- Date
- February 24, 2002, 18:30 local (22:30 UTC)
- Place
- Tununak, AK
- Injuries
- 1 uninjured
- Damage
- Substantial damage
- Phase of flight
- Taxi
- Aircraft
- N454SFCessna 208B
- Weather
- Visual (VMC) · Day
- Status
- Completed · report June 4, 2002
- Report
- Approved by Office Director
- NTSB office
- Alaska Regional Office
- Parties
- Fairbanks FSDO
- FAA report
- 20020224015219A
- Case key
- 54285
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 selection of unsuitable terrain for landing. Factors associated with the accident are snow drifts across the runway, and excessive braking during the rearward roll.
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.
Analysis
During the landing roll, the pilot braked to a stop with the nose wheel atop a snow drift. The pilot released the brakes and the airplane rolled backward. When the pilot reapplied the brakes the aircraft rocked rearward, pivoting on the main landing gear, and the tail struck the ground, damaging two fuselage bulkheads.
Factual narrative
On February 24, 2002, about 1830 Alaska standard time, a wheel-equipped Cessna 208B airplane, N454SF, sustained substantial damage during taxi, after landing at the Tununak Airport, Tununak, Alaska. The airplane was being operated as a visual flight rules (VFR) cargo flight under Title 14, CFR Part 135, when the accident occurred. The airplane was operated by Grant Aviation, Inc. of Anchorage, Alaska. The solo certificated airline transport pilot was not injured. The flight originated at the Bethel Airport, Bethel, Alaska, about 1750.
During a telephone conversation with the National Transportation Safety Board (NTSB) investigator-in-charge (IIC), on February 25, the director of operations for the operator reported that while en route to the Tununak airport the pilot had received a pilot report, stating that only half of the length of the 2,010 foot runway was plowed. When the pilot braked to a stop on the runway, the nose wheel of the airplane stopped on a snowdrift crossing the runway. When he released the brakes, the airplane started to roll backward off the snowdrift. When he reapplied the brakes to stop the roll, the airplane rocked rearward, pivoting on the main landing gear, and the tail struck the snow-covered ground. The pilot inspected the airplane and found that the tail tie down ring and the aft fuselage bulkhead were damaged.
During a telephone conversation with the IIC on March 4, the director of maintenance reported that the two furthest-aft fuselage bulkheads (Station 474.4 and 475.88), and the tail tie down ring and doublers, were replaced due to the damage received in the accident. He said the airplane had no known mechanical problems or damage prior to the accident.
Aircraft
- Registration
- N454SF
- Reported as
- Cessna 208B
- Category
- Airplane
- Serial number
- 208B0797
- Airframe hours
- 2,499.5
- Engine
- P&W Canada PT6A-114A, 675 horsepower, turbo prop
- Damage
- Substantial damage
- Flight
- Part 135
- Registered owner
- Grant Aviation, Inc.
- Airworthiness certificate
- Standard, Normal
- Last inspection
- AAIP · January 3, 2002 · 95.8 hours before
- Departed
- PABE · Bethel, AK
- Destination
- 4KA · Tununak, AK
- Flight plan
- Company VFR
- Airport
- 4KA · Tununak, runway 08, 2,010 × 40 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
- 30
- Injuries
- None
- Certificates
- Flight instructor, Commercial
- Airplane ratings
- Single-engine land, Single-engine sea, Multi-engine land
- Instrument ratings
- Airplane
- Medical
- Class 1, Valid Medical--w/ waivers/lim
- Last flight review
- February 24, 2002
- Seat
- Left
- Flight hours
- 4,136 total · 1,537 in this make and model · 4,070 as pilot in command · 103 in the last 90 days · 69 in the last 30 days · 3 in the last 24 hours
Weather
- Conditions
- Visual (VMC) · Day
- Wind
- 130° at 10 knots
- Visibility
- 10 statute miles
- Lowest ceiling
- 3,000 ft overcast
Docket · 1
The files NTSB released with the investigation on May 15, 2002, on NTSB’s docket system: statements, records, photos and specialists’ reports. 426 KB 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.
Other investigations on N454SF · 3
Matched to the same aircraft by N-number and date.