Service difficulty report · Electronic Unit · Boeing 737790

Difficulty date
May 22, 2018
Submitted
May 24, 2018
Operation
Air carrier
Aircraft
N560WN
Make and model
Boeing 737790
Aircraft serial
30542
Aircraft time
59,355 hours, 27,896 cycles
Part
Electronic Unit
Part number
4081600930
Part serial
99051203
Condition
Faulty
Location
Nr 1 Engine
Stage of operation
CL
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

ON CLIMB OUT NR 1 ENGINE OIL QUANTITY DROPPED TO 20% THEN WENT BETWEEN 22 TO 34% UNTIL LEVEL OFF AT ALTITUDE, THE OIL QUANTITY RETURNED TO NORMAL. R&R NR 1 DISPLAY ELECTRONIC UNIT PER AMM.