Service difficulty report · Eec · Boeing 757231

Difficulty date
October 12, 2012
Submitted
October 12, 2012
Operation
Air carrier
Aircraft
N990FD
Make and model
Boeing 757231
Aircraft serial
22909
Aircraft time
79,477 hours, 39,226 cycles
Engine
Pwa PW2037
Engine time
54,389 hours, 24,104 cycles
Part
Eec
Part number
78360018073
Part serial
20370320
Condition
Malfunctioned
Location
Zone 600
Part time
54,389 hours, 24,104 cycles
Stage of operation
CR
How discovered
O
Nature of condition
R
Precautionary procedure
A

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

What was found

RT ENGINE STARTED SURGING. EPR N1 EGT SURGED THEN RETURNED TO MATCH LT ENGINE. REPEATED AGAIN AND THEN A THIRD TIME. RT ENGINE N2 AND F/F STEADY DURING SURGING QRH COMPLIED WITH. A/T OFF AND REDUCED THRUST TO STABILIZED ENGINE. DESCENDED AND WITH NO FURTHER SURGING FROM RT ENGINE. NO AUDIBLE STALL HEARD. NO AUTO EVENTS LOGGED IN EPCS, NO ENGINE EXCEEDENCE, NO STATUS OR MX MESSAGES DISPLAYED ON EICAS. INSPECTED ENGINE, FAN MOVED FREELY, NO METAL DEBRIS FOUND IN EXHAUST SECTION, INLET AND FAN SHOW NO SIGNS OF FOD. R & R NR 2 ENGINE EEC IAW MM 71-00-00-5. ALL PARAMETERS NORMAL.