SDR 2021F00344

Service difficulty report · None · Boeing 7879

Difficulty date: November 17, 2021
Submitted: December 16, 2021
Operation: General aviation
Aircraft: N446AM
Make and model: Boeing 7879
Aircraft serial: 39292
Aircraft time: 15,288 hours, 1,803 cycles
System (JASC): 2911 · Hydraulic Power Accumulator, Main
Part: None
Part number: 5306508
Part serial: 530650530
Condition: Leaking
Location: Zone 400
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

HYDRAULIC LEAK IN RIGHT ENGINE, DURING TRANSIT CHECK, A HYDRAULIC LEAK WAS DETECTED IN RIGHT ENGINE. MAINTENANCE PERSONNEL PERFORMED REVISION DETECTING DRAIN MAST WITH HYDRAULIC LEAK OF 13 DROPS PER MINUTE; SO THE RIGHT ENGINE EDP WAS REPLACED IAW DMC-B787-A-29-11-02-00B-520A/720A-A, TESTED CORRECT

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