Service difficulty report · Screen · Boeing 737823

Difficulty date
July 17, 2017
Submitted
July 19, 2017
Operation
Air carrier
Aircraft
N800NN
Make and model
Boeing 737823
Aircraft serial
29564
Aircraft time
25,910 hours, 10,173 cycles
Engine
Cfmint CFM567B273
Part
Screen
Condition
Clogged
Location
Nr 2 Engine
Stage of operation
CR
How discovered
O
Nature of condition
J
Precautionary procedure
A

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

What was found

THE AIRCRAFT WAS GROUNDED. CREW REPORTED LOSS OF ENGINE OIL QUANTITY AND OIL PRESSURE IN THE YELLOW BAND ON NR 2 ENGINE DURING FLIGHT. AN EMERGENCY WAS DECLARED AND THE FLIGHT DIVERTED TO ATL WITHOUT FURTHER INCIDENT. ACCOMPLISHED CHIP DETECTORS AND SCAVENGE SCREENS INSPECTION ON NR 2 ENGINE. FOUND PLASTIC MATERIAL IN FWD SUMP SCAVENGE SCREEN. ACCOMPLISHED ENGINE OIL FLUSH AND REFILL ALONG WITH MAIN AND SCAVENGE FILTER REPLACEMENTS. THIS IAW AMM 79-00-00-200-804 PARAGRAPH H(7) (H)2. AIRCRAFT FERRIED TO MIA FOR BORESCOPE OF FWD SUMP SCAVENGE TUBE. ACCOMPLISHED BORESCOPE INSPECTION ON THE FWD SUMP LINE, NO DEFECTS NOTED, HOWEVER, FOUND MATERIAL MISSING AROUND 2 NUTS IN THE AGB COPPER IN COLOR. CONDITION WAS FOUND OK FOR SERVICE PER EA 271813.