Flight crew of an medium large transport overshot descent altitude during a STAR arrival.

Attributes
ACN	318700
Time
Date	199510
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : msp
State Reference	MN
Altitude	msl bound lower : 10700 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	descent other
Route In Use	arrival other arrival star : star enroute airway : zmp
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	other other : other pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 150 flight time total : 14000 flight time type : 4000
ASRS Report	318700
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared to cross twinz intersection at 11000 ft MSL, inadvertently continued descent to 10700 ft MSL then returned to 11000 ft. This is a relatively new arrival procedure. Previous arrival from this routing required a 10000 ft MSL crossing in same area. We were switching to approach control at this time of level off, and I believe familiarity with old arrival altitudes (10000 ft) caused the undershoot of the new (11000 ft) altitude at this relatively close intersection.

Original NASA ASRS Text

Title: FLC OF AN MLG OVERSHOT DSCNT ALT DURING A STAR ARR.

Narrative: CLRED TO CROSS TWINZ INTXN AT 11000 FT MSL, INADVERTENTLY CONTINUED DSCNT TO 10700 FT MSL THEN RETURNED TO 11000 FT. THIS IS A RELATIVELY NEW ARR PROC. PREVIOUS ARR FROM THIS ROUTING REQUIRED A 10000 FT MSL XING IN SAME AREA. WE WERE SWITCHING TO APCH CTL AT THIS TIME OF LEVEL OFF, AND I BELIEVE FAMILIARITY WITH OLD ARR ALTS (10000 FT) CAUSED THE UNDERSHOOT OF THE NEW (11000 FT) ALT AT THIS RELATIVELY CLOSE INTXN.

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.