Service difficulty report · Solenoid · Boeing 75724APF

Difficulty date
March 1, 2020
Submitted
March 3, 2020
Operation
Air carrier
Aircraft
N448UP
Make and model
Boeing 75724APF
Aircraft serial
27737
Aircraft time
25,645 hours, 16,884 cycles
Engine
Rroyce RB211*
Part
Solenoid
Condition
Malfunctioned
Location
Rt Engine
Stage of operation
CL
How discovered
O
Nature of condition
O
Precautionary procedure
O

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

What was found

INSPECTION TYPE:NA**DIVERSION - AC TAKEN OOS** DURING CLIMB RIGHT ENGINE STARTED SURGING. EGT APPROACHING AMBER LIMIT RAPIDLY ALL OTHER ENGINE GAUGES ALSO SURGING. AT 280KTS CLIMBING THROUGH FL 270 AT CLB 2 POWER SET, EGT SURGING FROM 610 TO 740 FUEL FLOW INCREASING 500 TO 600 PPH. N1 &R&R COMPRESSOR BLEED VLV SOLENOID MM 75-37-03-401; UPPER OTBD IP BLEED VLV SOLENOID MM 75-32-03; BVCU MM 75-32-01; 3 IP COMPRESSOR BLEED VLVS MM 75-32-02-004-001-R00, 75-32-02-404-012-R00, IPC 75-32-02-04-25K; STATOR DEDICATED GENERATOR MM 73-21-08-404-014-R00, IPC 73-21-08-01-007K. OPS CHECKED OK

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