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An unclr clearance and a late crossing restr clearance lead to a track deviation on the fuzzy five arrival to las, nv.
| Attributes | |
| ACN | 562790 |
| Time | |
| Date | 200210 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | navaid : bld.vortac |
| State Reference | NV |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other other vortac |
| Flight Phase | descent : approach |
| Route In Use | arrival star : fuzzy 5 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 80 flight time total : 8800 flight time type : 1300 |
| ASRS Report | 562790 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | controller : issued new clearance |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
En route to las from oak (about 200 NM out) we were given direct fuzzy. We were in a 200-model B737 and could not accept this direct clearance. We were then given direct czq then bld. Our flight plan showed the fuzzy five arrival, but this seemed different. However J110 from czq to bld crosses over fuzzy, though the STAR doesn't really show this with clarity. We were given a tight descent to cross fuzzy at 10 DME 250 KTS which was a surprise as we were not expecting it. With a quick descent and clearance to keep our speed up, we just made fuzzy at 10 DME but flying the 200 model (outdated navigation and no autothrottles, etc) we were busy and missed the 100 degree heading and stayed on the 269 degree radial from our assumed clearance 200 NM back. We were then questioned why we were off course. Looking at the STAR we saw our mistake, turned right to intercept the 260 degrees bld. My captain (PNF) told them we were on course as we made our turn and the controller angrily replied, 'no you're not!' we were given a heading to intercept and handed off to approach. We landed without further problems. Part of the problem is the 200 model which we rarely fly anymore can be quite consuming when you throw this clearance confusion into it. I believe that had we clarified the original clearance after direct fuzzy to clovis and bld with the fuzzy five arrival, we would have been more on top of our game. I now know the clearance we got implied the fuzzy arrival as it was on our flight plan and will clarify next time so no more errors are made.
Original NASA ASRS Text
Title: AN UNCLR CLRNC AND A LATE XING RESTR CLRNC LEAD TO A TRACK DEV ON THE FUZZY FIVE ARR TO LAS, NV.
Narrative: ENRTE TO LAS FROM OAK (ABOUT 200 NM OUT) WE WERE GIVEN DIRECT FUZZY. WE WERE IN A 200-MODEL B737 AND COULD NOT ACCEPT THIS DIRECT CLRNC. WE WERE THEN GIVEN DIRECT CZQ THEN BLD. OUR FLT PLAN SHOWED THE FUZZY FIVE ARR, BUT THIS SEEMED DIFFERENT. HOWEVER J110 FROM CZQ TO BLD CROSSES OVER FUZZY, THOUGH THE STAR DOESN'T REALLY SHOW THIS WITH CLARITY. WE WERE GIVEN A TIGHT DSCNT TO CROSS FUZZY AT 10 DME 250 KTS WHICH WAS A SURPRISE AS WE WERE NOT EXPECTING IT. WITH A QUICK DSCNT AND CLRNC TO KEEP OUR SPD UP, WE JUST MADE FUZZY AT 10 DME BUT FLYING THE 200 MODEL (OUTDATED NAV AND NO AUTOTHROTTLES, ETC) WE WERE BUSY AND MISSED THE 100 DEG HDG AND STAYED ON THE 269 DEG RADIAL FROM OUR ASSUMED CLRNC 200 NM BACK. WE WERE THEN QUESTIONED WHY WE WERE OFF COURSE. LOOKING AT THE STAR WE SAW OUR MISTAKE, TURNED R TO INTERCEPT THE 260 DEGS BLD. MY CAPT (PNF) TOLD THEM WE WERE ON COURSE AS WE MADE OUR TURN AND THE CTLR ANGRILY REPLIED, 'NO YOU'RE NOT!' WE WERE GIVEN A HEADING TO INTERCEPT AND HANDED OFF TO APCH. WE LANDED WITHOUT FURTHER PROBS. PART OF THE PROB IS THE 200 MODEL WHICH WE RARELY FLY ANYMORE CAN BE QUITE CONSUMING WHEN YOU THROW THIS CLRNC CONFUSION INTO IT. I BELIEVE THAT HAD WE CLARIFIED THE ORIGINAL CLRNC AFTER DIRECT FUZZY TO CLOVIS AND BLD WITH THE FUZZY FIVE ARR, WE WOULD HAVE BEEN MORE ON TOP OF OUR GAME. I NOW KNOW THE CLRNC WE GOT IMPLIED THE FUZZY ARR AS IT WAS ON OUR FLT PLAN AND WILL CLARIFY NEXT TIME SO NO MORE ERRORS ARE MADE.
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.