A B767-200 crew, on arrival to kewr, undershot their assigned altitude.

Attributes
ACN	546555
Time
Date	200205
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : kerno
State Reference	MD
Altitude	msl single value : 29000
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Navigation In Use	other
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
Experience	flight time last 90 days : 50 flight time total : 6500 flight time type : 3500
ASRS Report	546555
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial
Experience	flight time last 90 days : 40 flight time total : 6000 flight time type : 3000
ASRS Report	546341
Events
Anomaly	altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance
Independent Detector	atc equipment other atc equipment : radar other controllera
Resolutory Action	controller : issued alert none taken : detected after the fact
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

ATC cleared us to cross kerno at FL270, on the dylin STAR into newark. The STAR has a crossing restr of kerno at or above FL270, and the FMC was loaded according to the dylin STAR. The aircraft started down at the appropriate time and the descent point appeared accurate. I began briefing the approach. Engine anti-ice was selected on and we neglected to see the change in the descent path. ATC queried us about our descent. At this point we crossed kerno at FL288. The FMC should have been corrected to show crossing kerno at FL270 instead of at or above FL270, and we should have more closely monitored the descent.

Original NASA ASRS Text

Title: A B767-200 CREW, ON ARR TO KEWR, UNDERSHOT THEIR ASSIGNED ALT.

Narrative: ATC CLRED US TO CROSS KERNO AT FL270, ON THE DYLIN STAR INTO NEWARK. THE STAR HAS A XING RESTR OF KERNO AT OR ABOVE FL270, AND THE FMC WAS LOADED ACCORDING TO THE DYLIN STAR. THE ACFT STARTED DOWN AT THE APPROPRIATE TIME AND THE DSCNT POINT APPEARED ACCURATE. I BEGAN BRIEFING THE APCH. ENG ANTI-ICE WAS SELECTED ON AND WE NEGLECTED TO SEE THE CHANGE IN THE DSCNT PATH. ATC QUERIED US ABOUT OUR DSCNT. AT THIS POINT WE CROSSED KERNO AT FL288. THE FMC SHOULD HAVE BEEN CORRECTED TO SHOW XING KERNO AT FL270 INSTEAD OF AT OR ABOVE FL270, AND WE SHOULD HAVE MORE CLOSELY MONITORED THE DSCNT.

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.