Service difficulty report · Distribution Box · Emb EMB505

Difficulty date
August 16, 2025
Submitted
August 19, 2025
Operation
Air carrier
Aircraft
N478QS
Make and model
Emb EMB505
Aircraft serial
50500802
Aircraft time
1,116 hours, 888 cycles
Part
Distribution Box
Part number
SX7EG223
Part serial
0860
Condition
Failed
Location
Zone 100
Stage of operation
CL
How discovered
O
Nature of condition
F, G, H
Precautionary procedure
A

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

What was found

IN FLIGHT AFTER A BRIEF LEVEL OFF LEVEL OFF AT 13000 FT, SHORTLY AFTER RESUMING A CLIMB. THE MFD & PFD2 WENT BLACK & A RED ELEC EMERGENCY CAS ILLUMINATED ON PFD1. ELEC EMER QRC & QRH RAN. BOTH GENERATORS WERE ABLE TO BE RESTORED. AFTER POWER RESTORATION, PTRM NRM FAIL & SWPS FAIL WERE ILLUMINATED & THOSE QRHS WERE ACCOMPLISHED. BACKUP TRIM USED & LANDING WAS ACCOMPLISHED UNEVENLY. REMOVED EPDU . INSTALLED A REPAIRED EPDU. ACCOMPLISHED THE REQUIRED SYS TESTS & OPS CHECKS FOR BOTH THE ELECTRICAL CONTROL PANEL & EPDU. ALL CHECKS & INDICATIONS NORMAL. NO FAULTS. RESTORED ALL ACCESS. ACCOMPLISHED SEVERAL ENGINE STARTS, ALL CHECKED ARE NORMAL. WORK DONE WITH REF AMM 24-01-01, 24-65-03, 24-31-00,24-36-00 & 24-61-00.

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