Service difficulty report · Solenoid Valve · Boeing 767306

Difficulty date
March 28, 2019
Submitted
April 3, 2019
Operation
Air carrier
Aircraft
N1229A
Make and model
Boeing 767306
Aircraft serial
28884
Aircraft time
69,335 hours, 15,230 cycles
Part
Solenoid Valve
Part number
38761661
Part serial
4689
Condition
Inoperative
Location
Apu
Stage of operation
TX
How discovered
O
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

APU RELIABILITY COLD START ATTEMPTED ON FLT LEG CVG SCK SAT-50, FL 380 FAILED TO START ON 3 ATTEMPTS. APU INOP.(<P>TRANSFERRED TO MDDR 109396.<BR /></P><P>LP 1024068 - M3: TROUBLE SHOT APU IAW 49-11 FAULT TREE 991 UP TO BLOCK 11 SHEET 2. NO HELP. DMI # 109396 REMAINS OPEN.</P><P>LP 1024075 - M3: REMOVED AND REPLACED APU EXCITER BOX AND REMOVED AND REPLACED APU ELEC. IGNITION LEAD P/N 3888076-3 IAW AMM 49-41-03 AND AMM 49-41-04. DMI # 109396 REMAINS OPEN. </P><P>LP 1024079 - M3: REMOVED AND REPLACED APU IGNITER PLUG IAW AMM 49-41-02-404-006. MDDR # 109396 REMAINS OPEN. </P><P>LP 1060868-M3 ACCOMPLISHED ACTION PLAN. REMOVED AND REPLACED DE-OIL SOLENOID VALVE IAW AMM 49-27-08. LEAK AND OPS CHECK GOOD. THIS CLOSES DMI 109396. MCC NOTIFIED. PLACARDS REMOVED. </P>)