SDR ASMF202110021

Service difficulty report · Seal · Boeing 73786J

Difficulty date: September 13, 2021
Submitted: October 26, 2021
Operation: Air carrier
Aircraft: N377AR
Make and model: Boeing 73786J
Aircraft serial: 37753
Aircraft time: 36,762 hours, 16,802 cycles
System (JASC): 7260 · Turbine Engine Accessory Drive
Part: Seal
Part number: 3051157090
Part serial: 301202
Condition: Damaged
Location: Left
Part time: 36,761 hours, 16,801 cycles
Stage of operation: IN
How discovered: B
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

DURING OVERNIGHT CHECK AT MEX STATION, DUE TO BORESCOPE INSPECTION AT LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED LEFT ENGINE BORESCOPE INSPECTION, DETECTING OIL LEAK BY IDG DRAIN WITH 45 DROPS PER MINUTES; SO THE IDG SEALOL SEAL WAS REPLACED IAW AMM 72-60-00 AND OPERATIONAL TEST WAS PERFORMED IAW AMM 71-00-00, TESTED CORRECT.

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