Service difficulty report · Cooling Fan · Boeing 75724APF

Difficulty date
July 25, 2001
Submitted
July 27, 2001
Operation
Air carrier
Aircraft
N423UP
Make and model
Boeing 75724APF
Aircraft serial
25325
Part
Cooling Fan
Condition
Failed
Location
Cockpit
Stage of operation
NR
How discovered
O
Nature of condition
B, J
Precautionary procedure
A

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

What was found

INSPECTION TYPE:N/A DIVERSION-SMOKE IN FLT DECK. NOTED NOISE AT FO INST PANEL WX RADAR DISPLAYED ON EFIS AS INOP, RADAR TURNED OFF EQUIP OVERHT DISPLAYED, I NST SW DISPLAYED, CAPTS AND FO ADI BLANK SELECTED ALTN EFI-NO HELP, COMPLETED EQUIP OVERFT ****SUPPLEMENTAL MRR*** PER 21-58-23-4 R&R F/D SUPPLY FAN NR1 PER 21-58-06-4 R&R FWD EQUIP SUPPLY FAN NR2 AND RELAY K344, PER MM 21-58-06-4 & 21-58-23-4 SYSTEM TEST NORMAL. PN OFF/ON 731378 SN ON 2857 SN OFF 1929 POS F/D FAN PN ON/OFF 731376 S/N ON 2175 SN OFF 0931 POS FWD EQUIP ON OFF 9123-8072 SN ON SN ON TAG 0557457 OFF 055757A WX RADAR TEST NORMAL

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