ANC02LA128

NTSB accident investigation · Cessna 207 · Circle, AK · September 15, 2002

Accident · No injuriesLimited investigationFinal report
Date
September 15, 2002, 15:15 local (23:15 UTC)
Place
Circle, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N207DGCessna 207
Weather
Visual (VMC) · Day
Status
Completed · report June 25, 2003
Report
Approved by Office Director
NTSB office
Alaska Regional Office
Parties
FAA-AL-FAI FSDO 01
FAA report
20020915024549A
Case key
55847

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 inadequate wind evaluation during takeoff resulting in a downwind takeoff and subsequent overrun during an aborted takeoff. Factors in the accident were a tailwind and the pilot's failure to verify the selected flap setting.

Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

OverrunTakeoff - aborted
Weather evaluation - inadequatePilot in commandCause
Weather condition - tailwindFactor
Lowering of flaps - not verifiedPilot in commandFactor
On ground/water encounter with terrain/waterTakeoff - aborted
Terrain condition - muskeg
Nose gear collapsedTakeoff - aborted

Analysis

The commercial certificated pilot was departing runway 15 at an airport with a gravel surface runway that is 3,000 feet long by 60 feet wide. About 1,800 feet after beginning the takeoff run, about 65 knots indicated airspeed, the pilot raised the nose for lift-off, but the airplane did not become airborne. He then aborted the takeoff, and applied the brakes, but the airplane went off the end of the runway into an area of marshy tussock grass. The nose gear strut collapsed, and the airplane came to rest about 75 feet beyond the departure end of the runway. Following the accident, the pilot reported that as he left the airplane to call his company operations, he noticed the wind was favoring runway 33. When he returned to the airplane, he reported the wind was again favoring runway 15. The pilot also indicated that prior to takeoff, he selected 10 degrees of flaps. Following the accident, he noticed the flaps were only deployed to about 3 or 4 degrees of travel, even though the flap indicator was still set at 10 degrees. The pilot said he moved the flap lever several times up and down, but was only able to achieve 10 degrees of flap deployment by moving the flap lever to a 20 degree setting, before selecting a 10 degree setting. In the pilot's written report to the NTSB, he noted the airplane did not have any mechanical malfunction. In the safety recommendation portion of the report, the pilot noted that he could have visually verified the flap setting before takeoff.

Factual narrative

On September 15, 2002, about 1515 Alaska daylight time, a Cessna 207 airplane, N207DG, sustained substantial damage when the airplane went off the end of the runway during an aborted takeoff at the Circle City Airport, Circle, Alaska. The airplane was being operated as a visual flight rules (VFR) cross-country on-demand passenger flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated by 40 Mile Air LTD., Tok, Alaska. The commercial certificated pilot, and the two passengers, were not injured. Visual meteorological conditions prevailed, and a VFR flight plan was filed from Circle to Tok.

During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on September 15, the chief pilot for the operator reported that the pilot was departing runway 15 at Circle. About 1,800 feet after beginning the takeoff run, about 65 knots indicated airspeed, the pilot said he raised the nose for lift-off, but the airplane did not become airborne. He then aborted the takeoff, and applied the brakes, but the airplane went off the end of the runway into an area of marshy tussock grass. The nose gear strut collapsed, and the airplane came to rest about 75 feet beyond the departure end of the runway.

In a telephone conversation with the IIC on September 17, the pilot, who is the director of maintenance for the operator, indicated that prior to takeoff, he selected 10 degrees of flaps. Following the accident, he noticed the flaps were only deployed to about 3 or 4 degrees of travel, even though the flap indicator was still set at 10 degrees. The pilot said he moved the flap lever several times up and down, but was only able to achieve 10 degrees of flap deployment by moving the flap lever to a 20 degree setting, before selecting a 10 degree setting.

In the Pilot/Operator Aircraft Accident Report (NTSB Form 6120.1/2) submitted by the pilot, the pilot indicated that the airplane did not have any mechanical malfunction. In the optional safety recommendation portion of the report form, the pilot indicated that the "flap position could have been checked visually before takeoff." Also in the NTSB Form 6120.1/2, the pilot reported that following the accident, as he left the airplane to call his company operations, he noticed the wind was favoring runway 33. When he returned to the airplane, he reported the wind was again favoring runway 15.

On October 8, 2002, in a telephone conversation with the IIC, the pilot reported the airplane received damage to the lower engine cowling/fuselage structure, nose gear strut attach point/structure, lower firewall, and propeller.

Runway 15 at the Circle City Airport has a gravel surface, and is 3,000 feet long by 60 feet wide.

Aircraft

Registration
N207DG
Reported as
Cessna 207
Category
Airplane
Serial number
20700070
Airframe hours
9,821
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Operator
40 Mile Air Ltd.
Registered owner
Rwr Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · July 26, 2002 · 77 hours before
Departed
PACR · Circle, AK
Destination
PATJ · Tok, AK
Flight plan
VFR
Airport
PACR · Circle City, runway 15, 3,000 × 60 ft, gravel

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
45
Injuries
None
Certificate
Commercial
Airplane ratings
Single-engine sea, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--no waivers/lim.
Last flight review
August 1, 2002
Seat
Left
Flight hours
1,300 total · 107 in this make and model · 1,260 as pilot in command · 95 in the last 90 days · 49 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
150° at 3 knots, gusting 7
Visibility
100 statute miles
Lowest ceiling
None
Temperature
61 °F

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.