ANC00LA115

NTSB accident investigation · Cessna 207 · Kongiganak, AK · September 6, 2000

Accident · No injuriesLimited investigationFinal report
Date
September 6, 2000, 11:30 local (19:30 UTC)
Place
Kongiganak, AK
Injuries
1 uninjured
Damage
Substantial damage
Phase of flight
Landing
Aircraft
N9874MCessna 207
Weather
Visual (VMC) · Day
Status
Completed · report July 2, 2001
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
20000906042689A
Case key
50989

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 selection of an unsuitable, rough, runway. Factors were the crosswind, the pilot's inexperience, the company's inadequate surveillance of their operation, and dispatch of an inexperienced pilot to the unsuitable airport.

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.

On ground/water encounter with terrain/waterLanding - roll
Airport facilities,runway/landing area condition - rough/unevenFactor
Unsuitable terrain or takeoff/landing/taxi area - selectedPilot in commandCause
Lack of total experience in type operationPilot in commandFactor
Weather condition - crosswindFactor
Dispatch - information insufficientCompany/operator managementFactor
Inadequate surveillance of operationCompany/operator mgmtFactor
Loss of control - on ground/waterLanding - roll
Directional control - not possiblePilot in command

Analysis

The pilot, and a witness, estimated the winds to be from 270 degrees, gusting to 25 knots. After touchdown, the airplane hit a rut, bounced, and became airborne. The right wing came up, and the airplane departed the left side of the 1,880 feet long by 35 feet wide gravel runway. The airplane sustained substantial damage to the fuselage. The pilot, the witness, and company personnel, described the runway condition as extremely potholed and unsuitable. The Alaska Supplement states, in part: 'CAUTION: Rwy condition not monitored, recommend visual inspection prior to using. Rwy rough full length.' The company was concerned about the runway, but had not inspected it prior to the accident. The company terminated operations to the airport after the accident. This was the pilot's first revenue flight in Alaska, and for the company, and his first flight to this airport.

Factual narrative

On September 6, 2000, about 1130 Alaska daylight time, a Cessna 207 airplane, N9874M, sustained substantial damage during landing at the Kongiganak Airport, Kongiganak, Alaska. The solo commercial pilot was not injured. The flight was operated by Alaska Central Express, Inc., of Anchorage, Alaska. The flight was conducted under 14 CFR Part 135 as an on-demand cargo flight transporting mail. The flight departed Bethel, Alaska, at 1115 for the accident site. Visual meteorological conditions prevailed at the time of the accident, and a VFR flight plan was filed.

The pilot told the NTSB investigator-in-charge during a telephone interview on September 6, that he was landing on runway 18. He estimated the winds to be from 270 degrees gusting to 25 knots. After touchdown, the airplane hit a rut, bounced, and became airborne. The right wing came up, and the airplane departed the left side of the 1,880 feet long by 35 feet wide gravel runway. The airplane sustained substantial damage to the fuselage.

The pilot of another airplane observed the accident from the ramp area. He described a normal approach and touchdown, and a right crosswind gusting to 25 knots. He indicated the airplane contacted a water-filled rut and bounced. The right wing lifted, and the wind pushed the airplane off the left side of the runway. Postaccident inspection of the runway by the company resulted in termination of company services to the airport. The director of operations told the NTSB IIC that the company was concerned about the runway, but had not inspected it prior to the accident.

The pilot, the witness, and the company's director of operations, described the runway condition as extremely potholed, and unsuitable. The Alaska Supplement states, in part: "CAUTION: Rwy condition not monitored, recommend visual inspection prior to using. Rwy rough full length." The runway is not maintained by the State of Alaska, and the state and the community do not receive Federal funding for runway maintenance. This was the pilot's first revenue flight in Alaska, and for the company, and his first flight to this airport.

Aircraft

Registration
N9874M
Reported as
Cessna 207
Category
Airplane
Serial number
20700745
Airframe hours
13,225
Engine
Continental IO-520F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Alaska Central Express, Inc.
Airworthiness certificate
Standard, Normal
Last inspection
AAIP · September 5, 2000 · 2 hours before
Departed
BET · Bethel, AK
Destination
DUY
Flight plan
VFR
Airport
DUY · Kongiganak, runway 18, 1,880 × 35 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
31
Certificate
Commercial
Airplane ratings
Single-engine land, Multi-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--no waivers/lim.
Seat
Left
Flight hours
517 total · 17 in this make and model · 439 as pilot in command · 56 in the last 90 days · 17 in the last 30 days · 2 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
300° at 12 knots
Visibility
10 statute miles
Lowest ceiling
3,600 ft broken
Temperature
45 °F, dew point 39 °F
Altimeter
29.00 inHg
Observed at
BET, 14 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 N9874M · 1

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