Service difficulty report · Control Unit · Boeing 757230

Difficulty date
June 20, 2022
Submitted
June 27, 2022
Operation
Air carrier
Aircraft
N688SL
Make and model
Boeing 757230
Aircraft serial
25140
Aircraft time
99,980 hours, 25,681 cycles
Engine
Pwa PW2040
Engine time
80,577 hours, 27,328 cycles
Part
Control Unit
Part number
7791005
Part serial
F4672
Condition
Faulty
Location
L Eng
Stage of operation
UK
How discovered
O
Nature of condition
S
Precautionary procedure
K

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

What was found

L/H ENG FLUCTUATING EPR 1.12-1.19 N1 79.2-81.3 ALONG WITH THE DUCT PRESSURE FROM 25PSI-30PSI. R/R FUEL CONTROL UNIT, LEAK CHECK AND ENGINE RUN GOOD PER AMM 73-21-01.