SDR ASMF202106009

Service difficulty report · Pump · Boeing 73786J

Difficulty date: March 25, 2021
Submitted: June 23, 2021
Operation: Air carrier
Aircraft: N377AR
Make and model: Boeing 73786J
Aircraft serial: 37753
Aircraft time: 35,126 hours, 16,071 cycles
System (JASC): 2913 · Hydraulic Pump (Electric/Engine), Main
Part: Pump
Condition: Leaking
Location: Hyd System
Stage of operation: IN
How discovered: 9
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 TRANSIT CHECK, A HYDRAULIC LEAK WAS DETECTED AT LEFT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION, DETECTING A HYDRAULIC LEAK AT LEFT ENGINE ELECTRICAL HYDRAULIC PUMP (EDP); SO THE LEFT ENGINE EDP WAS REPLACED IAW AMM 29-11-11, TESTED CORRECT.

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