Service difficulty report · Flow Divider · Boeing 747123

Difficulty date
April 22, 1996
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N859FT
Make and model
Boeing 747123
Aircraft serial
20326
Engine
Pwa JT9D7A
Part
Flow Divider
Part number
7344441
Condition
Malfunctioned
Location
Nr 2 Engine
Stage of operation
CR
Nature of condition
J
Precautionary procedure
A

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

What was found

NUMBER 2 ENGINE SURGE BLEED VALVE STUCK OPEN AT FLIGHT LEVEL 39, EGT 100 DEGREES CELSIUS HOTTER THAN OTHER ENGINES AND FUEL FLOW 500 LBS HIGHER. REMOVED AND REPLACED ENGINE FLOW DIVIDER IAW MM 75-32-05. REMOVED AND REPLACED TT2 SENSOR IAW MM 73-21-04 AS PRECAUTIONARY. ENGINE RUNUP NORMAL IAW MM 71-00-00.