A crj-200 flight is high over brand intersection after the crew is unable to deal with a failed FMS and turbulence on their descent on the eno korry 1 STAR arrival to lga, ny.

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Attributes
ACN	537513
Time
Date	200202
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : rbv.vortac
State Reference	NJ
Altitude	msl bound lower : 11000 msl bound upper : 13000
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival star : korry
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 40 flight time total : 1300 flight time type : 40
ASRS Report	537513
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 : turbulence inflight encounter : weather non adherence : published procedure non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	other
Supplementary
Problem Areas	Aircraft Chart Or Publication Flight Crew Human Performance Weather
Primary Problem	Flight Crew Human Performance
Situations
Chart	star : korry

Narrative:

En route from iad to lga, experienced an FMS failure in IMC while flying the korry 1 arrival. As PNF (first officer) assisting the captain with navigation, I brought it to his attention that we needed to be down to 11000 ft for brand intersection. He instructed me to inform ATC that we would not be down in time. We were high over brand and possibly korry as well. I could have done a better job briefing the captain as we flew the arrival to ease his workload. This arrival is very confusing to read with its many fixes and altitude crossing restrs (especially while flying in turbulence). Chart maker should consider enlarging this arrival (perhaps by splitting it in half on the front and back side of a sheet). In addition, it would be helpful to use color to differentiate distances defining fixes, fix names, and crossing restrs. This would help them to be idented quicker while being bounced around in turbulence as we were on this flight.

Original NASA ASRS Text

Title: A CRJ-200 FLT IS HIGH OVER BRAND INTXN AFTER THE CREW IS UNABLE TO DEAL WITH A FAILED FMS AND TURB ON THEIR DSCNT ON THE ENO KORRY 1 STAR ARR TO LGA, NY.

Narrative: ENRTE FROM IAD TO LGA, EXPERIENCED AN FMS FAILURE IN IMC WHILE FLYING THE KORRY 1 ARR. AS PNF (FO) ASSISTING THE CAPT WITH NAV, I BROUGHT IT TO HIS ATTN THAT WE NEEDED TO BE DOWN TO 11000 FT FOR BRAND INTXN. HE INSTRUCTED ME TO INFORM ATC THAT WE WOULD NOT BE DOWN IN TIME. WE WERE HIGH OVER BRAND AND POSSIBLY KORRY AS WELL. I COULD HAVE DONE A BETTER JOB BRIEFING THE CAPT AS WE FLEW THE ARR TO EASE HIS WORKLOAD. THIS ARR IS VERY CONFUSING TO READ WITH ITS MANY FIXES AND ALT XING RESTRS (ESPECIALLY WHILE FLYING IN TURB). CHART MAKER SHOULD CONSIDER ENLARGING THIS ARR (PERHAPS BY SPLITTING IT IN HALF ON THE FRONT AND BACK SIDE OF A SHEET). IN ADDITION, IT WOULD BE HELPFUL TO USE COLOR TO DIFFERENTIATE DISTANCES DEFINING FIXES, FIX NAMES, AND XING RESTRS. THIS WOULD HELP THEM TO BE IDENTED QUICKER WHILE BEING BOUNCED AROUND IN TURB AS WE WERE ON THIS FLT.

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.