SDR IPXA2020072458184

Service difficulty report · Fan · Boeing 75724APF

Difficulty date: July 24, 2020
Submitted: July 24, 2020
Operation: Air carrier
Aircraft: N441UP
Make and model: Boeing 75724APF
Aircraft serial: 27386
Aircraft time: 26,944 hours, 17,640 cycles
System (JASC): 2121 · Air Distribution Fan
Part: Fan
Condition: Failed
Location: Equip Cooling
Stage of operation: CR
How discovered: O
Nature of condition: J
Precautionary procedure: O

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

What was found

AFTER TAKE OFF, EQUIPMENT COOLING, OVERHEAT LIGHT IN THE ALTERNATE POS. DU TO FANS NR 1. FOLLOWED BY F/O LOSING FD, SWITCHED TO SOURCE C CENTER THEN EQUIPMENT COOLING SUPPLY FAN NR 2, CIRTCUT BREAKER TRIPPED STATUS MESSAGE EQUIP CLG FLOW, EQUIP CLG, REMOVED AND REPLACED NR 2 E/E COOLING FAN IAW AMM 21-58-06-401. PERFORMED OPS CHECKED OF COOLING FAN IAW AMM 21-58-06-501. OPS CHECKED NORMAL.

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