Altitude deviation altitude overshot -- air carrier descends below assigned altitude.

Attributes
ACN	308390
Time
Date	199506
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : gqe
State Reference	AR
Altitude	msl bound lower : 24000 msl bound upper : 27000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zme
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	other : other
Navigation In Use	Other Other
Flight Phase	cruise 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 : 30 flight time total : 6000 flight time type : 200
ASRS Report	308390
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 5000 flight time type : 60
ASRS Report	308711
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

At FL330 we received clearance to descend to FL310 discretion FL240. In descent, amendment descent FL290, discretion FL240. During descent to FL290, clearance amended to FL270. Leveled FL270 approximately 15 NM, the continued profile descent to FL240. Leveling at FL240 center called B-52 traffic and we called leveling FL240. Center then informed us we were only cleared to FL270.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT -- ACR DSNDS BELOW ASSIGNED ALT.

Narrative: AT FL330 WE RECEIVED CLRNC TO DSND TO FL310 DISCRETION FL240. IN DSCNT, AMENDMENT DSCNT FL290, DISCRETION FL240. DURING DSCNT TO FL290, CLRNC AMENDED TO FL270. LEVELED FL270 APPROX 15 NM, THE CONTINUED PROFILE DSCNT TO FL240. LEVELING AT FL240 CTR CALLED B-52 TFC AND WE CALLED LEVELING FL240. CTR THEN INFORMED US WE WERE ONLY CLRED TO FL270.

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.