Service difficulty report · Oil System · Boeing 737890

Difficulty date
May 24, 2023
Submitted
May 30, 2023
Operation
Air carrier
Aircraft
N508AS
Make and model
Boeing 737890
Aircraft serial
35691
Aircraft time
53,488 hours, 15,750 cycles
Engine
Cfmint CFM567B273
Engine time
53,182 hours, 15,670 cycles
Part
Oil System
Condition
Leaking
Location
Lt Engine
Part time
53,182 hours, 15,670 cycles
Stage of operation
IN
How discovered
V
Nature of condition
K
Precautionary procedure
K

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

What was found

WHILE ACCOMPLISHING ASA TSR714364 FOUND FWD SUMP DRAIN LEAKING AT 1 DROP EVERY 3 SECOND AT IDLE. DURING PART POWER LEAK CHECK ON TSR, FWD SUMP DRAIN FILLED BAG AND BURST. PER 71-71-00-010-004-F00. SERVICEABLE LIMITS 20 DROP PER SECOND. ESN # 896-629 #1 ENGINE. GROUNDED - YES. REMOVED #1 ENGINE ESN # 896629 REF. A/C ASA W/O # 1950130 T/C #78454000.