Service difficulty report · Governor · Boeing 757200

Difficulty date
September 7, 2023
Submitted
September 11, 2023
Operation
Air carrier
Aircraft
N41135
Make and model
Boeing 757200
Aircraft serial
29284
Aircraft time
93,267 hours, 20,009 cycles
Part
Governor
Part number
FFG021BH
Part serial
1999017
Condition
Faulty
Location
Rh Eng
Part time
7,540 hours, 1,685 cycles
Stage of operation
TO
How discovered
O
Nature of condition
O
Precautionary procedure
C

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

What was found

RIGHT ENG DID NOT SPOOL UPON T/O RTO GOVERNOR PART NUMERS IS 8062-551, FFG022AC S/N 9758 PHASE 2 ENG GOVERNOR. VERIFIED P/N''S AND EFFECTIVITY ON FFG & POSITION 38 & 39 OK TO INSTALL FFG ON #2 ENGINE O-RINGS. RAN RIGHT ENG, WITH THROTTLES AT IDLE, N3 WAS HIGH AT AROUND REMOVED #2 ENG FUEL FLOW GOVERNOR PER AMM 73-21-01-004-R04. DRAINED PRESERVATIVE OIL FROM FFG PER AMM 73-21-01-404-013-R04, REQUEST OK TO INSTALL FFG PER AMM 73-21-01-404-013-R04. 73%. AS THROTTLES WERE ADVANCED, N3 CAME DOWN ALMOST TO NORMAL VERIFYED PART NUMBER AND ENG EFFECTIVITY OF THE NEW FUEL FLOW STEP G1. IDLE. GOVERNOR. REF AMM 73-21-01-404 VERIFYED CORRECT O RING BEING INSTALLED, POSITION38 AND POSITION39. ACP STEPG 2 THRU G 5 INSTALLED FFG IAW AMM 73-21-01-404-013-R04 UP TO AND INCLUDED IDT INSPECTED VERIFYING ALL OTHER NEW ORINGS, FFG INSTALLATION ROTABLE PART INFO. FFG R&R STEP, (3).(G).(11). AND SAFETY IAW AMM 73-21-01-404-013-R04 UP TO AND INCLUDED STEP, ROTABLE PARTS CHANGE WAS INDICATED - TT # 1928274 SN OFF 9017 (3).(G).(11). GOVERNOR, FUEL OFF 19-7321-9-0011 9017 ON 19-7321-9-0011 9758 COMPLIED WITH AMM 73-21-04 AND PERFORMED ENGINE RUN REF AMM 71-00-00-700 TEST 1,2,9,10,11 ALL TEST CHECK GOOD VERIFIED COMPLETION OF AMM 73-21-04 AND THE PERFORMANCE OF ENGINE RUNS REF. 71-00-00-700 TEST 1,2,9,10 AND 11. ALL TESTS GOOD.

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