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An air carrier large transport crew with an advanced cockpit had less than standard separation with another aircraft in the lax approach corridor.
| Attributes | |
| ACN | 339484 |
| Time | |
| Date | 199606 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : lax |
| State Reference | CA |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : lax |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | approach : straight in |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 50 flight time total : 20000 flight time type : 300 |
| ASRS Report | 339484 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : weather non adherence : required legal separation non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : became reoriented flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
| Situations | |
| ATC Facility | procedure or policy : unspecified |
Narrative:
We had been set up for an ILS to runway 24 at lax. During modified base, we were instructed to land on runway 24L (visual). Copilot was flying and I was reprogramming FMC for runway 24L. We were also being given traffic to follow for runway 24L. We thought we had correct traffic, so we began turning to final. I finished programming FMC and looked up to see another aircraft. Now we were unsure which traffic to follow. Copilot decreased bank angle until we could figure out the traffic situation. Approach advised us we were encroaching on runway 25 approach. He gave us a turn away from the runway 25 approach corridor back to the runway 24L approach. By now we realized we had been watching the wrong traffic. Every time I fly into lax, approach changes your approach or landing runway 1 to 3 times. We have to reprogram FMC every time. ATC should realize with an automated cockpit, approach changes distract one crew member from traffic watching. Even though this was supposed to be a visual approach, the north side of complex was obscured with a thin cloud layer. This was why I was reprogramming the FMC for runway 24L.
Original NASA ASRS Text
Title: AN ACR LGT CREW WITH AN ADVANCED COCKPIT HAD LTSS WITH ANOTHER ACFT IN THE LAX APCH CORRIDOR.
Narrative: WE HAD BEEN SET UP FOR AN ILS TO RWY 24 AT LAX. DURING MODIFIED BASE, WE WERE INSTRUCTED TO LAND ON RWY 24L (VISUAL). COPLT WAS FLYING AND I WAS REPROGRAMMING FMC FOR RWY 24L. WE WERE ALSO BEING GIVEN TFC TO FOLLOW FOR RWY 24L. WE THOUGHT WE HAD CORRECT TFC, SO WE BEGAN TURNING TO FINAL. I FINISHED PROGRAMMING FMC AND LOOKED UP TO SEE ANOTHER ACFT. NOW WE WERE UNSURE WHICH TFC TO FOLLOW. COPLT DECREASED BANK ANGLE UNTIL WE COULD FIGURE OUT THE TFC SIT. APCH ADVISED US WE WERE ENCROACHING ON RWY 25 APCH. HE GAVE US A TURN AWAY FROM THE RWY 25 APCH CORRIDOR BACK TO THE RWY 24L APCH. BY NOW WE REALIZED WE HAD BEEN WATCHING THE WRONG TFC. EVERY TIME I FLY INTO LAX, APCH CHANGES YOUR APCH OR LNDG RWY 1 TO 3 TIMES. WE HAVE TO REPROGRAM FMC EVERY TIME. ATC SHOULD REALIZE WITH AN AUTOMATED COCKPIT, APCH CHANGES DISTRACT ONE CREW MEMBER FROM TFC WATCHING. EVEN THOUGH THIS WAS SUPPOSED TO BE A VISUAL APCH, THE N SIDE OF COMPLEX WAS OBSCURED WITH A THIN CLOUD LAYER. THIS WAS WHY I WAS REPROGRAMMING THE FMC FOR RWY 24L.
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.