Altitude deviation after autoplt tripoff.

Attributes
ACN	283563
Time
Date	199409
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : iso
State Reference	NC
Altitude	msl bound lower : 26000 msl bound upper : 28000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdc tracon : edw
Operator	common carrier : air carrier
Make Model Name	A300
Operating Under FAR Part	Part 121
Navigation In Use	Other
Flight Phase	cruise other descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 240 flight time total : 11000 flight time type : 2000
ASRS Report	283563
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude 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:

Flight from ewr to mco at FL280, we were operating with #1 generator placarded inoperative. The APU shutdown caused the autoplt to trip off. We lost 300 ft while recovering from the autoplt tripping off. ATC (center) asked if we were having a problem. We asked for FL260, we descended and were able to restart APU and continued on to orlando.

Original NASA ASRS Text

Title: ALTDEV AFTER AUTOPLT TRIPOFF.

Narrative: FLT FROM EWR TO MCO AT FL280, WE WERE OPERATING WITH #1 GENERATOR PLACARDED INOP. THE APU SHUTDOWN CAUSED THE AUTOPLT TO TRIP OFF. WE LOST 300 FT WHILE RECOVERING FROM THE AUTOPLT TRIPPING OFF. ATC (CTR) ASKED IF WE WERE HAVING A PROB. WE ASKED FOR FL260, WE DSNDED AND WERE ABLE TO RESTART APU AND CONTINUED ON TO ORLANDO.

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.