Service difficulty report · Buss Bar · Beech C90

Difficulty date
January 11, 2011
Submitted
January 28, 2011
Operation
General aviation
Aircraft
N232BG
Make and model
Beech C90
Aircraft serial
LJ1881
Engine
Pwa PT6A135A
Part
Buss Bar
Part number
101364084219
Condition
Arced
Location
Heat Switch
Stage of operation
CR
How discovered
O
Nature of condition
B
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

PILOT COMPLAINED OF INTERMITTENT POPPING OF STALL WARNING, RT PITOT HEAT, RECOGNITION LIGHT AND STROB LIGHT CIRCUIT BREAKER SWITCHES ON REMOVAL OF LT SUBPANEL REVEALED THAT THE BUSS BAR PN 101364084-219 WAS PHYSICALLY ATTACH TO THE STALL WARNING HEAT SWITCH. THE MAIN FEEDER WIRE PN P260A8 WAS ATTACHED TO THE SWITCH. THE BUS BAR WAS FOUND LAYING ON TOP OF THE SWITCH ATTACH SCREW AND EVENTUALLY STARTED ARCING AND POPPING THE CIRCUIT BREAKER SWITCHES DOWNSTREAM FOR IT. THE STALL WARNING HEAT SWITCH PN 7270-5-15 AND BUS BAR PN 101-364084-219 WERE REPLACED AND INSTALL PROPERLY.

More about the Beech C90