B727 crew did not comply with the assigned crossing altitude on the larks 3 into den.

Attributes
ACN	464610
Time
Date	200002
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	intersection : larks
State Reference	CO
Altitude	msl bound lower : 17000 msl bound upper : 22000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : vacating altitude
Route In Use	arrival star : larks 3
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 202
ASRS Report	464610
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance Aircraft
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On feb/xa/00 in-flight pvr-den, during descent to den, I did 'larks 1 arrival' and we were cleared to cross at 17000 ft over larks intersection. But in this occasion, without speed restr, we were flying with GPS connect. I had a mistake to add the distances from we were to larks intersection. When I did a double check I programmed the GPS to show me the distance from we were until larks intersection. In this moment I knew that I was at 35 NM before larks intersection. I descended quickly from FL330 until 17000 ft, but I was crossing at FL220 over larks intersection and we were leveled at 17000 ft 10 NM after larks intersection. I had other mistake -- I never told to den control that I had crossed larks intersection over 17000 ft if they cleared me to cross 17000 ft after larks intersection. I think I not caused any problem because it was XA30 and the traffic was light in the area, and it was not necessary any deviation. I understand that the instructions of ATC to cross any point, we must to do most exactly possible -- this way will be most careful to prevent sits like this.

Original NASA ASRS Text

Title: B727 CREW DID NOT COMPLY WITH THE ASSIGNED XING ALT ON THE LARKS 3 INTO DEN.

Narrative: ON FEB/XA/00 INFLT PVR-DEN, DURING DSCNT TO DEN, I DID 'LARKS 1 ARR' AND WE WERE CLRED TO CROSS AT 17000 FT OVER LARKS INTXN. BUT IN THIS OCCASION, WITHOUT SPD RESTR, WE WERE FLYING WITH GPS CONNECT. I HAD A MISTAKE TO ADD THE DISTANCES FROM WE WERE TO LARKS INTXN. WHEN I DID A DOUBLE CHK I PROGRAMMED THE GPS TO SHOW ME THE DISTANCE FROM WE WERE UNTIL LARKS INTXN. IN THIS MOMENT I KNEW THAT I WAS AT 35 NM BEFORE LARKS INTXN. I DSNDED QUICKLY FROM FL330 UNTIL 17000 FT, BUT I WAS XING AT FL220 OVER LARKS INTXN AND WE WERE LEVELED AT 17000 FT 10 NM AFTER LARKS INTXN. I HAD OTHER MISTAKE -- I NEVER TOLD TO DEN CTL THAT I HAD CROSSED LARKS INTXN OVER 17000 FT IF THEY CLRED ME TO CROSS 17000 FT AFTER LARKS INTXN. I THINK I NOT CAUSED ANY PROB BECAUSE IT WAS XA30 AND THE TFC WAS LIGHT IN THE AREA, AND IT WAS NOT NECESSARY ANY DEV. I UNDERSTAND THAT THE INSTRUCTIONS OF ATC TO CROSS ANY POINT, WE MUST TO DO MOST EXACTLY POSSIBLE -- THIS WAY WILL BE MOST CAREFUL TO PREVENT SITS LIKE THIS.

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.