Unable to make crossing restriction account performance mode of autoplt slow.

Attributes
ACN	193342
Time
Date	199111
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	atc facility : dpk
State Reference	NY
Altitude	msl bound lower : 20000 msl bound upper : 20900
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zny
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other
Flight Phase	descent 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 : 350 flight time total : 7725 flight time type : 1600
ASRS Report	193342
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

About 20 NM southwest jfk at FL270, cleared to cross 10 southwest deer park at FL200. Aircraft was using autoplt, and also using 'perf' (performance management system). Due to the fact that perf reacts so slowly, I wasted valuable time (using it to descend) in a tight descent. By the time I saw we were going to be late (high) at the crossing, it was impossible to make it, even with full speed brakes (out of perf mode now) throttles idle and 320 KIAS. We crossed 10 NM southwest deer park at FL209. I will not use perf is descent in the future.

Original NASA ASRS Text

Title: UNABLE TO MAKE XING RESTRICTION ACCOUNT PERFORMANCE MODE OF AUTOPLT SLOW.

Narrative: ABOUT 20 NM SW JFK AT FL270, CLRED TO CROSS 10 SW DEER PARK AT FL200. ACFT WAS USING AUTOPLT, AND ALSO USING 'PERF' (PERFORMANCE MGMNT SYS). DUE TO THE FACT THAT PERF REACTS SO SLOWLY, I WASTED VALUABLE TIME (USING IT TO DSND) IN A TIGHT DSCNT. BY THE TIME I SAW WE WERE GOING TO BE LATE (HIGH) AT THE XING, IT WAS IMPOSSIBLE TO MAKE IT, EVEN WITH FULL SPD BRAKES (OUT OF PERF MODE NOW) THROTTLES IDLE AND 320 KIAS. WE CROSSED 10 NM SW DEER PARK AT FL209. I WILL NOT USE PERF IS DSCNT IN THE FUTURE.

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.