A md-10's bus tie relay apparently failed after number two engine was shutdown during taxi in so the...

Attributes
ACN	1032426
Time
Date	201208
Local Time Of Day	0001-0600
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Make Model Name	DC-10 10
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Component
Aircraft Component	Electrical Distribution Relay
Person 1
Function	First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Upon taxiing in; after landing; captain elected to shut down #2 engine for less than all engine taxi in. #2 generator bus and AC ground services bus went unpowered. I think the bus tie relay did not close so we lost all systems/functionality related to the #2 generator bus. Continued taxi to the gate and consulted with maintenance about how to handle the problem before shutting down engines 1 and 3. During the taxi in; we had no taxi light or runway/turnoff lights; possibly no beacon or navigation lights. We kept the strobe lights on for identification and taxied to the line. The airplane had the APU MEL'ed inoperative.

Original NASA ASRS Text

Title: A MD-10's Bus Tie Relay apparently failed after number two engine was shutdown during taxi in so the number Two Generator Bus and AC Ground Service Bus were both lost affecting the taxi light and runway turn off lights.

Narrative: Upon taxiing in; after landing; Captain elected to shut down #2 engine for less than all engine taxi in. #2 Generator Bus and AC Ground Services Bus went unpowered. I think the Bus Tie relay did not close so we lost all systems/functionality related to the #2 Generator Bus. Continued taxi to the gate and consulted with Maintenance about how to handle the problem before shutting down engines 1 and 3. During the taxi in; we had no taxi light or runway/turnoff lights; possibly no beacon or navigation lights. We kept the strobe lights on for identification and taxied to the line. The airplane had the APU MEL'ed inoperative.

Data retrieved from NASA's ASRS site as of July 2013 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

A md-10's bus tie relay apparently failed after number two engine was shutdown during taxi in so the number two generator bus and AC ground service bus were both lost affecting the taxi light and runway turn off lights.