SDR ASAA2022050638243

Service difficulty report · Loop · Boeing 737900ER

Difficulty date: May 6, 2022
Submitted: May 10, 2022
Operation: Air carrier
Aircraft: N408AS
Make and model: Boeing 737900ER
Aircraft serial: 41732
Aircraft time: 34,424 hours, 10,926 cycles
System (JASC): 2610 · Detection System
Part: Loop
Condition: Inoperative
Stage of operation: IN
How discovered: O
Nature of condition: O
Precautionary procedure: K

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

What was found

#1 ENG FIRE DETECTION LOOP B INOP. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 26-10 TASK 805, FOUND FAN FIRE DETECTION HARNESS MW0316 BAD, REMOVED AND REPLACED MW0316, FAN FIRE DETECTION HARNESS REF AMM 26-11-02/401. #1 ENGINE FIRE DETECTION OPERATIONAL TEST NORMAL. ETOPS GROUND VERIFICATION TEST SUCCESSFUL.

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