SDR EIAA9698

Service difficulty report · Engine · Boeing 747212B

Difficulty date
December 16, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N482EV
Make and model
Boeing 747212B
Aircraft serial
20713
Engine
Pwa JT9D70
Part
Engine
Condition
Surged
Location
Nr 2
Part time
42,058 hours
Stage of operation
CL
Nature of condition
O
Precautionary procedure
E

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

What was found

AFTER TAKEOFF, WHEN POWER WAS REDUCED FOR CRUISE SETTING, NR 2 ENGINE SURGED WITH INCREASING EGT ENGINE WAS SHUT DOWN AND RESTARTED WITH ABNORMALLY HIGH EGT (720) FOR IDLE THRUST POWER SETTING AT FL 350. WITH ENGINE RESTARTED N2 AT IDLE WAS 50 PERCENT. NO LIMITATIONS EXCEEDED. ENGINE WAS SHUTDOWN AGAIN FOR HIGH EGT. PERFORMED ENGINE WINDMILLING CHECK, INSPECTION OF ALL VISIBLE VANES, BLEED AND FUEL CONTROL UNIT PLUMBING WITH NO DEFECTS EVIDENT. FULE PUMP PRESSURE CHECKED AT 600 PSI. ENGINE IDLE RUN CARRIED OUT AND ALL PARAMETERS WITHIN LIMITS. SUBSEQUENT FLT WAS NORMAL. (M)

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