SDR UPS01835025

Service difficulty report · Relay · Doug DC873F

Difficulty date: February 20, 2001
Submitted: February 21, 2001
Operation: Air carrier
Aircraft: N852UP
Make and model: Doug DC873F
Aircraft serial: 46052
System (JASC): 2450 · AC Power Distribution System
Part: Relay
Part number: 50137002
Part serial: 3332ML
Condition: Failed
Location: Nr 2 Buss Tie
Stage of operation: UK
How discovered: O
Nature of condition: B
Precautionary procedure: O

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

What was found

INSPECTION TYPE:N/A, BEFORE BLOCK OUT NR 2 BUS WENT OFF LINE AND LIGHT SMOKE WAS OBSERVED IN THE COCKPIT. REMOVED AND REPLACED NR 2 BUS TIE RELAY W/REF TO M/M 24-20-03. RAN ALL ENGINES, NR 2 BUS TIE OPERATES NORMALLY, W/REF TO M/M 24-20-00. NO SMOKE OBSERVED IN COCKPIT.

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