WPR14CA162

NTSB accident investigation · Cessna 207 · Shaw Island, WA · April 8, 2014

Accident · No injuriesData collectionFinal report
Date
April 8, 2014, 11:26 local (18:26 UTC)
Place
Shaw Island, WA
Injuries
2 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N685SCessna 207
Defining event
Landing-flare/touchdown: Loss of control in flight
Weather
Visual (VMC) · Day
Status
Completed · report June 18, 2014
Report
Approved by Office Director
NTSB office
Western Pacific Region
Parties
Federal Aviation Administration FSDO
FAA report
20140408003789A
Case key
89035

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 loss of directional control during the landing flare with a gusting tailwind.

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 207: 4 casesAll aircraft: 3,958 casesProbable cause
Use of equip/info: aircraft controlPersonnel issues › Task performance · PilotCessna 207: 7 casesAll aircraft: 9,295 casesProbable cause
Wind: gustsEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 207: 1 caseAll aircraft: 1,199 cases
Wind: tailwindEnvironmental issues › Conditions/weather/phenomena · Effect on operationCessna 207: 1 caseAll aircraft: 594 cases
Object/animal/substance: debris/dirt/foreign objectEnvironmental issues › Physical environment · Contributed to outcomeCessna 207: 1 caseAll aircraft: 101 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

During the landing flare on the uphill runway of the private grass airstrip, the airplane encountered a quartering tailwind gust causing it to shift left of the centerline. The pilot applied corrective control inputs avoiding a ditch; however, the left horizontal stabilizer struck a rock berm. The airplane sustained substantial damage to the horizontal stabilizer and elevator during the accident sequence. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The airstrip was comprised of grass and gravel, and was wet at the time of the accident.

Factual narrative

During the landing flare on the uphill runway of the private grass airstrip, the airplane encountered a quartering tailwind gust causing it to shift left of the centerline. The pilot applied corrective control inputs avoiding a ditch; however, the left horizontal stabilizer struck a rock berm. The airplane sustained substantial damage to the horizontal stabilizer and elevator during the accident sequence. The pilot reported no preimpact mechanical malfunctions or failures with the airplane that would have precluded normal operation. The airstrip was comprised of grass and gravel, and was wet at the time of the accident.

Aircraft

Registration
N685S
Reported as
Cessna 207
Category
Airplane
Serial number
20700184
Built
1970
Airframe hours
19,106
Engine
Cont Motor IO 520 SERIES, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
Aircraft Adventures LLC, doing business as Northwest Skyferry/San Juan Airlines
Registered owner
Aircraft Adventures LLC
Airworthiness certificate
Standard, Normal
Last inspection
Annual · January 30, 2014 · 33 hours before
Departed
FHR · Friday Harbor, WA
Destination
PVT · Shaw Island, WA
Flight plan
Company VFR
Airport
PVT · Shaw Island, runway 01, 1,750 × 30 ft, gravel
Equipment
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
71
Injuries
None
Certificates
Commercial, Airline transport, Flight engineer
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, With waivers/limitations
Last flight review
March 17, 2014
Seat
Left
Restraint
3-point
Flight hours
28,000 total · 16 in this make and model · 22,000 as pilot in command · 94 in the last 90 days · 36 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
Variable at 3 knots
Visibility
8 statute miles
Lowest ceiling
5,000 ft broken
Temperature
54 °F, dew point 52 °F
Altimeter
29.96 inHg
Observed at
BLI, 25 nm away

Docket · 4

The files NTSB released with the investigation on June 4, 2014, on NTSB’s docket system: statements, records, photos and specialists’ reports. 7.9 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.