Service difficulty report · Control Unit · Boeing 757223

Difficulty date
April 17, 2012
Submitted
April 19, 2012
Operation
Air carrier
Aircraft
N178AA
Make and model
Boeing 757223
Aircraft serial
32398
Aircraft time
32,622 hours, 10,215 cycles
Part
Control Unit
Condition
Inoperative
Location
Lt Engine
Stage of operation
CR
How discovered
O
Nature of condition
O
Precautionary procedure
A

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

What was found

MEM - INFLIGHT MIA-SFO. CREW REPORTED LEFT ENGINE PARAMETERS FLUCTATING ABNORMALLY. EMERGENCY DECLARED FLIGHT DIVERTED MEM LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED BLEED VALVE CONTROL UNIT. SYSTEM GROUND CHECK NORMAL OPERATION.