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20050822017749A

Accident · Substantial damage
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FAA accident report · Bbavia 7KCAB · Richland, WA · August 22, 2005

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Date
August 22, 2005 · 08:30 local
Place
Richland, WA
Phase of flight
Level Off Touchdown
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N7546F
Reported as
Bbavia 7KCAB
Reported engine
Lycoming IO320*
People aboard
1
Fatal injuries
0
Pilot’s flight hours
677 total302 in this make and model56 in the last 90 days
N7546FRegistered now · Champion 7KCABS/N 287-70 · Built 1969Airframe modelChampion 7KCABEngine modelLycoming IO-320 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 engine teardown, it was discovered that the engine oil pressure line fitting on the engine gear case was loose and allowed the escape of all the engine oil. The loss of lubrication led to and caused the total failure of the #4 piston rod bearing. This was evidenced by the distribution of the remains of the babbit bearing and steel backing of the bearing assembly. Metal remains of the bearing assembly were evident throughout the engine. The pilot elected to land in an open field. The aircraft came to a stop upside down with substantial damage.

As the FAA filed it

(-23) ON ENGINE TEARDOWN, IT WAS DISCOVERED THAT THE ENGINE OIL PRESSURE LINE FITTING ON THE ENGINE GEAR CASE WAS LOOSE AND ALLOWED THE ESCAPE OF ALL THE ENGINE OIL. THE LOSS OF LUBRICATION LED TO AND CAUSED THE TOTAL FAILURE OF THE #4 PISTON ROD BEARING. THIS WAS EVIDENCED BY THE DISTRIBUTION OF THE REMAINS OF THE BABBIT BEARING AND STEEL BACKING OF THE BEARING ASSEMBLY. METAL REMAINS OF THE BEARING ASSEMBLY WERE EVIDENT THROUGHOUT THE ENGINE. THE PILOT ELECTED TO LAND IN AN OPEN FIELD. THE AIRCRAFT CAME TO A STOP UPSIDE DOWN WITH SUBSTANTIAL DAMAGE.