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A B767 flight crew fails to make an altitude crossing restr at mitts intersection after their arrival and runway change altered their cockpit setup and planning during an expected civet arrival at lax, ca.
| Attributes | |
| ACN | 596539 |
| Time | |
| Date | 200310 |
| Day | Tue |
| Place | |
| Locale Reference | intersection : mitts |
| State Reference | CA |
| Altitude | msl bound lower : 17000 msl bound upper : 17800 |
| Environment | |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B767 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | arrival star : mitts |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 596539 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : published procedure non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance flight crew : became reoriented flight crew : returned to intended or assigned course other |
| Supplementary | |
| Problem Areas | Environmental Factor Flight Crew Human Performance ATC Human Performance Airspace Structure |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Pilot Deviation |
Narrative:
In descent to FL190 on civet 4 approximately 4 mi from civet. Slowing to 250 KTS per ATC assignment, cleared to descend via mitts arrival. This was a change from initial assignment of civet 4. I had mitts in route #2 and selected and executed same. This was an extremely late change and first officer was late continuing descent due aircraft slowing. We missed the 17000 ft or below by about 800 ft. I advised approach that we were going to be late at civet. Controller only responded with 'ok, at or below.' this was confusing to me as I was concerned regarding the 17000 ft or below as opposed to the 14000 ft or above portion of the crossing clearance. The first officer said that his HSI showed the mitts as a blue dashed line. I looked, and his HSI did indeed show mitts as not active. My HSI showed the mitts as active and magenta. This caused further confusion. The first officer thought we were going to runway 25R instead of runway 24R and retuned the localizer to runway 25R. I retuned to runway 24R, and we continued approach per normal procedure. This was a very late change and was exacerbated by several additional items.
Original NASA ASRS Text
Title: A B767 FLT CREW FAILS TO MAKE AN ALT XING RESTR AT MITTS INTXN AFTER THEIR ARR AND RWY CHANGE ALTERED THEIR COCKPIT SETUP AND PLANNING DURING AN EXPECTED CIVET ARR AT LAX, CA.
Narrative: IN DSCNT TO FL190 ON CIVET 4 APPROX 4 MI FROM CIVET. SLOWING TO 250 KTS PER ATC ASSIGNMENT, CLRED TO DSND VIA MITTS ARR. THIS WAS A CHANGE FROM INITIAL ASSIGNMENT OF CIVET 4. I HAD MITTS IN RTE #2 AND SELECTED AND EXECUTED SAME. THIS WAS AN EXTREMELY LATE CHANGE AND FO WAS LATE CONTINUING DSCNT DUE ACFT SLOWING. WE MISSED THE 17000 FT OR BELOW BY ABOUT 800 FT. I ADVISED APCH THAT WE WERE GOING TO BE LATE AT CIVET. CTLR ONLY RESPONDED WITH 'OK, AT OR BELOW.' THIS WAS CONFUSING TO ME AS I WAS CONCERNED REGARDING THE 17000 FT OR BELOW AS OPPOSED TO THE 14000 FT OR ABOVE PORTION OF THE XING CLRNC. THE FO SAID THAT HIS HSI SHOWED THE MITTS AS A BLUE DASHED LINE. I LOOKED, AND HIS HSI DID INDEED SHOW MITTS AS NOT ACTIVE. MY HSI SHOWED THE MITTS AS ACTIVE AND MAGENTA. THIS CAUSED FURTHER CONFUSION. THE FO THOUGHT WE WERE GOING TO RWY 25R INSTEAD OF RWY 24R AND RETUNED THE LOC TO RWY 25R. I RETUNED TO RWY 24R, AND WE CONTINUED APCH PER NORMAL PROC. THIS WAS A VERY LATE CHANGE AND WAS EXACERBATED BY SEVERAL ADDITIONAL ITEMS.
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.