Service difficulty report · Brushes · Pilats PC1245

Difficulty date
December 15, 2000
Submitted
January 19, 2001
Operation
Air carrier
Make and model
Pilats PC1245
Aircraft time
2,023 hours
Part
Brushes
Part number
9789601090
Condition
Worn
Location
Nr 2 Generator
Part time
30 cycles
Component
Generator 2 · Pilats · 5243212158
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

(CAN) GEN 2 WOULD GO OFF LINE WHEN PROBE HEAT SELECTED. FOUND GEN 2 BRUSHES WORN AS WELL AS WEAR ON COMMUTATOR. UNDER HEAVY LOAD THIS CAUSED GEN 2 TO GO OFF LINE. THESE ARE THE NEW AND IMPROVED BRUSHES THAT WERE INSTALLED TO COMPENSATE FOR THE OLD BRUSHES WEARING OUT PREMATURLY. THESE NEW AND IMPROVED BRUSHES WEAR OUT FASTER THAN THE OLD ONES. WE HAVE NOT HAD A SET OF NEW BRUSHES GO MOR THAN 300 HOURS YET. THE LIFE OF THESE BRUSHES IS SET AT 3000 HOURS AT THE PRESENT.