B737 flight crew concerned with compliance with restrs of korry STAR into lga.

Attributes
ACN	540549
Time
Date	200203
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	navaid : rbv.vortac
State Reference	NJ
Altitude	msl single value : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other other vortac
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : korry
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 250 flight time total : 20000 flight time type : 4000
ASRS Report	540549
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met inflight encounter : weather inflight encounter other non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Supplementary
Problem Areas	Flight Crew Human Performance Weather Aircraft Chart Or Publication
Primary Problem	Chart Or Publication
Situations
Chart	star : korry

Narrative:

Flight to lga airport. Cleared to descend via the korry arrival. Was unable to cross brand intersection at 11000 ft. Crossed brand at 11600 ft. By the time I noticed it, I could not inform ATC in time. Looking at the arrival, I noticed you have 6 mi to descend 2000 ft. At the time, we had a 110 KT tailwind. Plus, during the descent, ATC told us to cross the next fix, korry at 10000 ft at 250 KTS. In a transport category aircraft, it is extremely difficult to meet those altitude restrs with no tailwind and speed restr safely. The FMC was unable to calculate the VNAV path in time for it to be of any use. This is a bad arrival procedure in reference to the 2 crossing altitudes at brand and korry. You do not have the distance to safely and smoothly meet those restrs. I have flown that arrival many times since this event and have yet to meet or see the other pilots meet those restrs. I now tell ATC in advance that I might be high over those fixes every time I am above those altitudes.

Original NASA ASRS Text

Title: B737 FLC CONCERNED WITH COMPLIANCE WITH RESTRS OF KORRY STAR INTO LGA.

Narrative: FLT TO LGA ARPT. CLRED TO DSND VIA THE KORRY ARR. WAS UNABLE TO CROSS BRAND INTXN AT 11000 FT. CROSSED BRAND AT 11600 FT. BY THE TIME I NOTICED IT, I COULD NOT INFORM ATC IN TIME. LOOKING AT THE ARR, I NOTICED YOU HAVE 6 MI TO DSND 2000 FT. AT THE TIME, WE HAD A 110 KT TAILWIND. PLUS, DURING THE DSCNT, ATC TOLD US TO CROSS THE NEXT FIX, KORRY AT 10000 FT AT 250 KTS. IN A TRANSPORT CATEGORY ACFT, IT IS EXTREMELY DIFFICULT TO MEET THOSE ALT RESTRS WITH NO TAILWIND AND SPD RESTR SAFELY. THE FMC WAS UNABLE TO CALCULATE THE VNAV PATH IN TIME FOR IT TO BE OF ANY USE. THIS IS A BAD ARR PROC IN REF TO THE 2 XING ALTS AT BRAND AND KORRY. YOU DO NOT HAVE THE DISTANCE TO SAFELY AND SMOOTHLY MEET THOSE RESTRS. I HAVE FLOWN THAT ARR MANY TIMES SINCE THIS EVENT AND HAVE YET TO MEET OR SEE THE OTHER PLTS MEET THOSE RESTRS. I NOW TELL ATC IN ADVANCE THAT I MIGHT BE HIGH OVER THOSE FIXES EVERY TIME I AM ABOVE THOSE ALTS.

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.