B727 crew had altitude overshoot on descent into lga.

Attributes
ACN	415991
Time
Date	199810
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ard
State Reference	PA
Altitude	msl bound lower : 10600 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : n90 tower : hou
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	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 : atp
ASRS Report	415991
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 200 flight time total : 5600 flight time type : 200
ASRS Report	415990
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

On the minks 1 arrival, with new york approach, crossing yardley and descending to 11000 ft, the autoplt failed to capture the altitude. Aircraft descended approximately 300 ft prior to leveloff with immediate return to 11000 ft. Supplemental information from acn 415990: during descent to assigned altitude of 11000 ft, autoplt failed to capture altitude. Autoplt display had indicated capture. Noticed problem as we descended through 11000 ft. Subsequent altitude loss during recovery resulted in altitude deviation of approximately -400 ft (10600 ft).

Original NASA ASRS Text

Title: B727 CREW HAD ALT OVERSHOOT ON DSCNT INTO LGA.

Narrative: ON THE MINKS 1 ARR, WITH NEW YORK APCH, XING YARDLEY AND DSNDING TO 11000 FT, THE AUTOPLT FAILED TO CAPTURE THE ALT. ACFT DSNDED APPROX 300 FT PRIOR TO LEVELOFF WITH IMMEDIATE RETURN TO 11000 FT. SUPPLEMENTAL INFO FROM ACN 415990: DURING DSCNT TO ASSIGNED ALT OF 11000 FT, AUTOPLT FAILED TO CAPTURE ALT. AUTOPLT DISPLAY HAD INDICATED CAPTURE. NOTICED PROB AS WE DSNDED THROUGH 11000 FT. SUBSEQUENT ALT LOSS DURING RECOVERY RESULTED IN ALTDEV OF APPROX -400 FT (10600 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.