ANC10LA006

NTSB accident investigation · Champion 7GCBC · Kenai, AK · November 6, 2009

Accident · No injuriesLimited investigationFinal report
Date
November 6, 2009, 15:15 local (19:15 UTC)
Place
Kenai, AK
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Enroute
Aircraft
N5268XChampion 7GCBC
Defining event
Enroute-cruise: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report August 12, 2010
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA FSDO-03
FAA report
20091106051009A
Case key
75038

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 decision to fly at a low altitude in strong winds and turbulence, resulting in a loss of control and a collision with terrain.

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: altitudeAircraft › Aircraft oper/perf/capability · Not attained/maintainedChampion 7GCBC: 1 caseAll aircraft: 1,310 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotChampion 7GCBC: 8 casesAll aircraft: 9,295 casesProbable cause
Wind: downdraftEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeChampion 7GCBC: 2 casesAll aircraft: 178 cases
Turbulence: terrain induced turbulenceEnvironmental issues › Conditions/weather/phenomena · Contributed to outcomeChampion 7GCBC: 1 caseAll aircraft: 70 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 private pilot with one passenger was on a personal local flight when the accident occurred. The pilot said that he was looking for areas to trap during the coming season. He was cruising west, about 1,000 feet above ground level into a strong headwind, and his global positioning system showed a ground speed of 60 knots. He then made a 180-degree turn to the east and was indicating a ground speed of 128 knots. The pilot said that as he turned to the north he encountered a crosswind that rolled the airplane inverted. He then righted the airplane, but the crosswind rolled the airplane inverted a second time. As the pilot righted the airplane again, a downdraft pushed it into the treetops. He said that there were no preexisting mechanical problems with the airplane but that the airplane sustained substantial damage to both wings and the fuselage during the accident.

Factual narrative

On November 6, 2009, about 1515 Alaska standard time, a Champion 7GCBC airplane, sustained substantial damage during an uncontrolled descent and impact with terrain, about 55 miles northwest of Kenai, Alaska. The airplane was being operated by the private pilot as a visual flight rules (VFR) personal flight under Title 14, CFR Part 91, when the accident occurred. The pilot and sole passenger were not injured. Visual meteorological conditions prevailed, and no flight plan was filed. The flight departed a private airstrip near Soldotna, Alaska, about 1130. During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC) on November 9, the pilot said that he and his passenger flew to the area west of Kenai to look for areas to trap during the upcoming season. He said they were cruising west, about 1,000 above ground level (agl) into a strong headwind, and that his global positioning system (GPS) was indicating a ground speed of 60 knots. He said he made a 180-degree turn to the east, and was indicating a ground speed of 128 knots. The pilot said he turned to the north, and encountered a crosswind that rolled the airplane inverted. He said he righted the airplane, but the crosswind rolled the airplane inverted a second time. The pilot said as he righted the airplane again, a downdraft pushed it into the treetops. He said the right wing struck Alder trees, and the airplane struck the ground. He said there were no mechanical problems with the airplane prior to the accident. The pilot said he had received a preflight weather briefing from Kenai Flight Service, and that the winds in the departure area were light. He said there was no turbulence crossing Cook Inlet, but he could see dust blowing up from the riverbeds near the mountains to the north and west. The closest weather reporting station to the accident site, the automated weather station (PALV) at Big River Lakes, Alaska, 10 miles west of the accident site, reported at 2350Z: wind 270 degrees at 15 knots, gusting to 30 knots. The pilot did not submit an NTSB accident report as requested.

Aircraft

Registration
N5268X
Reported as
Champion 7GCBC
Category
Airplane
Serial number
193
Engine
Lycoming O-320 SERIES, 180 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Dilley Joseph Campbell
Registered owner
Dilley Joseph Campbell
Airworthiness certificate
Standard, Normal
Departed
Soldotna, AK
Destination
Soldotna, AK

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
Private
Airplane ratings
Single-engine land
Medical
Class 3, With waivers/limitations
Seat
Front
Flight hours
80 total

Weather

Conditions
Visual (VMC) · Day
Wind
270° at 15 knots, gusting 30
Visibility
10 statute miles
Lowest ceiling
10,000 ft broken
Temperature
32 °F, dew point 19 °F
Altimeter
28.85 inHg
Observed at
PALV, 10 nm away

Docket · 1

The files NTSB released with the investigation on May 28, 2010, on NTSB’s docket system: statements, records, photos and specialists’ reports. 44 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.