ANC98LA056

NTSB accident investigation · Cessna 207 · Quinhagak, AK · May 22, 1998

Accident · No injuriesLimited investigationFinal report
Date
May 21, 1998, 16:30 local (May 22, 1998, 00:30 UTC)
Place
Quinhagak, AK
Injuries
3 uninjured
Damage
Substantial damage
Phase of flight
Takeoff
Aircraft
N755ABCessna 207
Weather
Visual (VMC) · Day
Status
Completed · report November 17, 1999
Report
Approved by Office Director
NTSB office
Alaska Regional Office
FAA report
19980521014839A
Case key
3144

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

On this page

Probable cause

The pilot's failure to maintain directional control of the airplane, and his premature liftoff, resulting in a collision with a runway light fixture. Factors in the accident were wet runway conditions, and a rough and uneven runway surface with potholes.

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.

In flight collision with objectTakeoff
Object - runway light
Airport facilities,runway/landing area condition - wetFactor
Directional control - not maintainedPilot in commandCause
Airport facilities,runway/landing area condition - rough/unevenFactor
Lift-off - prematurePilot in commandCause

Analysis

The pilot was departing a rural village runway with two passengers on an air taxi flight. The center of the runway surface had numerous puddles of water. During the takeoff roll, the left main wheel entered a mud puddle, and the airplane veered to the left. The pilot corrected to the right, and raised the airplane's nose to lift off into ground effect, and avoid any more areas of water. The airplane descended slightly, and the pilot lowered the nose to gain airspeed. The airplane climbed away from the runway, and the pilot continued to the destination airport. Upon landing, the pilot discovered damage to the outboard end of the left horizontal stabilizer. The operator reported the airplane struck a runway edge light. An FAA airworthiness inspector reported that the damage to the stabilizer would necessitate the replacement of the outboard nose rib. The Airport Facility Directory listing for the accident airport indicated that potholes were present along the entire length of the runway. The runway was graded about 2 weeks before the accident.

Factual narrative

On May 21, 1998, about 1630 Alaska daylight time, a Cessna 207 airplane, N755AB, sustained substantial damage during takeoff from the Quinhagak Airport, Quinhagak, Alaska. The airplane was being operated as a visual flight rules (VFR) scheduled passenger flight under Title 14 CFR Part 135, when the accident occurred. The airplane was operated by Yute Air Alaska Inc., Anchorage, Alaska. The certificated commercial pilot, and two passengers, were not injured. Visual meteorological conditions prevailed. VFR company flight following procedures were in effect.

The operator reported the pilot was departing runway 04 at Quinhagak. The center of the runway surface had numerous puddles of water. During the takeoff roll, the left main wheel entered a mud puddle, and the airplane veered to the left. The pilot corrected to the right, and raised the airplane's nose to lift off into ground effect, and avoid any more areas of water. The airplane descended slightly, and the pilot lowered the nose to gain airspeed. The airplane climbed away from the runway, and the pilot continued to the destination of Bethel, Alaska. Upon landing, the pilot discovered damage to the outboard end of the left horizontal stabilizer. The operator reported the airplane struck a runway edge light at Quinhagak.

On May 26, 1998, the operator's Director of Maintenance reported the company replaced the entire left stabilizer. On May 27, 1998, a Federal Aviation Administration (FAA) airworthiness inspector, Anchorage Flight Standards District Office (FSDO), reported the damage to the stabilizer would necessitate the replacement of the outboard nose rib.

The Alaska Supplement/Airport Facility Directory for Quinhagak states, in part: "Airport remarks - Unattended. Runway condition not monitored, recommend visual inspection prior to using. Potholes entire length of runway. Runway 04-22 marked with reflective cones and threshold panels, some are damaged and obscured by brush. Equipment occasionally on runway. Runway 04-22 may flood. North side of runway lined with sandbags. East edge of apron undercut by river washout."

On August 28, 1998, the manager of the Alaska Department of Transportation (AKDOT) office, Bethel, Alaska, reported that the Bethel office is responsible for 26 rural village airports. Runway maintenance is conducted by State of Alaska personnel on an as-needed basis. All of the runways are inspected each calendar quarter, but no firm schedule is established. Access to the villages, and the ability to conduct any runway grading, is weather and ground condition dependent. The Bethel office has two runway maintenance personnel, and one electrician. Runway conditions are usually reported to the State of Alaska by pilots of the air charter companies that fly into the villages. If State personnel cannot conduct runway maintenance at a particular village, the reported runway conditions are listed in FAA Notices to Airmen (NOTAMs).

The Bethel AKDOT office indicated a NOTAM was issued on May 4, 1998, that cautioned pilots about men and equipment working on the south 1,300 feet of the runway at Quinhagak. The NOTAM was put into effect for the purpose of grading the runway.

Aircraft

Registration
N755AB
Reported as
Cessna 207
Category
Airplane
Serial number
207-00622
Airframe hours
11,754
Engine
Continental IO-520-F, 300 horsepower, reciprocating
Damage
Substantial damage
Flight
Part 135
Registered owner
Yute Air Alaska Inc.
Airworthiness certificate
Standard, Normal
Last inspection
100 hour · May 12, 1998 · 43 hours before
Departed
AQH
Destination
BET · Bethel, AK
Flight plan
Company VFR
Airport
AQH · Quinhagak, runway 4, 2,600 × 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
28
Certificates
Flight instructor, Commercial
Airplane ratings
Multi-engine land, Single-engine land
Instrument ratings
Airplane
Medical
Class 1, Valid Medical--w/ waivers/lim
Seat
Left
Flight hours
1,000 total · 500 in this make and model · 800 as pilot in command · 270 in the last 90 days · 90 in the last 30 days · 4 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
290° at 5 knots
Visibility
10 statute miles
Lowest ceiling
3,000 ft broken
Temperature
46 °F

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 N755AB · 1

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