A B757 flight crew crossed above a required altitude on arrival to lax.

Attributes
ACN	450990
Time
Date	199910
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 11500
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B757-200
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	arrival star : pdz 3
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	450990
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : anomaly accepted
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Location: mitts intersection. On pdz arrival, assigned runway 25L, after pdz VOR runway change to runway 24R. Went heads down to change approach in CDU. The approach would not come up for some reason, probably due to operator error. Realized that we were getting behind, so tuned new ILS frequency manually and intercepted localizer for runway 24R. Altitude crossing mitts may have been 3500 ft high. By the time I caught up with events, we were within parameters for the approach, but I couldn't swear to the mitts altitude. Lesson learned: first get the raw data changed, then mess with the box.

Original NASA ASRS Text

Title: A B757 FLC CROSSED ABOVE A REQUIRED ALT ON ARR TO LAX.

Narrative: LOCATION: MITTS INTXN. ON PDZ ARR, ASSIGNED RWY 25L, AFTER PDZ VOR RWY CHANGE TO RWY 24R. WENT HEADS DOWN TO CHANGE APCH IN CDU. THE APCH WOULD NOT COME UP FOR SOME REASON, PROBABLY DUE TO OPERATOR ERROR. REALIZED THAT WE WERE GETTING BEHIND, SO TUNED NEW ILS FREQ MANUALLY AND INTERCEPTED LOC FOR RWY 24R. ALT XING MITTS MAY HAVE BEEN 3500 FT HIGH. BY THE TIME I CAUGHT UP WITH EVENTS, WE WERE WITHIN PARAMETERS FOR THE APCH, BUT I COULDN'T SWEAR TO THE MITTS ALT. LESSON LEARNED: FIRST GET THE RAW DATA CHANGED, THEN MESS WITH THE BOX.

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.