GAA17CA388

NTSB accident investigation · Cessna 207 · Hope, AK · July 3, 2017

Accident · No injuriesData collectionFinal report
Date
July 3, 2017, 10:32 local (18:32 UTC)
Place
Hope, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Maneuvering
Aircraft
N9620MCessna 207
Defining event
Maneuvering-low-alt flying: Loss of visual reference
Weather
Instrument (IMC) · Day
Status
Completed · report December 15, 2017
Report
Approved by Office Director
NTSB office
General Aviation Accidents
Parties
FAA
FAA report
20170703010789A
Case key
95508

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 inadvertent flight into instrument meteorological conditions and subsequent controlled flight into terrain.

Findings · 4

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.

Ceiling/visibility/precip: low visibilityEnvironmental issues › Conditions/weather/phenomena · Effect on personnelCessna 207A: 1 caseAll aircraft: 175 casesProbable cause
Ceiling/visibility/precip: cloudsEnvironmental issues › Conditions/weather/phenomena · Effect on personnelCessna 207A: 1 caseAll aircraft: 108 casesProbable cause
Object/animal/substance: tree(s)Environmental issues › Physical environment · Effect on operationCessna 207A: 2 casesAll aircraft: 933 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

According to the pilot, he was flying the second airplane in a flight of two about 1 mile behind the lead airplane. The lead airplane pilot reported to him, via the airplane's radio, that he had encountered decreasing visibility and that he was making a 180° left turn to exit the area. The pilot recalled that, after losing sight of the lead airplane, he made a shallow climbing right turn and noticed that the terrain was rising. He recalled that he entered the clouds for a few seconds and "at that moment I ran into the trees which I never saw coming." The airplane sustained substantial damage to both wings. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that the temperature was 60°F with 8 miles visibility and 1,500-ft ceilings. The nearest METAR was about 1 mile away and reported that the temperature was 54°F, dew point was 52°F, visibility was 8 statute miles with light rain, and ceiling was broken at 500 ft and overcast at 1,500 ft.

Factual narrative

According to the pilot, he was flying the second airplane in a flight of two, about one mile behind the lead airplane. The lead airplane pilot reported to him, via the airplane's radio, that he encountered decreasing visibility, and that he was making a 180° turn to the left to exit the area. The pilot recalled that after losing sight of the lead airplane, he made a shallow climbing turn to the right and noticed that the terrain was rising. He recalled that he entered the clouds for a few seconds and, "At that moment I ran into the trees which I never saw coming." The airplane sustained substantial damage to both wings. The pilot reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot reported that the temperature was 60° Fahrenheit with 8 miles visibility and 1,500-foot ceilings. The nearest METAR was about 1 mile away and reported that the temperature was 54° Fahrenheit and the dew point was 52° Fahrenheit. The visibility was 8 statute miles with light rain. The ceiling was broken at 500 feet and overcast at 1,500 feet.

Aircraft

Registration
N9620M
Reported as
Cessna 207 (A)
Category
Airplane
Serial number
20700711
Built
1981
Airframe hours
23,833.1
Engine
Cont Motor IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Personal · Part 91
Operator
Alaska Air Taxi LLC
Registered owner
Alaska Air Taxi LLC
Airworthiness certificate
Standard, Normal
Departed
Paso · Seldovia, AK
Destination
Z41 · Anchorage, AK
Equipment
Handheld GPS, Stall warning system

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
64
Injuries
None
Certificate
Private
Airplane ratings
Single-engine land
Instrument ratings
Airplane
Medical
Class 3, With waivers/limitations
Last flight review
February 16, 2016
Seat
Left
Restraint
3-point
Flight hours
5,365 total · 3 in this make and model · 5,247 as pilot in command · 35 in the last 90 days · 11 in the last 30 days

Weather

Conditions
Instrument (IMC) · Day
Wind
280° at 7 knots
Lowest ceiling
500 ft broken
Temperature
54 °F, dew point 52 °F
Observed at
PANC, 1 nm away

Docket · 3

The files NTSB released with the investigation on November 7, 2017, on NTSB’s docket system: statements, records, photos and specialists’ reports. 3.8 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.