Service difficulty report · Element · Boeing 747243B

Difficulty date
October 11, 2008
Submitted
October 20, 2008
Operation
Air carrier
Aircraft
N540MC
Make and model
Boeing 747243B
Aircraft serial
22508
Aircraft time
103,190 hours, 18,058 cycles
Engine
Ge CF650E2
Engine time
83,778 hours, 17,044 cycles
Part
Element
Part number
51224001
Condition
False Activation
Location
Nr 2 Engine
Stage of operation
CL
How discovered
O
Nature of condition
N
Precautionary procedure
F, B, A

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

What was found

DURING CLIMBOUT AT 17000 FEET NR 2 ENGINE FIRE WARNING BELL AND LIGHT CAME ON. ACCOMPLISHED CHECKLIST, BOTH FIRE BOTTLES WERE DISCHARGED, HYD PUMP SUPPLY OFF FOR 1 HOUR AND 30 MINUTES NR 2 FIRE WARNING LIGHT AND NACELLE TEMP STAYED AT 7.9 AND 8.9 AFTER BLOCK IN. TROUBLESHOT TO HARD FAULTS ON STRUT AREA FORWARD DETECTOR ELEMENT, REPLACED ELEMENTS AND REPLACED FIRE BOTTLES. ALL OPS CHECKED NORMAL.