Service difficulty report · Eec · Boeing 737990ER

Difficulty date
May 17, 2014
Submitted
May 22, 2014
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
583 hours, 197 cycles
Engine
Cfmint CFM567B27E
Part
Eec
Part number
2042M67P02
Part serial
FFFB1105
Condition
Faulted
Location
Nr 1 Engine
Part time
108 hours, 36 cycles
Stage of operation
IN
How discovered
9
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

ACQUIRED FAULT CODES ON EEC BITE TEST FOR NR 1 ENGINE. ACFT GROUNDED. PERFORMED EEC TEST 75-33 TASK 801. FOUND ACTIVE FAULTS 75-10821 AND 75-30801. PERFORMED 75-33, TASK 801, STEP 3 T25 SENSOR CHECKED NORMAL AT 217 OHMS EACH, STEP 3A, EEC REQ REPLACEMENT. REPLACED NR 1 ENGINE EEC. ALL OPS CHECKS NORMAL IAW MM 73-21-60. PERFORMED FIM 73-25 TASK 804. FMV POSITION SIGNAL DISAGREE IAW FAULT CODE 73-30351. NO FAULTS FOUND.