Service difficulty report · Control Unit · Boeing 747249F

Difficulty date
January 12, 2002
Submitted
January 17, 2002
Operation
Air carrier
Aircraft
N920FT
Make and model
Boeing 747249F
Aircraft serial
22237
Aircraft time
69,496 hours, 17,096 cycles
Engine
Pwa JT9D7Q
Engine time
51,901 hours, 13,041 cycles
System (JASC)
7603 · Power Lever
Part
Control Unit
Condition
Out Of Rig
Location
Nr 3 Engine
Stage of operation
TO
How discovered
O
Nature of condition
R
Precautionary procedure
C

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

What was found

NR 3 ENG WOULD NOT ACHIEVE T/O THRUST. 1.58 MAX PWR WAS APPLIED, THRUST LEVER WAS MOVED TO FIREWALL THRUST W/ MAX EPR OF 1.38. OTHER PARAMETERS NORMAL WHEN ASSOCIATED W/ & EPR SETTING OF 1.38 ENG RUN TO MAX POWER FOR OPS CK INTO WIND (250/11). ENG SLOW TO RESPOND TO THROTTLE MOVEMENT. MAX EPR WAS 1.40. RIGGED NR 3 ENG THRUST LEVER CONTROLS IAW MM 76-11-00, SECTION 4. OPS CK OK ON ENG RUN, IAW MM 71-00-00. ALL ENG PARAMETERS NORMAL ON GROUND RUN.