Altitude crossing restr not made in a B737-200 over dqo VORTAC, de.

Attributes
ACN	540740
Time
Date	200203
Day	Tue
Local Time Of Day	1801 To 2400
Place
State Reference	DE
Altitude	msl bound lower : 18500 msl bound upper : 22000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : dylin 1
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : multi engine pilot : commercial
Experience	flight time last 90 days : 85 flight time total : 9000 flight time type : 2200
ASRS Report	540740
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 8500 flight time type : 1500
ASRS Report	541087
Events
Anomaly	altitude deviation : crossing restriction not met altitude deviation : overshoot inflight encounter other non adherence : published procedure non adherence : clearance non adherence : company policies other anomaly other other anomaly other
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued advisory none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Aircraft Chart Or Publication Flight Crew Human Performance Environmental Factor
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

En route to ewr we were on the dylin 1 arrival. We were descended to FL270 and then told to descend via the dylin 1 arrival. At the time we had about a 70-80 KT tailwind component. I was concerned with my ability to descend and slow down rapidly enough to comply with all the crossing restrs. Once we were cleared to descend via the arrival, I set the next crossing restr of 13000 ft in the altitude window. The first officer concurred and we began our descent as soon as we passed the FL270 fix. As we crossed over dupont VOR, ATC asked our altitude. We told him FL185 and the controller stated we were supposed to be at FL220 at dupont VOR. We then realized our error and continued the arrival without further incident. Obviously both pilots had failed to note the intermediate crossing restr at FL220. The dylin 1 is a fairly new and complicated procedure which I had only done twice before. I believe our unfamiliarity with the procedure, combined with our concern with the large tailwind allowing us to meet the 13000 ft crossing restr, led us to overlook the intermediate restr over dupont VOR. A more thorough review of the arrival prior to actually beginning the procedure would most likely prevent a recurrence of this error.

Original NASA ASRS Text

Title: ALT XING RESTR NOT MADE IN A B737-200 OVER DQO VORTAC, DE.

Narrative: ENRTE TO EWR WE WERE ON THE DYLIN 1 ARR. WE WERE DSNDED TO FL270 AND THEN TOLD TO DSND VIA THE DYLIN 1 ARR. AT THE TIME WE HAD ABOUT A 70-80 KT TAILWIND COMPONENT. I WAS CONCERNED WITH MY ABILITY TO DSND AND SLOW DOWN RAPIDLY ENOUGH TO COMPLY WITH ALL THE XING RESTRS. ONCE WE WERE CLRED TO DSND VIA THE ARR, I SET THE NEXT XING RESTR OF 13000 FT IN THE ALT WINDOW. THE FO CONCURRED AND WE BEGAN OUR DSCNT AS SOON AS WE PASSED THE FL270 FIX. AS WE CROSSED OVER DUPONT VOR, ATC ASKED OUR ALT. WE TOLD HIM FL185 AND THE CTLR STATED WE WERE SUPPOSED TO BE AT FL220 AT DUPONT VOR. WE THEN REALIZED OUR ERROR AND CONTINUED THE ARR WITHOUT FURTHER INCIDENT. OBVIOUSLY BOTH PLTS HAD FAILED TO NOTE THE INTERMEDIATE XING RESTR AT FL220. THE DYLIN 1 IS A FAIRLY NEW AND COMPLICATED PROC WHICH I HAD ONLY DONE TWICE BEFORE. I BELIEVE OUR UNFAMILIARITY WITH THE PROC, COMBINED WITH OUR CONCERN WITH THE LARGE TAILWIND ALLOWING US TO MEET THE 13000 FT XING RESTR, LED US TO OVERLOOK THE INTERMEDIATE RESTR OVER DUPONT VOR. A MORE THOROUGH REVIEW OF THE ARR PRIOR TO ACTUALLY BEGINNING THE PROC WOULD MOST LIKELY PREVENT A RECURRENCE OF THIS ERROR.

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.