DC9 crew had altitude overshoot in ZOB class a airspace.

Attributes
ACN	473500
Time
Date	200005
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : cle.airport
State Reference	OH
Altitude	msl bound lower : 23600 msl bound upper : 24000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob.artcc
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : private pilot : multi engine pilot : instrument pilot : atp pilot : cfi pilot : commercial
Experience	flight time last 90 days : 220 flight time total : 10600 flight time type : 3000
ASRS Report	473500
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : clearance non adherence : company policies
Independent Detector	aircraft equipment : altitude alert other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Distraction by radio call and navigation charts. Descended through assigned altitude by 300-400 ft before realizing excursion. Climbed back to altitude, but not before being requested by ATC. No conflict was noted from TCASII or from ATC.

Original NASA ASRS Text

Title: DC9 CREW HAD ALT OVERSHOOT IN ZOB CLASS A AIRSPACE.

Narrative: DISTR BY RADIO CALL AND NAV CHARTS. DSNDED THROUGH ASSIGNED ALT BY 300-400 FT BEFORE REALIZING EXCURSION. CLBED BACK TO ALT, BUT NOT BEFORE BEING REQUESTED BY ATC. NO CONFLICT WAS NOTED FROM TCASII OR FROM ATC.

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.