20030820021559A

Accident · Substantial damage

FAA accident report · Boeing A75 · Onalaska, WI · August 20, 2003

Date: August 20, 2003 · 10:15 local
Place: Onalaska, WI
Phase of flight: Descent
Operating rules: General operating rules (Part 91)
Damage: Substantial damage
Aircraft: N806RB
NTSB investigation: NTSBCHI03LA274
Reported as: Boeing A75
Reported engine: Pratt & Whitney R985*
People aboard: 1
Fatal injuries: 0
Pilot’s flight hours: 17,525 total10,780 in this make and model168 in the last 90 days

N806RBRegistered now · Boeing A75S/N 75-4000 · Built 1942 Airframe modelBoeing A75 Engine modelPratt & Whitney R-985 seriesReciprocating

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.

(-23) On descent in lse airport engine began to shake hard, pilot retarded throttle and engine suddenly stopped. Landing initiated 3 miles north of lse airport in cornfield. Upon touchdown aircraft flipped over causing damage to wings and tail. Approximately 12 gallons of fuel were drained from aircraft after retrieving it from field. Engine teardown at covington aircraft engines, okmulgee, OK, revealed the crankshaft was broken in two pieces.

As the FAA filed it

(-23) ON DESCENT IN LSE AIRPORT ENGINE BEGAN TO SHAKE HARD, PILOT RETARDED THROTTLE AND ENGINE SUDDENLY STOPPED. LANDING INITIATED 3 MILES NORTH OF LSE AIRPORT IN CORNFIELD. UPON TOUCHDOWN AIRCRAFT FLIPPED OVER CAUSING DAMAGE TO WINGS AND TAIL. APPROXIMATELY 12 GALLONS OF FUEL WERE DRAINED FROM AIRCRAFT AFTER RETRIEVING IT FROM FIELD. ENGINE TEARDOWN AT COVINGTON AIRCRAFT ENGINES, OKMULGEE, OK, REVEALED THE CRANKSHAFT WAS BROKEN IN TWO PIECES.

NTSB investigation

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

NTSB CHI03LA274Accident · No injuriesLimited investigationFinal reportLa Crosse, WIThe total loss of engine power due to a fatigue fracture of the engine's crankshaft. A factor was the corn crop.Aug 20, 2003 · Substantial damage