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20010828024169A

Accident · No damage
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FAA accident report · Scwzer G164B · Rayville, LA · August 28, 2001

FAA Aviation Safety Information Portal

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Date
August 28, 2001 · 16:45 local
Place
Rayville, LA
Operating rules
Agricultural (Part 137)
Operator
B3BG
Damage
No damage
Aircraft
N2LU
NTSB investigation
NTSBFTW01LA193
Reported as
Scwzer G164B
N2LURegistered now · Gulfstream-Schweizer A/C GULFSTREAM AM G-164BS/N 595BAirframe modelGulfstream-Schweizer A/C GULFSTREAM AM G-164BEngine 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) During aerial application, the pilot completed a pass and began to pull up. A single backfire was heard and the pilot continued his climb to 200-300 feet. He circled for a few minutes and the engine was running normal. The pilot then made another pass over the field. After this pass, the engine began to backfire and run rough with little power output. A landing in the field was attempted and the main gear sunk in soft dirt and the aircraft flipped over on its back. Visual inspection revealed a sheared simms coupling on the right magneto. The coupling was sheared on the magneto side. The magneto was disassembled and small slivers of metal was found in and around the amature. Scoring was found on the armature. One of the slivers was placed between the armature and coil resulting in immediated binding of the armature. The source of the metal could not be determined and no other defects in the magneto were found. The evidence indicates that the metal entered the armature and coil causing it to bind and shear the coupling. The magneto jumped timing and fired randomly causing the engine loss of power.

As the FAA filed it

(-23) DURING AERIAL APPLICATION, THE PILOT COMPLETED A PASS AND BEGAN TO PULL UP. A SINGLE BACKFIRE WAS HEARD AND THE PILOT CONTINUED HIS CLIMB TO 200-300 FEET. HE CIRCLED FOR A FEW MINUTES AND THE ENGINE WAS RUNNING NORMAL. THE PILOT THEN MADE ANOTHER PASS OVER THE FIELD. AFTER THIS PASS, THE ENGINE BEGAN TO BACKFIRE AND RUN ROUGH WITH LITTLE POWER OUTPUT. A LANDING IN THE FIELD WAS ATTEMPTED AND THE MAIN GEAR SUNK IN SOFT DIRT AND THE AIRCRAFT FLIPPED OVER ON ITS BACK. VISUAL INSPECTION REVEALED A SHEARED SIMMS COUPLING ON THE RIGHT MAGNETO. THE COUPLING WAS SHEARED ON THE MAGNETO SIDE. THE MAGNETO WAS DISASSEMBLED AND SMALL SLIVERS OF METAL WAS FOUND IN AND AROUND THE AMATURE. SCORING WAS FOUND ON THE ARMATURE. ONE OF THE SLIVERS WAS PLACED BETWEEN THE ARMATURE AND COIL RESULTING IN IMMEDIATED BINDING OF THE ARMATURE. THE SOURCE OF THE METAL COULD NOT BE DETERMINED AND NO OTHER DEFECTS IN THE MAGNETO WERE FOUND. THE EVIDENCE INDICATES THAT THE METAL ENTERED THE ARMATURE AND COIL CAUSING IT TO BIND AND SHEAR THE COUPLING. THE MAGNETO JUMPED TIMING AND FIRED RANDOMLY CAUSING THE ENGINE LOSS OF POWER.

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 FTW01LA193Accident · No injuriesLimited investigationFinal reportRayville, LAthe partial failure of the magneto drive coupling while maneuvering, which resulted in a loss of engine power and a forced landing. A contributing factor to the accident was the lack of suitable terrain for the forced landing.Aug 28, 2001 · Substantial damage

Other reports on N2LU · 3

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

Accident 20110527015879ACruise/Level Flight · Oak Ridge, LAWhile in turn over woods aircraft loss power, settled into trees.May 27, 2011 · Substantial damageIncident 20030711014459INormal Cruise · Rayville, LA(-23) Pilot was practicing GPS approaches and while over a field at about 600 feet, the engine quit. The pilot made a 160 degree turn back towards the airport (Rayville), the aircraft lost substantial altitude and landed in a freshly plowed field and tore the…Jul 11, 2003 · Minor damageAccident 19971124034879AClimb · Lecompte, LAAcft stalled on take off and struck trees. Lecompte, LA. (.4)during the initial climb, at about 50 to 75 feet AGL, the instructor noticed that the airspeed was decaying, and he recalled telling the student several times to push forward on the controls. As the…Nov 24, 1997 · Substantial damage