With waivers/limitations
Last flight review
June 23, 2017
Seat
Left
Restraint
3-point
Flight hours
4,500 total · 1,800 in this make and model · 4,500 as pilot in command · 20 in the last 90 days · 17 in the last 30 days · 6 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
130° at 10 knots, gusting 15
Visibility
10 statute miles
Lowest ceiling
6,000 ft broken
Temperature
59 °F, dew point 37 °F
Altimeter
29.75 inHg
Observed at
PAFM, 51 nm away

Docket · 2

The files NTSB released with the investigation on November 6, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.3 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.