SDR ASAA2020113033621

Service difficulty report · Solenoid · Boeing 737990ER

Difficulty date: November 30, 2020
Submitted: December 3, 2020
Operation: Air carrier
Aircraft: N434AS
Make and model: Boeing 737990ER
Aircraft serial: 61620
Aircraft time: 17,808 hours, 5,623 cycles
System (JASC): 2910 · Hydraulic System, Main
Part: Solenoid
Part number: 226161
Condition: Damaged
Location: Nr 2 Hyd System
Stage of operation: NR
How discovered: 9
Nature of condition: O
Precautionary procedure: O

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

What was found

HYDRAULIC SYSTEM ENGINE PUMP DEPRESS VALVE 2 CIRCUIT BREAKER OPEN (P6-2, A-17). GROUNDED-YES. O-RING FOR NR 2 ENGINE CONNECTOR DP1204 DAMAGED. REPLACED HARNESS MW0312, REF B737-900 AMM 71-51-03. REMOVED COLLAR FROM ENGINE PUMP DEPRESS VALVE NR 2 C/B AND RESET C/B. CONNECTED NEW DP1204 TO EDP SOLENOID. ACTUATORS TEST AND EEC TEST PASSES, REF AMM 71-51-03/401. REMOVED AND REPLACED ENGINE DRIVEN PUMP DEPRESSURIZATION VALVE SOLENOID, REF AMM 29-11-11-000-805-001 AND 29-11-11-400-805-001. OPERATIONS CHECK PASSED.