Service difficulty report · Exciter · Boeing 777222

Difficulty date
January 26, 2012
Submitted
February 20, 2012
Operation
Air carrier
Aircraft
N217UA
Make and model
Boeing 777222
Aircraft serial
30550
Aircraft time
47,637 hours, 5,902 cycles
Engine
Pwa PW40903
System (JASC)
7412 · Exciter
Part
Exciter
Part number
50U984
Part serial
140
Condition
Faulty
Location
Lt Engine
Stage of operation
IN
How discovered
O
Nature of condition
O
Precautionary procedure
K

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

What was found

LEFT ENGINE FIRST START ABORTED, SECOND START OKAY. MAINT MSG IS 74-61501 'IGNITION SYSTEM NR 2 (L ENG) FAILED TO LIGHT ENGINE' REF FIM 74- 11 TASK 816. ECM DATA SHOWS LIGHT OFF TIMES SLOWER SINCE IGN2 (LOWER) EXCITER AND CABLE WERE PREV RPL 08DEC. IF FIM FINDS NO CAUSE OF POOR LIGHT OFF, RECOMMEND RPL EXCITER AND CABLE AGAIN. RPL'D :NO DEFECT FOUND PER FIM 74-11 TASK 816. RPL'D EXCITER, LEAD ASSY & PLUG PER MM 74-11-01, MM74-21-01 & MM74-21-02, AUDIBLE MAT TEST PASS.