WPR11CA109

NTSB accident investigation · Cessna 180H · Helena, MT · January 26, 2011

Accident · No injuriesData collectionFinal report
Date
January 26, 2011, 12:15 local (19:15 UTC)
Place
Helena, MT
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N9067MCessna 180H
Defining event
Landing-landing roll: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report June 8, 2011
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Helena FSDO
FAA report
20110126000419A
Case key
78224

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 certified flight instructor's loss of airplane control during the landing roll in a gusting crosswind.

Findings · 5

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 · Not attained/maintainedCessna 180H: 29 casesAll aircraft: 3,958 casesProbable cause
Wind: crosswindEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180H: 8 casesAll aircraft: 1,008 cases
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeCessna 180H: 5 casesAll aircraft: 1,199 cases
TerrainEnvironmental issues › Physical environment · Contributed to outcomeCessna 180H: 1 caseAll aircraft: 267 cases
Use of equip/info: aircraft controlPersonnel issues › Task performance · Instructor/check pilotCessna 180H: 32 casesAll aircraft: 9,295 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

During the first part of the training flight in the tailwheel-equipped airplane, the pilot receiving instruction made four takeoffs and landings on a runway that was almost directly aligned with the oncoming wind. At that point the certified flight instructor (CFI) took over in order to demonstrate a landing on a different runway where there was a crosswind of about 10 to 12 knots at 90 degrees to the runway. The CFI made a successful touchdown on the main landing gear wheels, but as the airplane slowed and he began to lower the tail to the runway surface, the upwind wing was lifted by a gust of wind. When the CFI made control inputs to counter the lifting of the wing the opposite wing impacted the surface of the runway and the airplane veered toward the upwind runway edge. Before he could regain directional control, the airplane departed the right side of the runway, entered an area of soft terrain, and nosed over onto its back. According to the CFI, there was no evidence of a flight control malfunction prior to the accident.

Factual narrative

During the first part of the training flight in the conventional wheel (tail wheel-equipped) airplane, the pilot receiving instruction made four stop-and-go landings on a runway that was almost directly aligned with the oncoming wind. At that point the instructor pilot took over in order to demonstrate a landing on a different runway where there was a crosswind of about 10 to 12 knots at 90 degrees to the runway. The instructor pilot made a successful touchdown on the main landing gear wheels, but as the airplane slowed and he began to lower the tail to the runway surface, the upwind wing was lifted by a gust of wind. Although the instructor pilot made control inputs to counter the lifting of the wing, the opposite wing impacted the surface of the runway, and the airplane veered toward the upwind runway edge. Before the instructor pilot could regain directional control, the airplane departed the right side of the runway, entered an area of soft terrain, and nosed over onto its back. According to the instructor pilot, there was no evidence of a flight control or rudder control malfunction.

Aircraft

Registration
N9067M
Reported as
Cessna 180H
Category
Airplane
Serial number
18052167
Engine
Cont Motor O-470 SERIES, 230 horsepower, reciprocating
Damage
Substantial damage
Flight
Instructional · Part 91
Operator
State Of Montana
Registered owner
State Of Montana
Airworthiness certificate
Standard, Normal
Departed
KHLN · Helena, MT
Destination
KHLN · Helena, MT
Flight plan
Unknown
Airport
KHLN · Helena Regional Airport, runway 16, 2,989 × 75 ft, asphalt

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
Flight instructor
Age
54
Injuries
None
Certificates
Flight instructor, Commercial
Airplane ratings
Single-engine land
Instrument ratings
Helicopter, Airplane
Medical
Class 2, With waivers/limitations
Last flight review
May 20, 2010
Flight hours
9,650 total · 115 in this make and model

Weather

Conditions
Visual (VMC) · Day
Wind
260° at 12 knots, gusting 17
Visibility
10 statute miles
Lowest ceiling
12,000 ft overcast
Temperature
45 °F, dew point 21 °F
Altimeter
30.25 inHg

Docket · 1

The files NTSB released with the investigation on February 11, 2011, on NTSB’s docket system: statements, records, photos and specialists’ reports. 855 KB 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.