SEA98LA157

NTSB accident investigation · Cessna U206F · Stanley, ID · August 7, 1998

Accident · No injuriesLimited investigationFinal report
Date
August 7, 1998, 07:30 local (13:30 UTC)
Place
Stanley, ID
Injuries
6 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N7494QCessna U206F
Weather
Visual (VMC) · Day
Status
Completed · report January 11, 2000
Report
Approved by Office Director
FAA report
19980807020039A
Case key
43713

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-in-command's not lowering flaps prior to takeoff and overload of the nose landing gear. Contributing factors were high density altitude conditions and high brush.

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.

Loss of control - on ground/waterTakeoff - roll/run
Weather condition - high density altitudeFactor
Lowering of flaps - not performedPilot in commandCause
Gear collapsedTakeoff - roll/run
Terrain condition - high vegetationFactor
Landing gear,nose gear - overloadCause

Analysis

The pilot-in-command reported that 'I had tried to take off with no flaps, thinking I had them down.' The aircraft never became fully airborne, passed through a perimeter fence and then collided with sagebrush during which the nose landing gear collapsed. Post crash examination of the aircraft revealed the flaps in the retracted position. The density altitude at the 4,300 foot long, turf airstrip was 7,325 feet.

Factual narrative

On August 7, 1998, approximately 0730 mountain daylight time, a Cessna U206F, N7494Q, registered to and being operated by Stanley Air Taxi, Inc., and being flown by a commercial pilot, incurred substantial damage when it departed runway 17, and the nose landing gear collapsed on takeoff at the Stanley airport, Stanley, Idaho. The pilot and all five passengers were uninjured. Visual meteorological conditions prevailed and a company VFR flight plan was in effect. The flight, which was an unscheduled passenger flight from Stanley to Indian Creek, Idaho, was to have been operated under 14CFR135.

The pilot reported that "On the take-off roll, I used the left side of the runway in the grass, since the middle had become rough from use. At about 2,000 feet down the runway, the plane hit a bump that put it into the air, but it settled back to the ground. I then applied elevator to lift it off. The plane hit another bump, lifted off the runway, the right wing dipped, I corrected, the plane again settled back onto the runway, and veered off the runway and through the east fence (at about 3,000 feet down the strip). The plane was on all 3 wheels for a short distance, until it hit a large sage brush and collapsed the nose gear. The plane then went nose down and stopped."

Additionally, he reported that "In my own mind, I had put the flaps down on the C206 for take-off. They were not down. I had tried to take off with no flaps, thinking I had them down. (I believe I was distracted.) The plane did not have the speed nor lift when I rotated it. Proper check list utilization would have prevented the accident."

On site examination of the aircraft at the site revealed that the flaps were in the retracted position (refer to photograph 1).

The elevation of the Stanley airport is 6,403 feet above mean sea level. Runway 17 is 4,300 foot long and composed of turf. The pilot estimated the temperature at the time of the accident as 55 degrees Fahrenheit and reported an altimeter setting of 30.20 inches mercury. The calculated density altitude based on this information was 7,325 feet.

Aircraft

Registration
N7494Q
Reported as
Cessna U206F
Category
Airplane
Serial number
U20602224
Airframe hours
7,595
Engine
Continental IO-520-F(9), 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Stanley Air Taxi, Inc.
Airworthiness certificate
Standard, Utility
Last inspection
AAIP · July 25, 1998 · 30 hours before
Departed
2U7
Destination
S81 · Indian Creek, ID
Flight plan
Company VFR
Airport
2U7 · Stanley, runway 17, 4,300 × 150 ft, grass/turf

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
56
Certificate
Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 2, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,227 total · 8 in this make and model · 1,144 as pilot in command · 110 in the last 90 days · 55 in the last 30 days · 5 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
50° at 3 knots
Visibility
10 statute miles
Lowest ceiling
None
Temperature
57 °F, dew point 52 °F
Altimeter
30.00 inHg
Observed at
MYL, 63 nm away

FAA reports on this event · 1

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

Other investigations on N7494Q · 1

Matched to the same aircraft by N-number and date.