A B737-300 crew, descending into ewr, overshot a STAR crossing restr.

Attributes
ACN	538914
Time
Date	200202
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : somto
State Reference	NJ
Altitude	msl single value : 10700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zny.artcc
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival star : dylin 1
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 250
ASRS Report	538914
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	altitude deviation : overshoot non adherence : published procedure non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Consequence	other
Supplementary
Problem Areas	Flight Crew Human Performance Airport
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On the dylin 1 into ewr, strong tailwind, were above VNAV patch for the descent. Captain removed the 'at or above' altitudes and replaced them with hard altitudes and then used level change. I was still flying, the captain was calling in range and getting the ATIS. We were 300 ft below the altitude called for at somto intersection. Recommend not changing the at or above altitudes in FMS to hard altitudes, better xchk of each other, and start the descent sooner with a tailwind.

Original NASA ASRS Text

Title: A B737-300 CREW, DSNDING INTO EWR, OVERSHOT A STAR XING RESTR.

Narrative: ON THE DYLIN 1 INTO EWR, STRONG TAILWIND, WERE ABOVE VNAV PATCH FOR THE DSCNT. CAPT REMOVED THE 'AT OR ABOVE' ALTS AND REPLACED THEM WITH HARD ALTS AND THEN USED LEVEL CHANGE. I WAS STILL FLYING, THE CAPT WAS CALLING IN RANGE AND GETTING THE ATIS. WE WERE 300 FT BELOW THE ALT CALLED FOR AT SOMTO INTXN. RECOMMEND NOT CHANGING THE AT OR ABOVE ALTS IN FMS TO HARD ALTS, BETTER XCHK OF EACH OTHER, AND START THE DSCNT SOONER WITH A TAILWIND.

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.