Service difficulty report · Thermoswitch · Boeing 717200

Difficulty date
June 5, 2022
Submitted
June 8, 2022
Operation
Air carrier
Aircraft
N985AT
Make and model
Boeing 717200
Aircraft serial
55090
Aircraft time
49,901 hours, 34,737 cycles
Part
Thermoswitch
Condition
Misaligned
Stage of operation
TX
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

SPARKS EMITTED FROM CA WINDSHIELD WHEN ANTI-FOG SWITCH TURNED ON. FWD TO B717 MEL 30-41-01A. 'M' PROC C/W. MEL/PLAC INSTALLED. OK FOR SVC. *********************MCC TECHNICIAN UPDATE********************** CA WINDSHIELD MPN 5912290-508 REF B717 IPC 56-11-01-01 ITEM 140. STK# 92-5610-4-0001 REF B717 AMM 56-11-02 FOR REMOVE/INSTALL. **************************************************************** AFTER CONSULTING WITH PREVIOUS MTC IT WAS DISCOVERED THE CAPTS WINDOW THERMOSWITCH S1-220 HAD BECOME DISLODGED FROM THE SPRING RETAINER, RESULTING IN WIRE TERMINAL COMING INTO CONTACT WITH THE SPRING RETAINER. CONFIRMED PROPER INSTALLATION OF THERMOSWITCH S1-220 PER B717 AMM 30-42-01-000-801. CAPTS WINDSHIELD ANTI-FOG OPS CHK GOOD PER B717 AMM 30-42-01-710-801. MEL CLEARED, PLACARD REMOVED, NO "M" PROCEDURES. LOG-PAGE UPDATED @ 07JUN22 0851 UTC ******************************************************************************* (LP #8640656)

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