Air carrier large transport track heading deviation on SID out of lax.

Attributes
ACN	187300
Time
Date	199108
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : lax
State Reference	CA
Altitude	agl bound lower : 0 agl bound upper : 12000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : lax tower : lax
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude climbout : takeoff ground other : taxi
Route In Use	departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 15000 flight time type : 400
ASRS Report	187300
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8000 flight time type : 600
ASRS Report	187303
Events
Anomaly	non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera other flight crewa
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Preparing for departure lax-ord, received clearance for loop 8 departure. Daggett transition. We planned departure on runway 25R. Upon receiving pushback clearance we were told to expect runway 24. The first officer reprogrammed the FMC for a 24L departure. When calling for taxi clearance we were given runway 25R. During taxi out the first officer reentered runway 25R in the FMC. After departure on 25R we were cleared left turn to lax on course. The captain was flying using flight director and LNAV guidance. After passing the VOR and making a right turn on course I (captain) noticed sli coming into view on my HSI. It is not part of the departure. I switched my HSI to VOR mode and started a left turn back to the lax 041 degree radial. About that time lax departure control gave me a vector to intercept the radial. While en route to ord we reentered our clearance on route 2 pages in the same sequence as departure and found that when we changed runways the FMC dropped the keggs and coopp intxns and added sli on the legs page. The departure and route pages still indicated loop 8 - daggett transition.

Original NASA ASRS Text

Title: ACR LGT TRACK HDG DEV ON SID OUT OF LAX.

Narrative: PREPARING FOR DEP LAX-ORD, RECEIVED CLRNC FOR LOOP 8 DEP. DAGGETT TRANSITION. WE PLANNED DEP ON RWY 25R. UPON RECEIVING PUSHBACK CLRNC WE WERE TOLD TO EXPECT RWY 24. THE FO REPROGRAMMED THE FMC FOR A 24L DEP. WHEN CALLING FOR TAXI CLRNC WE WERE GIVEN RWY 25R. DURING TAXI OUT THE FO REENTERED RWY 25R IN THE FMC. AFTER DEP ON 25R WE WERE CLRED L TURN TO LAX ON COURSE. THE CAPT WAS FLYING USING FLT DIRECTOR AND LNAV GUIDANCE. AFTER PASSING THE VOR AND MAKING A R TURN ON COURSE I (CAPT) NOTICED SLI COMING INTO VIEW ON MY HSI. IT IS NOT PART OF THE DEP. I SWITCHED MY HSI TO VOR MODE AND STARTED A L TURN BACK TO THE LAX 041 DEG RADIAL. ABOUT THAT TIME LAX DEP CTL GAVE ME A VECTOR TO INTERCEPT THE RADIAL. WHILE ENRTE TO ORD WE REENTERED OUR CLRNC ON RTE 2 PAGES IN THE SAME SEQUENCE AS DEP AND FOUND THAT WHEN WE CHANGED RWYS THE FMC DROPPED THE KEGGS AND COOPP INTXNS AND ADDED SLI ON THE LEGS PAGE. THE DEP AND RTE PAGES STILL INDICATED LOOP 8 - DAGGETT TRANSITION.

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.