A B727 freighter flight crew overshot their assigned altitude in descent.

Attributes
ACN	404550
Time
Date	199806
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dtw
State Reference	MI
Altitude	msl bound lower : 11700 msl bound upper : 12000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zob tracon : dtw
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	cruise other descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : private pilot : atp
Experience	flight time last 90 days : 15 flight time total : 5900 flight time type : 175
ASRS Report	404550
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ZOB assigned an altitude of 12000 ft. As we passed through 13000 ft I called out 13000 ft for 12000 ft as stated in our fom. ZOB switched us to detroit approach and after tuning the communications radio I looked up and we were descending through 11700 ft. I called out altitude, and both the captain and myself pitched the aircraft up to maintain 12000 ft.

Original NASA ASRS Text

Title: A B727 FREIGHTER FLC OVERSHOT THEIR ASSIGNED ALT IN DSCNT.

Narrative: ZOB ASSIGNED AN ALT OF 12000 FT. AS WE PASSED THROUGH 13000 FT I CALLED OUT 13000 FT FOR 12000 FT AS STATED IN OUR FOM. ZOB SWITCHED US TO DETROIT APCH AND AFTER TUNING THE COMS RADIO I LOOKED UP AND WE WERE DSNDING THROUGH 11700 FT. I CALLED OUT ALT, AND BOTH THE CAPT AND MYSELF PITCHED THE ACFT UP TO MAINTAIN 12000 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.