20100119026049A

Accident · Substantial damage

FAA accident report · Cessna 172M · Bethel, AK · January 19, 2010

Date
January 19, 2010 · 09:40 local
Place
Bethel, AK
Airport
Bethel Airport
Phase of flight
Takeoff: Departure Roll
Operating rules
Air taxi and commuter (Part 135)
Operator
YAAA
Damage
Substantial damage
Aircraft
N20109
NTSB investigation
NTSBANC10LA013
Reported as
Cessna 172M
Reported engine
Lycoming 0-320 series
People aboard
3
Fatal injuries
0
Other injuries
0
Pilot’s certificates
Commercial pilot, flight instructor
Pilot’s flight hours
1,200 total600 in this make and model150 in the last 90 days

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

The aircraft was attempting a soft-field takeoff using rwy 1L at the Bethel Airport when the aircraft yawed and banked violently to the left just as the nose wheel started to rise slightly. The aircraft veered 90 degrees and continued into the grassy section to the left of the runway. The aircraft came to rest between the runway and the taxiway. The pilot stated in his written report that it felt like the left main had encountered an extreme amount of drag just prior to yawing and banking violently to the left. The aircraft sustained significant dame to the propeller, engine (sudden stoppage), engine firewall and supporting structure, and lower fuselage frames, skins, stringers.

As the FAA filed it

THE AIRCRAFT WAS ATTEMPTING A SOFT-FIELD TAKEOFF USING RWY 1L AT THE BETHEL AIRPORT WHEN THE AIRCRAFT YAWED AND BANKED VIOLENTLY TO THE LEFT JUST AS THE NOSE WHEEL STARTED TO RISE SLIGHTLY. THE AIRCRAFT VEERED 90 DEGREES AND CONTINUED INTO THE GRASSY SECTION TO THE LEFT OF THE RUNWAY. THE AIRCRAFT CAME TO REST BETWEEN THE RUNWAY AND THE TAXIWAY. THE PILOT STATED IN HIS WRITTEN REPORT THAT IT FELT LIKE THE LEFT MAIN HAD ENCOUNTERED AN EXTREME AMOUNT OF DRAG JUST PRIOR TO YAWING AND BANKING VIOLENTLY TO THE LEFT. THE AIRCRAFT SUSTAINED SIGNIFICANT DAME TO THE PROPELLER, ENGINE (SUDDEN STOPPAGE), ENGINE FIREWALL AND SUPPORTING STRUCTURE, AND LOWER FUSELAGE FRAMES, SKINS, STRINGERS.

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

Other reports on N20109 · 2

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