Service difficulty report · Sensor · Boeing 7379

Difficulty date
June 19, 2024
Submitted
June 24, 2024
Operation
Air carrier
Aircraft
N37542
Make and model
Boeing 7379
Aircraft serial
64470
Aircraft time
5,642 hours, 1,952 cycles
Engine
Cfmint LEAP1B28
Engine time
5,603 hours, 1,936 cycles
Part
Sensor
Part number
UNKNOWN
Condition
Contaminated
Location
Nr 1 Eng Oil
Stage of operation
IN
How discovered
9
Nature of condition
C, J
Precautionary procedure
K

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

What was found

NR 1 ENG SHOWS AN OIL SYSTEM CHIP COUNT INCREASE. INSPECTED ODMS SENSOR PER AMM 79-00-00-210-804-G00, ALL SCAVENGE SCREEN PLUGS PER AMM 79-21-04-211-801-G00, AND STARTER MCD PER AMM 80-11-09-200-8 01-G00. CONFIRM MAGNETIC OR NON-MAGNETIC FOR ALL FINDINGS. RESET ODMS TO ZERO PER AMM 71-00-00-700-802-G00. OPTION 4. FOUND METALLIC DEBRIS ON ODMS SENSOR, DEBRIS WAS FOUND TO BE GREATER THAN 0.004 INCHES REF AMM 79-00-00-210-804-G00 ST EP G.1(B) G. 2(B). INSTALLED OIL DEBRIS MONITORING SYSTEM SENSOR REF AMM 79-21-12-400-801-G00. VERIFIED O-RING AND INSTALLATION OF NR 1 ENGINE ODMS SENSOR. CHECKED STARTER MCD PER AMM 80-11-09-200-801-G00, NO DEBRIS NOTED.

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