ANC15TA003

NTSB accident investigation · Cub Crafters CC18-180 · Anchorage, AK · October 19, 2014

Accident · No injuriesFinal report
Date
October 19, 2014, 15:30 local (23:30 UTC)
Place
Anchorage, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N537CCCub Crafters CC18-180
Defining event
Landing-flare/touchdown: Loss of control on ground
Weather
Visual (VMC) · Day
Status
Completed · report March 14, 2016
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
Federal Aviation Administration, Office of Aviation Services, Dept of the Interior, US Fish and Wildlife Service
FAA report
20141019022339A
Case key
90284

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 maintain directional control while attempting to drag 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 · PilotCub Crafters CC18-180: 8 casesAll aircraft: 9,295 casesProbable cause
Performance/control parameters: directional controlAircraft › Aircraft oper/perf/capability · Not attained/maintainedCub Crafters CC18-180: 7 casesAll aircraft: 3,958 casesProbable cause
Runway/land/takeoff/taxi surface: soft surfaceEnvironmental issues › Physical environment · Effect on equipmentCub Crafters CC18-180: 1 caseAll aircraft: 264 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 commercial pilot was conducting a cross-country public aircraft flight. He stated that he was making a straight-in approach to the off-airport landing site that was wet and soft with the intention of dragging the landing surface. Upon touchdown, the airplane bounced slightly, settled back to the surface, and then veered left. Unable to correct for the veer, the pilot applied full power in an attempt to initiate a go-around, but the airplane impacted the elevated edge of a creek bank and then came to rest upright in the water, which resulted in substantial damage to the left wing, elevators, and rudder. A postaccident examination of the airplane revealed no evidence of mechanical malfunctions or failures that would have precluded normal operation.

Factual narrative

On October 19, 2014, about 1530 Alaska daylight time, a tailwheel-equipped Cub Crafters Inc., CC18-180 airplane, N537CC, sustained substantial damage following a loss of control, while attempting to drag an off-airport landing site near Anchorage, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country public-use flight, under Title 14, CFR Part 91, when the accident occurred. The airplane was operated by the U.S. Department of Interior, U.S. Fish and Wildlife Service. The certificated commercial pilot and one passenger were not injured. Visual meteorological conditions prevailed, and a VFR flight plan had been filed. The flight originated at the Soldotna Airport, Soldotna, Alaska, about 1500, destined for Pincher Creek Cabin, an off-airport landing site, located within the Kenai National Wildlife Refuge near Anchorage, AK. During an interview with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on October 22, the pilot stated that he was making a straight in approach to the off-airport landing site located at Pincher Creek with the intention of dragging the landing surface. Upon touchdown, the airplane bounced slightly settled back to the surface and veered to the left. Unable to correct for the veer the pilot applied full power in an attempt to initiate the go-around, but the airplane impacted the elevated edge of the creek bank and came to rest upright in the water, sustaining substantial damage to the left wing, elevators, and rudder. He stated that the landing area was wet and soft in places with varying vegetation causing different forces to be enacted on the wheels, and felt he had simply lost directional control. A post-accident examination of the airplane by the NTSB IIC, two other NSTB investigators and two aviation safety inspectors from the Anchorage Flight Standards District Office revealed no mechanical irregularities that would have precluded normal operation. At the time of the accident, the pilot was using a Garmin GPSMAP 495 portable global positioning system (GPS) receiver, capable of storing route-of-flight data. The unit was sent to the NTSB's Vehicle Recorders Division for examination. A NTSB electrical engineer was able to extract the GPS data for the accident flight, which included, in part, time, latitude, longitude, and GPS altitude. Groundspeed and course information were derived from the extracted parameters. A flight track map overlay, and tabular data corresponding to the accident flight are available in the public docket for this accident. The closest weather reporting facility is Anchorage Airport, Anchorage, AK about 20 miles northeast of the accident site. At 1553, an aviation routine weather report (METAR) at Anchorage, Alaska, reported: wind 340 degrees at 4 knots; visibility, 10 statute miles; few clouds at 2,500 feet; broken clouds at 18,000 feet; temperature, 41 degrees F; dew point 26 degrees F; altimeter, 29.11 inHG.

Aircraft

Registration
N537CC
Reported as
Cub Crafters CC18-180
Category
Airplane
Serial number
CC18-0061
Built
2013
Airframe hours
247.3
Engine
Lycoming O-360-C4P, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Public aircraft - federal · Public use
Operator
US Fish and Wildlife Service
Registered owner
U S Department Of The Interior
Airworthiness certificate
Standard, Normal
Last inspection
Annual · June 16, 2014
Departed
PASX · Soldotna, AK
Destination
Anchorage, AK
Flight plan
VFR
Equipment
Stall warning system, 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
41
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Medical
Class 2, Without waivers/limitations
Last flight review
June 5, 2013
Seat
Front
Restraint
5-point
Flight hours
2,246 total · 52 in this make and model · 2,149 as pilot in command

Weather

Conditions
Visual (VMC) · Day
Wind
340° at 4 knots
Visibility
10 statute miles
Lowest ceiling
18,000 ft broken
Temperature
41 °F, dew point 27 °F
Altimeter
29.11 inHg
Observed at
PANC, 20 nm away

Docket · 8

The files NTSB released with the investigation on January 29, 2016, on NTSB’s docket system: statements, records, photos and specialists’ reports. 1.1 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.