B757 crew descended below 8000 ft at denay on approach to runway 24R at lax.

Attributes
ACN	420382
Time
Date	199811
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : ioss airport : lax
State Reference	CA
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	descent : approach descent other
Route In Use	arrival other arrival star : star
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi
Experience	flight time last 90 days : 210 flight time total : 30000 flight time type : 2500
ASRS Report	420382
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : published procedure other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Clt to lax. On arrival lax approach cleared via paradise 2 arrival to runway 25L changed to mudde 3 arrival to runway 25R then cleared direct snrkl intersection and cleared via mitts 1 arrival runway 24R. Descending out of 12000 ft we were asked to keep an air carrier flight in sight. The air carrier was landing left side. We were landing on right side. On the mitts arrival we went slightly below the 8000 ft restr at denay. No conflict with traffic. Lax does a great job of moving traffic but from a pilot's stand, all the arrs being changed (3) for us plus runway changes, and add in trying to visually keep someone in sight, puts a heavy workload in the cockpit. Also, reloading the approach in the FMC takes time when you don't have much time to spare.

Original NASA ASRS Text

Title: B757 CREW DSNDED BELOW 8000 FT AT DENAY ON APCH TO RWY 24R AT LAX.

Narrative: CLT TO LAX. ON ARR LAX APCH CLRED VIA PARADISE 2 ARR TO RWY 25L CHANGED TO MUDDE 3 ARR TO RWY 25R THEN CLRED DIRECT SNRKL INTXN AND CLRED VIA MITTS 1 ARR RWY 24R. DSNDING OUT OF 12000 FT WE WERE ASKED TO KEEP AN ACR FLT IN SIGHT. THE ACR WAS LNDG L SIDE. WE WERE LNDG ON R SIDE. ON THE MITTS ARR WE WENT SLIGHTLY BELOW THE 8000 FT RESTR AT DENAY. NO CONFLICT WITH TFC. LAX DOES A GREAT JOB OF MOVING TFC BUT FROM A PLT'S STAND, ALL THE ARRS BEING CHANGED (3) FOR US PLUS RWY CHANGES, AND ADD IN TRYING TO VISUALLY KEEP SOMEONE IN SIGHT, PUTS A HVY WORKLOAD IN THE COCKPIT. ALSO, RELOADING THE APCH IN THE FMC TAKES TIME WHEN YOU DON'T HAVE MUCH TIME TO SPARE.

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.