A320 crew may have descended below trtle crossing restr on seavu 1 to lax after runway change.

Attributes
ACN	738657
Time
Date	200705
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 16500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon tower : bos.tower
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : approach
Route In Use	arrival star : seavui1
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 250 flight time total : 8000 flight time type : 2000
ASRS Report	738657
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to assigned altitude
Supplementary
Problem Areas	Aircraft ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

Descending via seavu 1 arrival into lax; set-up for runway 24R. Shortly after passing konzl at 17000 ft our runway was changed to runway 25L. FMS was changed to runway 25L and inserted. Trtle and cataw dropped out of the flight plan. We were previously on profile to cross trtle between 16000 ft - 17000 ft. We manually entered cataw and continued arrival. Approach did not say anything to us.

Original NASA ASRS Text

Title: A320 CREW MAY HAVE DSNDED BELOW TRTLE CROSSING RESTR ON SEAVU 1 TO LAX AFTER RWY CHANGE.

Narrative: DESCENDING VIA SEAVU 1 ARR INTO LAX; SET-UP FOR RWY 24R. SHORTLY AFTER PASSING KONZL AT 17000 FT OUR RWY WAS CHANGED TO RWY 25L. FMS WAS CHANGED TO RWY 25L AND INSERTED. TRTLE AND CATAW DROPPED OUT OF THE FLT PLAN. WE WERE PREVIOUSLY ON PROFILE TO CROSS TRTLE BETWEEN 16000 FT - 17000 FT. WE MANUALLY ENTERED CATAW AND CONTINUED ARR. APCH DID NOT SAY ANYTHING TO US.

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.