Service difficulty report · Eec · Boeing 767322

Difficulty date
August 22, 2009
Submitted
August 24, 2009
Operation
Air carrier
Aircraft
N668UA
Make and model
Boeing 767322
Aircraft serial
30024
Aircraft time
37,416 hours, 10,175 cycles
Engine
Pwa PW4056
Part
Eec
Part number
7911004108
Part serial
148
Condition
Faulty
Location
Nr 2 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

INTERROGATED RT PIMU FOUND EEC CH-A FAULT CAT 2, EEC CH-A N1 RANGE FAIL. CHECKED WIRING TO CH-A N1 PROBE CONTINUITY .7 OHMS. TO EEC. FOUND N1 PROBE OPEN PINS 1-2. SHOULD BE 301-369 OHMS. NEED TO CHANGE N1 PROBE. REPLACED EEC NR 2 ENG PER 73 -21-04, NEED OP CHECK. NR 2 ENG EEC OP CHECKED NORMAL ON RUN - TEST NR 6, NO FAULTS. STATIC TEST NR 7 CHECKED GOOD, NO FAULTS.