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20001110038869A

Accident · No damage
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FAA accident report · Cessna 425 · Idaho Falls, ID · November 10, 2000

FAA Aviation Safety Information Portal

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Date
November 10, 2000 · 12:15 local
Place
Idaho Falls, ID
Airport
Fanning Field
Operating rules
General operating rules (Part 91)
Damage
No damage
Aircraft
N41054
NTSB investigation
NTSBSEA01FA017
Reported as
Cessna 425
People aboard
2
Fatal injuries
2
N41054Registration cancelled Nov 14, 2006 · Cessna 425S/N 425-0172Airframe modelCessna 425

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 November 10, 2000, at approx. 1215 MDT, a Cessna 425, N41054, operated by Mr. Jim d. jorgensen sustained substantial damage when it collides with terrain while operationally testing the auto-feather system. The accident occurred approx. 2 miles north of Fanning Field, Idaho Falls, Idaho. The airline transport pilot and airline transport pilot/passenger were fatally injured. Visual meteorological conditions prevailed and no flight plan had been filed for the operational check flight conducted under title 14 CFR part 91. The purpose of the flight was to verify proper in-flight operation of the auto-feather system following maintenance work on the auto-feather pressure switches. Teh ground check of the auto-feather system was successful. Inspection of the accident site revealed the left propeller had separated from the left engine and appeared to be in the feathered position. The right propeller was still mounted to the right engine less one blade, which was buried approx. eight inches in the frozen ground. The cockpit auto-feather swithc was found in the off position. Both propeller levers were found in the full forward position.

As the FAA filed it

(-23) ON NOVEMBER 10, 2000, AT APPROX. 1215 MDT, A CESSNA 425, N41054, OPERATED BY MR. JIM D. JORGENSEN SUSTAINED SUBSTANTIAL DAMAGE WHEN IT COLLIDES WITH TERRAIN WHILE OPERATIONALLY TESTING THE AUTO-FEATHER SYSTEM. THE ACCIDENT OCCURRED APPROX. 2 MILES NORTH OF FANNING FIELD, IDAHO FALLS, IDAHO. THE AIRLINE TRANSPORT PILOT AND AIRLINE TRANSPORT PILOT/PASSENGER WERE FATALLY INJURED. VISUAL METEOROLOGICAL CONDITIONS PREVAILED AND NO FLIGHT PLAN HAD BEEN FILED FOR THE OPERATIONAL CHECK FLIGHT CONDUCTED UNDER TITLE 14 CFR PART 91. THE PURPOSE OF THE FLIGHT WAS TO VERIFY PROPER IN-FLIGHT OPERATION OF THE AUTO-FEATHER SYSTEM FOLLOWING MAINTENANCE WORK ON THE AUTO-FEATHER PRESSURE SWITCHES. TEH GROUND CHECK OF THE AUTO-FEATHER SYSTEM WAS SUCCESSFUL. INSPECTION OF THE ACCIDENT SITE REVEALED THE LEFT PROPELLER HAD SEPARATED FROM THE LEFT ENGINE AND APPEARED TO BE IN THE FEATHERED POSITION. THE RIGHT PROPELLER WAS STILL MOUNTED TO THE RIGHT ENGINE LESS ONE BLADE, WHICH WAS BURIED APPROX. EIGHT INCHES IN THE FROZEN GROUND. THE COCKPIT AUTO-FEATHER SWITHC WAS FOUND IN THE OFF POSITION. BOTH PROPELLER LEVERS WERE FOUND IN THE FULL FORWARD POSITION.

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 SEA01FA017Accident · 2 fatalField investigationFinal reportIdaho Falls, IDThe pilot-in-command's failure to maintain adequate airspeed with an asymmetric thrust condition, resulting in a loss of aircraft control. A factor was an asymmetric engine thrust condition, which was present for undetermined reasons.Nov 10, 2000 · Substantial damage