Citation CE750 flight crew has an altitude deviation during the seavu 1 arrival to lax.

Attributes
ACN	708525
Time
Date	200608
Local Time Of Day	1201 To 1800
Place
Locale Reference	intersection : dixxn
State Reference	CA
Altitude	msl single value : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : charter
Make Model Name	Citation X
Operating Under FAR Part	Part 135
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : seavu one
Flight Plan	IFR
Person 1
Affiliation	company : charter
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 187 flight time total : 6100 flight time type : 210
ASRS Report	708525
Person 2
Affiliation	company : charter
Function	flight crew : captain
Events
Anomaly	altitude deviation : overshoot non adherence : clearance non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Supplementary
Problem Areas	Chart Or Publication Flight Crew Human Performance Airspace Structure
Primary Problem	Flight Crew Human Performance

Narrative:

We were told to expect the civet arrival to lax and we anticipated landing on runway 24R. Shortly before beginning the arrival; we were given the seavu arrival and we still anticipated landing on runway 24R. While descending on the seavu arrival; we were told to expect runway 25R. When I loaded runway 25R into the FMS; it dropped the arrival which I reloaded. While I was setting up for the approach; I noticed we were descending through 12000 ft prior to dixnn which had a crossing restr of 12000 ft. We continued to descend to 11000 ft and shortly after that were given a heading and altitude of 7000 ft from ATC with no mention of our present altitude. I am not sure if the seavu arrival was compatible with the approach to runway 25R or what altitude ATC expected us to be at when they gave us a heading and altitude. The frequency was highly congested and a previous call to us could have been missed. We also had a very short time to review the arrival and approach.

Original NASA ASRS Text

Title: CITATION CE750 FLT CREW HAS AN ALTDEV DURING THE SEAVU 1 ARR TO LAX.

Narrative: WE WERE TOLD TO EXPECT THE CIVET ARR TO LAX AND WE ANTICIPATED LNDG ON RWY 24R. SHORTLY BEFORE BEGINNING THE ARR; WE WERE GIVEN THE SEAVU ARR AND WE STILL ANTICIPATED LNDG ON RWY 24R. WHILE DSNDING ON THE SEAVU ARR; WE WERE TOLD TO EXPECT RWY 25R. WHEN I LOADED RWY 25R INTO THE FMS; IT DROPPED THE ARR WHICH I RELOADED. WHILE I WAS SETTING UP FOR THE APCH; I NOTICED WE WERE DSNDING THROUGH 12000 FT PRIOR TO DIXNN WHICH HAD A XING RESTR OF 12000 FT. WE CONTINUED TO DSND TO 11000 FT AND SHORTLY AFTER THAT WERE GIVEN A HDG AND ALT OF 7000 FT FROM ATC WITH NO MENTION OF OUR PRESENT ALT. I AM NOT SURE IF THE SEAVU ARR WAS COMPATIBLE WITH THE APCH TO RWY 25R OR WHAT ALT ATC EXPECTED US TO BE AT WHEN THEY GAVE US A HDG AND ALT. THE FREQ WAS HIGHLY CONGESTED AND A PREVIOUS CALL TO US COULD HAVE BEEN MISSED. WE ALSO HAD A VERY SHORT TIME TO REVIEW THE ARR AND APCH.

Data retrieved from NASA's ASRS site as of January 2009 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.