On climb out medium large transport crew has electrical problem unable to resolve.

Attributes
ACN	225307
Time
Date	199211
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : pit
State Reference	PA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : pit tower : fmn
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 45 flight time total : 19000 flight time type : 1000
ASRS Report	225307
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

I flew flight pit to evv. After a routine departure from runway 28C, we proceeded with assigned left turn to the south and on course. After passing about 5000 ft, we noticed a white cockpit dome light coming on by itself. A moment later the first officer read on the right MFDU that #2 dc bus failed. I instructed first officer to pursue the problem and told him that I will fly the airplane and handle ATC. First officer found circuit breaker tru 2 sply popped out. We decided to try to reset it once, but it popped out again immediately, followed by multiple messages coming up on the both left and right MFDU's. We decided that this was not an ordinary electronic glitch and requested a return to pit. We were given nice cooperation from ATC, and with a very clear night, unlimited visibility, and smooth air, we encountered no problems whatsoever in handling the aircraft. We executed a visual approach to runway 28L, and returned uneventfully to the gate. Maintenance found a bad #2 tru and replaced same.

Original NASA ASRS Text

Title: ON CLBOUT MLG CREW HAS ELECTRICAL PROBLEM UNABLE TO RESOLVE.

Narrative: I FLEW FLT PIT TO EVV. AFTER A ROUTINE DEP FROM RWY 28C, WE PROCEEDED WITH ASSIGNED L TURN TO THE S AND ON COURSE. AFTER PASSING ABOUT 5000 FT, WE NOTICED A WHITE COCKPIT DOME LIGHT COMING ON BY ITSELF. A MOMENT LATER THE FO READ ON THE R MFDU THAT #2 DC BUS FAILED. I INSTRUCTED FO TO PURSUE THE PROBLEM AND TOLD HIM THAT I WILL FLY THE AIRPLANE AND HANDLE ATC. FO FOUND CIRCUIT BREAKER TRU 2 SPLY POPPED OUT. WE DECIDED TO TRY TO RESET IT ONCE, BUT IT POPPED OUT AGAIN IMMEDIATELY, FOLLOWED BY MULTIPLE MESSAGES COMING UP ON THE BOTH L AND R MFDU'S. WE DECIDED THAT THIS WAS NOT AN ORDINARY ELECTRONIC GLITCH AND REQUESTED A RETURN TO PIT. WE WERE GIVEN NICE COOPERATION FROM ATC, AND WITH A VERY CLR NIGHT, UNLIMITED VISIBILITY, AND SMOOTH AIR, WE ENCOUNTERED NO PROBLEMS WHATSOEVER IN HANDLING THE ACFT. WE EXECUTED A VISUAL APCH TO RWY 28L, AND RETURNED UNEVENTFULLY TO THE GATE. MAINT FOUND A BAD #2 TRU AND REPLACED SAME.

Data retrieved from NASA's ASRS site as of July 2007 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.