Late runway change on riivr STAR to lax results in loss of habso intersection while programming the ...

Attributes
ACN	767284
Time
Date	200712
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : lax.airport
State Reference	CA
Altitude	msl single value : 16000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : sct.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival star : riivr
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : multi engine pilot : instrument pilot : atp
Experience	flight time last 90 days : 100 flight time total : 11000 flight time type : 1000
ASRS Report	767284
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 76 flight time total : 5100 flight time type : 76
ASRS Report	767281
Events
Anomaly	altitude deviation : crossing restriction not met non adherence : clearance non adherence : published procedure other spatial deviation
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended or assigned course
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance Aircraft
Primary Problem	Ambiguous

Narrative:

We were descending on the riivr one arrival to lax and had planned for runway 25L. Just prior to rustt; controllers gave us runway 24R. In the reprogramming of the FMC waypoint; habso was dropped out and aircraft started a right turn to riivr. I felt the right turn was premature and selected heading sel to initiate turn back to the left. When I finally got the FMC correctly programmed for the arrival and runway 24R we were now left of course and high. The controller noticed our off course flight and also noticed our correcting to the right; the controller also at this time gave us an unrestricted descent to 10000 ft. Once we were past riivr and heading to jaxev; we regained the correct course but were still working off the excessive altitude. By decor we were back on both course and altitude. The remainder of the approach and landing were uneventful. At no time did the controller issue any traffic warnings/conflicts nor did the TCAS issue any warnings. Upon review I realized that I had incorrectly reprogrammed the FMC to accommodate the runway change; thereby causing lateral and vertical deviations. Future planning to include such runway changes will be added to my briefing toolbox to help maintain situational awareness.

Original NASA ASRS Text

Title: LATE RWY CHANGE ON RIIVR STAR TO LAX RESULTS IN LOSS OF HABSO INTERSECTION WHILE PROGRAMMING THE CHANGE.

Narrative: WE WERE DESCENDING ON THE RIIVR ONE ARR TO LAX AND HAD PLANNED FOR RWY 25L. JUST PRIOR TO RUSTT; CTLRS GAVE US RWY 24R. IN THE REPROGRAMMING OF THE FMC WAYPOINT; HABSO WAS DROPPED OUT AND ACFT STARTED A RIGHT TURN TO RIIVR. I FELT THE RIGHT TURN WAS PREMATURE AND SELECTED HDG SEL TO INITIATE TURN BACK TO THE LEFT. WHEN I FINALLY GOT THE FMC CORRECTLY PROGRAMMED FOR THE ARR AND RWY 24R WE WERE NOW LEFT OF COURSE AND HIGH. THE CTLR NOTICED OUR OFF COURSE FLT AND ALSO NOTICED OUR CORRECTING TO THE RIGHT; THE CTLR ALSO AT THIS TIME GAVE US AN UNRESTRICTED DESCENT TO 10000 FT. ONCE WE WERE PAST RIIVR AND HDG TO JAXEV; WE REGAINED THE CORRECT COURSE BUT WERE STILL WORKING OFF THE EXCESSIVE ALT. BY DECOR WE WERE BACK ON BOTH COURSE AND ALT. THE REMAINDER OF THE APCH AND LNDG WERE UNEVENTFUL. AT NO TIME DID THE CTLR ISSUE ANY TFC WARNINGS/CONFLICTS NOR DID THE TCAS ISSUE ANY WARNINGS. UPON REVIEW I REALIZED THAT I HAD INCORRECTLY REPROGRAMMED THE FMC TO ACCOMMODATE THE RWY CHANGE; THEREBY CAUSING LATERAL AND VERT DEVIATIONS. FUTURE PLANNING TO INCLUDE SUCH RWY CHANGES WILL BE ADDED TO MY BRIEFING TOOLBOX TO HELP MAINTAIN SITUATIONAL AWARENESS.

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.

Late runway change on riivr STAR to lax results in loss of habso intersection while programming the change.