Service difficulty report · Pump · Gulstm G150

Difficulty date
December 28, 2019
Submitted
December 28, 2019
Operation
General aviation
Aircraft
N150PG
Make and model
Gulstm G150
Aircraft serial
305
Aircraft time
1,057 hours, 693 cycles
Engine
Hnywl TFE73140AR
Engine time
1,057 hours, 693 cycles
Part
Pump
Part number
30607591
Part serial
1778
Condition
Defective
Location
Zone 400
Stage of operation
IN
How discovered
V
Nature of condition
O
Precautionary procedure
K

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

What was found

NR 1 ENGINE FUEL LEAK. FOUND MOTIVE FLOW STAINLESS STEEL HARD LINE FROM THE MOTIVE PUMP TO THE AIRFRAME BROKEN OFF ABOUT .750" FROM THE PUMP. ALSO FOUND THE AGB COVER CRACKED OVER 50% OF THE MOTIVE FLOW PAD. REMOVED THE MOTIVE FLOW PUMP AND FOUND IT WAS VERY DIFFICULT TO TURN THE SHAFT OF THE PUMP AND THERE WAS A DEFINITE DRAGGING INSIDE THE PUMP THAT INDICATES A RUBBING OF THE IMPELLER OR GEAR AGAINST THE BODY OF THE PUMP.FOUND METAL SLIVERS UPON INSPECTION OF THE MOTIVE FLOW PUMP FILTER. UPON FURTHER INSPECTION FOUND BOTH BEARINGS TO BE BAD ON THE ALTERNATOR PAD DRIVE SHAFT. REPLACED AGB COVER P/N 3060810-2,MOTIVE FUEL LINE P/N SBJ10672-503,ALTERNATOR FWD BEARING P/N 3072883-1, ALTERNATOR AFT BEARING P/N 3072885-1, AND MOTIVE FLOW PUMP P/N 3060759-1 IAW LMM 73-20-01,72-00-00,72-60-01,72-60-02,AND MM 72-00-00.