Air carrier medium large transport overshot altitude on descent.

Attributes
ACN	86903
Time
Date	198805
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lit
State Reference	AR
Altitude	msl bound lower : 10500 msl bound upper : 11000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lit
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 220 flight time total : 3500 flight time type : 220
ASRS Report	86903
Person 2
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	controller : issued new clearance flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Passed assigned altitude of 11000', down to 10500' before caught. First officer caught bust. Using slightly unusual aircraft cockpit due to recent merger. Unfamiliar gauges and autoplt. Usual autoplt captures altitude. Autoplt in use does not, plus altimeter in use is smaller and harder to read than usual aircraft. Began climb to recover, but assigned lower before level. First officer busy, looked up and noticed altitude too low.

Original NASA ASRS Text

Title: ACR MLG OVERSHOT ALT ON DESCENT.

Narrative: PASSED ASSIGNED ALT OF 11000', DOWN TO 10500' BEFORE CAUGHT. F/O CAUGHT BUST. USING SLIGHTLY UNUSUAL ACFT COCKPIT DUE TO RECENT MERGER. UNFAMILIAR GAUGES AND AUTOPLT. USUAL AUTOPLT CAPTURES ALT. AUTOPLT IN USE DOES NOT, PLUS ALTIMETER IN USE IS SMALLER AND HARDER TO READ THAN USUAL ACFT. BEGAN CLB TO RECOVER, BUT ASSIGNED LOWER BEFORE LEVEL. F/O BUSY, LOOKED UP AND NOTICED ALT TOO LOW.

Data retrieved from NASA's ASRS site as of August 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.