Service difficulty report · Eec · Boeing 737890

Difficulty date
July 8, 2019
Submitted
July 12, 2019
Operation
Air carrier
Aircraft
N535AS
Make and model
Boeing 737890
Aircraft serial
35200
Aircraft time
33,086 hours, 9,593 cycles
Engine
Cfmint CFM567B27
Part
Eec
Part number
1853M33P06
Part serial
LMDN5476
Condition
Failed
Location
Nr 1 Engine
Part time
20,858 hours, 7,714 cycles
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

FOUND #1 ENGINE SHORT TERM FAULT 73-10341. POSITION SIGNAL IS OUT OF RANGE. GROUNDED - YES. VERIFIED FAULT STILL ACTIVE. DUE TO OTHER ACTIVE FAULT 78-11491, FOLLOWED FIM 75-34 TASK 807. FOUND ALL RESISTANCE FROM STEPS F1 TO F8 GOOD. REMOVED AND REPLACED #1 EEC IAW AMM 73-21-60. ALL OPS CHECKS GOOD. THIS CLEARS PLT. ALSO REPLACED MW0303 HARNESS AS PRECAUTION IAW AMM 71-51-03 STEP 3. ALL TEST PASS.