An air carrier medium large transport had an altitude deviation after losing half of its instruments...

Attributes
ACN	234807
Time
Date	199302
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rdu airport : clt
State Reference	NC
Altitude	msl bound lower : 23000 msl bound upper : 23000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : atp pilot : flight engineer
Experience	flight time total : 15000 flight time type : 4900
ASRS Report	234807
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : overshoot non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	other

Narrative:

On climb out from clt, aircraft experienced a loss of the right generator. Multiple warnings appeared. The first officer was flying at the time and we had clearance to climb to 23000 ft. All of the instruments were lost on the right side of the aircraft and we were about to level at 23000 ft when the electrical loss occurred. The captain took control of the aircraft and during the transfer an altitude deviation of about 2000 ft occurred. We corrected it once and told ZTL about the altitude deviation and the electrical problem. They acknowledged and said our transponder was not working. Within a few mins we were on a backup generator and proceeded to our destination of bos. The deviation was a result of the loss of the right generator and all instruments on the right side of the aircraft.

Original NASA ASRS Text

Title: AN ACR MLG HAD AN ALTDEV AFTER LOSING HALF OF ITS INSTS.

Narrative: ON CLBOUT FROM CLT, ACFT EXPERIENCED A LOSS OF THE R GENERATOR. MULTIPLE WARNINGS APPEARED. THE FO WAS FLYING AT THE TIME AND WE HAD CLRNC TO CLB TO 23000 FT. ALL OF THE INSTS WERE LOST ON THE R SIDE OF THE ACFT AND WE WERE ABOUT TO LEVEL AT 23000 FT WHEN THE ELECTRICAL LOSS OCCURRED. THE CAPT TOOK CTL OF THE ACFT AND DURING THE TRANSFER AN ALTDEV OF ABOUT 2000 FT OCCURRED. WE CORRECTED IT ONCE AND TOLD ZTL ABOUT THE ALTDEV AND THE ELECTRICAL PROB. THEY ACKNOWLEDGED AND SAID OUR XPONDER WAS NOT WORKING. WITHIN A FEW MINS WE WERE ON A BACKUP GENERATOR AND PROCEEDED TO OUR DEST OF BOS. THE DEV WAS A RESULT OF THE LOSS OF THE R GENERATOR AND ALL INSTS ON THE R SIDE OF THE ACFT.

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.