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|
Attributes | |
ACN | 124355 |
Time | |
Date | 198910 |
Day | Thu |
Local Time Of Day | 0601 To 1200 |
Place | |
Locale Reference | atc facility : lax |
State Reference | CA |
Altitude | msl bound lower : 14000 msl bound upper : 14000 |
Environment | |
Flight Conditions | VMC |
Light | Daylight |
Aircraft 1 | |
Controlling Facilities | tracon : lax tower : sav |
Operator | common carrier : air carrier |
Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
Navigation In Use | Other |
Flight Phase | descent : approach |
Route In Use | approach : visual arrival : profile descent |
Flight Plan | IFR |
Aircraft 2 | |
Operator | common carrier : air carrier |
Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
Navigation In Use | Other Other |
Flight Phase | descent : approach |
Route In Use | approach : visual arrival : profile descent |
Flight Plan | IFR |
Person 1 | |
Affiliation | company : air carrier |
Function | flight crew : captain oversight : pic |
Qualification | pilot : instrument pilot : flight engineer pilot : cfi pilot : atp pilot : commercial |
Experience | flight time last 90 days : 180 flight time total : 15000 flight time type : 1500 |
ASRS Report | 124355 |
Person 2 | |
Affiliation | company : air carrier |
Function | flight crew : first officer |
Qualification | pilot : atp |
Events | |
Anomaly | other anomaly other |
Independent Detector | other flight crewa |
Resolutory Action | none taken : unable |
Consequence | Other |
Supplementary | |
Primary Problem | Flight Crew Human Performance |
Air Traffic Incident | other |
Narrative:
Los angeles is using a nonstandard approach procedure to 'pack a lot more airplanes in during visual mode'. In doing so, air safety is being compromised. The procedure goes like this: on the civet profile descent procedure, somewhere about arnes, the controller will ask, 'air carrier X, do you see a widebody transport at 12 O'clock? If the pilot responds yes, the controller says, 'air carrier X follow that airplane, you're cleared for a visual approach to 25R after fueler.' the nonstandard part of such a clearance is the pilot is given the responsibility for spacing without having a visual approach clearance. The pilot is not cleared for the visual approach until after crossing fueler, a fix 10-20 mi ahead. Even maintaining visual separation prior to an approach clearance might not be so bad, except, in this case, the pilot is still also responsible for the civet profile descent procedure, which still includes: 1) a hard crossing restriction at arnes, 2) a hard speed restriction at arnes, 3) a hard crossing restriction at suzzy, and 4) a hard crossing restriction at fueler. If you have ever executed the civet profile procedure, I'm sure you will agree it is the most complex and the most difficult profile descent procedure in the world. Therefore, the civet profile requires the full attention of the full crew. And, if on top of the civet profile workload, a crew adds the workload of maintaining visual separation with another aircraft, in the smoggy environment of los angeles, the workload becomes unacceptably high during the most critical phase of flight.
Original NASA ASRS Text
Title: REPORTER COMPLAINS ABOUT THE WAY VISUAL APCHES ARE BEING APPLIED AT LAX.
Narrative: LOS ANGELES IS USING A NONSTANDARD APCH PROC TO 'PACK A LOT MORE AIRPLANES IN DURING VISUAL MODE'. IN DOING SO, AIR SAFETY IS BEING COMPROMISED. THE PROC GOES LIKE THIS: ON THE CIVET PROFILE DESCENT PROC, SOMEWHERE ABOUT ARNES, THE CTLR WILL ASK, 'ACR X, DO YOU SEE A WDB AT 12 O'CLOCK? IF THE PLT RESPONDS YES, THE CTLR SAYS, 'ACR X FOLLOW THAT AIRPLANE, YOU'RE CLRED FOR A VISUAL APCH TO 25R AFTER FUELER.' THE NONSTANDARD PART OF SUCH A CLRNC IS THE PLT IS GIVEN THE RESPONSIBILITY FOR SPACING WITHOUT HAVING A VISUAL APCH CLRNC. THE PLT IS NOT CLRED FOR THE VISUAL APCH UNTIL AFTER XING FUELER, A FIX 10-20 MI AHEAD. EVEN MAINTAINING VISUAL SEPARATION PRIOR TO AN APCH CLRNC MIGHT NOT BE SO BAD, EXCEPT, IN THIS CASE, THE PLT IS STILL ALSO RESPONSIBLE FOR THE CIVET PROFILE DSCNT PROC, WHICH STILL INCLUDES: 1) A HARD XING RESTRICTION AT ARNES, 2) A HARD SPEED RESTRICTION AT ARNES, 3) A HARD XING RESTRICTION AT SUZZY, AND 4) A HARD XING RESTRICTION AT FUELER. IF YOU HAVE EVER EXECUTED THE CIVET PROFILE PROC, I'M SURE YOU WILL AGREE IT IS THE MOST COMPLEX AND THE MOST DIFFICULT PROFILE DSCNT PROC IN THE WORLD. THEREFORE, THE CIVET PROFILE REQUIRES THE FULL ATTN OF THE FULL CREW. AND, IF ON TOP OF THE CIVET PROFILE WORKLOAD, A CREW ADDS THE WORKLOAD OF MAINTAINING VISUAL SEPARATION WITH ANOTHER ACFT, IN THE SMOGGY ENVIRONMENT OF LOS ANGELES, THE WORKLOAD BECOMES UNACCEPTABLY HIGH DURING THE MOST CRITICAL PHASE OF FLT.
Data retrieved from NASA's ASRS site as of August 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.