SDR NOCA03009

Service difficulty report · Impeller · Boeing 75728A

Difficulty date
May 22, 2009
Submitted
May 27, 2009
Operation
Air carrier
Aircraft
N752NA
Make and model
Boeing 75728A
Aircraft serial
28174
Engine
Rroyce RB211535E4
Part
Impeller
Condition
Broken
Location
Lp Fuel Pump
Stage of operation
DE
How discovered
O
Nature of condition
X, J
Precautionary procedure
O

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

What was found

LEFT ENG FLAMED OUT ON DESCENT THROUGH FL 250 IN FLT START ENVELOPE DISPLAYED & CONDITION ADEQUATE TO ATTEMPT RESTART, RESTARTED AT FL 120 & OPERATED NORMAL TO GATE. MX IS FOLLOWING FIM'S 71-05-00 FIG 106, PER REQUEST 73-21-00 FIG 118, PER REQUEST 71-06-00 FIG 105. FUEL TANKS SUMPED & LP FUEL FILTER BOWL INSPECTED NO WATER OR CONTAMINATION FOUND, HP FUEL FILTER REPLACED, CHECKED SPAR VALVE. FFG P/N 8062-558/FFG05A5 & LP PUMP REPLACED, FOUND IMPELLER DAMAGED FOR LP FUEL PUMP. REF FIM 73-21-00 FIG 118 THERE WAS NO RESISTANCE FOUND BETWEEN PINS 2 TO 6 ON THE UPPER DEDICATED GENERATOR CONTROL, FIM CALLS OUT TO REPLACE BOTH UPPER & LOWER DEDICATED GCU. P/N 47385 WAS INSTALLED IN UPPER POSITION, SECOND UNIT P/N 430101 AND INSTALLED IN LOWER POSITION PER MM 73-21-10. REF FIM 71-06-00 FIG 105 BLOCK NR 1 BOROSCOPE ACCOMPLISHED PER MM 71-00-00, NO FAULTS FOUND. HIGH POWER RUN UP ACCOMPLISHED, ALL PARAMETERS FOUND TO BE NORMAL.

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