SDR CALA2020091501100

Service difficulty report · Control Panel · Boeing 737924ER

Difficulty date: September 11, 2020
Submitted: September 15, 2020
Operation: Air carrier
Aircraft: N77431
Make and model: Boeing 737924ER
Aircraft serial: 32833
Aircraft time: 38,562 hours, 13,303 cycles
System (JASC): 3440 · Independent Position Determining System
Part: Control Panel
Part number: 6225129223
Condition: Malfunctioned
Location: Wx Radar Sys
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

INFLT WX RADAR FAILED SCREEN SHOWS WXR FAIL CONT STAB. REMOVED AND REPLACED WEATHER RADAR TRANSCEIVER M.M. 34-43-41. DURING OPS CHECK M.M. 34-43-00 WEATHER RADAR WOULD NOT TEST. TEST LIGHTS ON RADAR CONTROL PANEL WERE INTERMINTENT. REMOVED AND REPLACED RADAR CONTROL PANEL. WEATHER RADAR OPS CHECKS GOOD. ROTABLE PARTS CHANGE WAS INDICATED-TT NR 1153601 SN OFF 4245 TT NR 1173026 SN OFF 7807 PANEL, CONTROL, OFF 29-3443-9-0007 4245 ON 29-3443-9-0007 5449 TRANSCEIVER, WX OFF 99-2317-9-0001 7807 ON 99-2317-9-0001 9592.