Service difficulty report · Control Unit · Boeing 757224

Difficulty date
July 26, 2018
Submitted
July 30, 2018
Operation
Air carrier
Aircraft
N19130
Make and model
Boeing 757224
Aircraft serial
28970
Aircraft time
81,028 hours, 17,893 cycles
Engine
Rroyce RB21122*
Part
Control Unit
Part number
19753090001
Condition
Faulty
Location
Nr 1 Engine
Part time
71,710 hours, 16,647 cycles
Stage of operation
CL
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

ON CLB OUT LT ENG EGT IN AMBER WITH TEMP 150DEG HIGHER THAN LT. ALL OTR INDICATIONS SIMILAR PERFORMED FIM TASK 75-32-00-815-824-R06 BVCU BITE TEST. FAULTS NOTED 71, 73, 77, 10, 11, 12, 13, 18 AND 92. PER BLOCK 21 FLAG NOTE 2 CODES 71, 73 AND 77 ARE NOT ON TABLE. REQUIRES BVCU REPLACEMENT. R&R BVCU IAW AMM 75-32-01-023-ROO. PERFORMED OPS CHECK TEST NR 3 IAW AMM 71-00-00-715-049. OPS CHECK GOOD ROTABLE PARTS CHANGE WAS INDICATED. TT 1224856 SN OFF 3125 CONTROLLER, HIG OFF 19-7530-9-0001 3125.