SDR CALA2023012500210

Service difficulty report · Proximity Switch · Boeing 737990ER

Difficulty date: January 25, 2023
Submitted: January 25, 2023
Operation: Air carrier
Aircraft: N68891
Make and model: Boeing 737990ER
Aircraft serial: 42196
Aircraft time: 23,427 hours, 8,460 cycles
System (JASC): 5220 · Emergency Exits
Part: Proximity Switch
Part number: 285A16006
Part serial: FO6724
Condition: Faulted
Location: Rt Emer Exit
Stage of operation: TO
How discovered: O
Nature of condition: J
Precautionary procedure: C

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

What was found

RIGHT FWD/AFT OVERWING CAUTION. WHILE ADVANCING THRUST TO T/O PERFORMED PSEU BITE AS PER AMM 32-09 TASK 801 EXISTING FAULTS (2). R FL SW FAULT ,DETAIL MSG 52-72008 ,LATCHED YES,D10988 PIN 2. R FWD FL SW FAULT,DETAIL MSG 52-72009,LATCHED YES,D10988 PIN 52. REPLACED PSEU PER AMM TASK 32-09-10. OPS CHECK GOOD. NO FAULT NOTED. ROTABLE PARTS CHANGE WAS INDICATED - TT # 1874633 SN OFF 6724 SWITCH, PROXIMI OFF 29-3260-9-0003 6724 ON 29-3260-9-0003 3067