Service difficulty report · Control Unit · Boeing 757236

Difficulty date
March 30, 2006
Submitted
April 3, 2006
Operation
Air carrier
Aircraft
N506NA
Make and model
Boeing 757236
Aircraft serial
24771
Aircraft time
41,779 hours, 16,523 cycles
Engine
Rroyce RB211535E437
Engine time
48,102 hours, 14,699 cycles
Part
Control Unit
Part number
C8E3815
Part serial
3323
Condition
Malfunctioned
Location
Lt Engine
Stage of operation
TO
How discovered
O
Nature of condition
O
Precautionary procedure
C

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

What was found

LEFT ENGINE N2 RPM WENT TO OVERSPEED. IAW AMM 75-32-01 PAGE 401, REPLACED BLEED VALVE CONTROL UNIT. OPS CHECK OK FOR SERVICE.