SDR ASAA2020110233502

Service difficulty report · Receptacle · Boeing 737990ER

Difficulty date: November 2, 2020
Submitted: November 10, 2020
Operation: Air carrier
Aircraft: N440AS
Make and model: Boeing 737990ER
Aircraft serial: 41705
Aircraft time: 26,817 hours, 8,624 cycles
Engine: Cfmint CFM567B27E
System (JASC): 7530 · Compressor Bleed Control
Part: Receptacle
Condition: Contaminated
Location: Vbv Actuator
Stage of operation: IN
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

WHILE ACCOMPLISHING T/C 78273000 FOUND SHORT TIME FAULT "MSG NBR: 75-30451, THE VBV POSITION SIGNALS DISAGREE" SET ON FLIGHT LEG 3. DEFERRED PER T/C 78273000. GROUNDED-YES. PERFORMED B737-900 FIM 75-32 TASK 803. NO FAULTS PRESENT OR IN FAULT HISTORY. BOTH VBV ACTUATORS AND HARNESSES J9 AND J10 TEST GOOD. FOUND NYLON BRUSH STRAND STUCK IN EEC J10 RECEPTACLE. STRAND REMOVED, NO OTHER FAULTS FOUND. PERFORMED REPAIR CONFIRMATION, PER FIM 75-32 TASK 803. OPERATIONS CHECKS GOOD. ETOPS GROUND VERIFICATION SUCCESSFUL.