SDR KCSA11053

Service difficulty report · Engine · Boeing 747251F

Difficulty date
September 16, 2011
Submitted
September 29, 2011
Operation
Air carrier
Aircraft
N791CK
Make and model
Boeing 747251F
Aircraft serial
23888
Aircraft time
82,663 hours, 17,724 cycles
Engine
Pwa JT9D7R4G2
Engine time
68,248 hours, 10,190 cycles
Part
Engine
Part number
JT9D7R4G2
Part serial
715187
Condition
Surges
Location
Nr 4
Part time
68,248 hours, 10,190 cycles
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
E, J, A

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

What was found

NR 4 ENGINE SURGED DURING CONSTANT POWER. ENGINE WAS SHUT DOWN. ENGINE WAS SURGING AT CLIMB THRUST PRIOR TO SHUTDOWN. ENGINE WIND MILLED FOR 40 MINUTES. EGT EXCEEDANCE WARNING 730°. FAILURE OCCURRED AT 0545Z DURING CLIMB. SYSTEM NR 2 IGNITION. ZERO RESTARTS.