SDR ASAA2023030342197

Service difficulty report · Drive Unit · Boeing 737890

Difficulty date: March 3, 2023
Submitted: March 6, 2023
Operation: Air carrier
Aircraft: N514AS
Make and model: Boeing 737890
Aircraft serial: 35193
Aircraft time: 51,756 hours, 15,237 cycles
System (JASC): 3400 · Navigation System
Part: Drive Unit
Part number: 6225135822
Condition: Inoperative
Location: Nose Radome
Stage of operation: NR
How discovered: V
Nature of condition: J
Precautionary procedure: K

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

What was found

PWS FAIL ON ND. GROUNDED - YES. INITIAL EVALUATION FOUND WEATHER RADAR RT BLOWER FAN SEIZED. REMOVED & REPLACED WEATHER RADAR RT BLOWER MOUNT ASSY REF B737-800 AMM 34-43-51 & WEATHER RADAR RT REF AMM 34-43-41. OPS CHECK FAILED, 'PWS FAIL' AND 'WXR FAIL ANT' DISPLAYED ON ND. ACCOMPLISHED B737-800 FIM 34-43 TASK 803, REMOVED & REPLACED WEATHER RADAR ANTENNA DRIVE UNIT REF AMM 34-43-11. OPS CK OF WEATHER RADAR & PWS SYSTEM GOOD.