Service difficulty report · Eec · Boeing 737990ER

Difficulty date
October 25, 2023
Submitted
October 30, 2023
Operation
Air carrier
Aircraft
N459AS
Make and model
Boeing 737990ER
Aircraft serial
36352
Aircraft time
35,862 hours, 11,243 cycles
Part
Eec
Part number
1853M33P06
Part serial
LMDN6758
Condition
Faulted
Location
#2 Engine
Part time
499 hours, 148 cycles
Stage of operation
IN
How discovered
V
Nature of condition
J
Precautionary procedure
K

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

What was found

ON ENG 2 SHORT TIME FAULT MSG # 73-11282 EEC CHANNEL IS NOT ENERGIZED WITH THE ALTERNATOR VOLTAGE. GROUNDED - YES. (RESOLVED ON W/O: 1974677 TASKCARD: N/R-00004 ) INSPECTED DP0802 & DP0808. FOUND CONTAMINATION IN DP0802 & CLEANED. CHECKED CONTINUITY BETWEEN DP0802 & DP0808. NO SHORTS TO CONN. SHELL. REF FIM 73-27 TASK 804. REMOVED & REPLACED #2 EEC IAW FIM 73-27 TASK 805 STEP F. (1). ACCOMPLISHED NECESSARY POST-INSTALLATION TESTS/SOFTWARE CHECKS EXCEPT TEST 12-ACTUATORS TEST, TASK 71-00-00-700-807-F00. REPAIR CONFIRMATION NEEDS TO BE ACCOMPLISHED IAW FIM FIM 73-27 TASK 805 STEP G.(TEST 13-ENGINE RUN-EEC BITE CHECK, TASK 71-00-00-700-808-F00) N. RIVERA 55343 10/29/2023. PERFORMED ACTUATORS TEST REF AMM 71-00-00-700-807-F00. ACTUATORS TEST PASSED WITH NO FAULTS. PERFORMED TEST 13 ENGINE RUN, EEC BITE CHECK REF AMM 71-00-00-700-808-F00, NO FAULTS FOUND AFTER ENGINE RUN AND TEST. THIS CLEARS PLT, SEAMC DAN NOTIFIED.