SDR CALA2015080300638

Service difficulty report · Solenoid · Boeing 757224

Difficulty date: August 2, 2015
Submitted: August 3, 2015
Operation: Air carrier
Aircraft: N14120
Make and model: Boeing 757224
Aircraft serial: 27562
Aircraft time: 68,022 hours, 17,553 cycles
Engine: Rroyce RB211535E4B3
System (JASC): 7530 · Compressor Bleed Control
Part: Solenoid
Condition: Faulty
Location: Rt Engine
Stage of operation: CR
How discovered: O
Nature of condition: M
Precautionary procedure: A

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

What was found

DURING CRUISE, CLIMB FROM FL350 TO FL370. ENGINE 2 N3 EXCEEDANCE 100%, EGT 795C, FF 500 ABOVE NR 1 ENGINE N2 8% HIGHER, N1 39% LOWER. DURING CRUISE BACK FL320 EPR`S 1.51 1.50 N1 85.1 83.2 EGT 584, 683 N2 81, 85 N3 84, 90, FF 4.1, 4.6. TROUBLE SHOT IAW FIM 75-32-00, FOUND RIGHT IP SOLENOID AT FAULT. REPLACED SAME, SEE 75-32-03. REPLACED BVCU IAW MX CONTROL, SEE 75-32-01. PERFORMED TEST NR 3, ENGINE FUNCTIONS NORMALLY.