Altitude deviation altitude overshot when autoplt automatic capture fails to do so.

Attributes
ACN	355430
Time
Date	199612
Day	Sun
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dfw
State Reference	TX
Altitude	msl bound lower : 7650 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : dfw
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Route In Use	arrival other arrival star : star enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial pilot : flight engineer pilot : instrument pilot : atp pilot : private
Experience	flight time last 90 days : 180 flight time total : 9000 flight time type : 2000
ASRS Report	355430
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Autoplt failed to capture at 8000 ft. First officer intervened and bottomed out at 7650 ft. First officer climbed back up to 8000 ft.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT WHEN AUTOPLT AUTO CAPTURE FAILS TO DO SO.

Narrative: AUTOPLT FAILED TO CAPTURE AT 8000 FT. FO INTERVENED AND BOTTOMED OUT AT 7650 FT. FO CLBED BACK UP TO 8000 FT.

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.