Service difficulty report · Servo Valve · Boeing 7672B7ER

Difficulty date
January 20, 2012
Submitted
April 5, 2012
Operation
Air carrier
Aircraft
N256AY
Make and model
Boeing 7672B7ER
Aircraft serial
26847
Aircraft time
78,195 hours, 14,554 cycles
Engine
Ge CF680C2B2
Engine time
80,727 hours, 14,873 cycles
Part
Servo Valve
Part number
5223050
Condition
Failed
Location
Rt Engine
Part time
70,127 hours
Component
Mec · Woodward
Component part number
8061874
Stage of operation
TX
How discovered
O
Nature of condition
J
Precautionary procedure
K

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

What was found

PHL FLT 723 EN ROUTE DUB TO PHL. R ENG LOW OIL PRESS ON LANDING ROLL OUT; PRECEDED BY R GEN OFF INTERMITTENT INDICATIONS ON FINAL APPROACH. RIGHT ENGINE SHUTDOWN AT 1937Z. RIGHT OIL PRESSURE LESS THAN 10. REMOVED AND REPLACED ENGINE MEC ASSY. GRD RUN UP TEST GOOD. NO LEAKS. VENDOR SHOP FINDINGS: OVERHAULED UNIT. N2 TRACKING SERVO VALVE FOUND FAILED.