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A B737 airline flight crew got off course performing a STAR. The aircraft paralleled the intended course and the radar controller had to adjust the spacing on several aircraft to accommodate this error.
| Attributes | |
| ACN | 429646 |
| Time | |
| Date | 199902 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : dfw.vortac |
| State Reference | TX |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude ground : pushback |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 20000 flight time type : 16000 |
| ASRS Report | 429646 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 7800 flight time type : 650 |
| ASRS Report | 429226 |
| Events | |
| Anomaly | non adherence : clearance non adherence : far non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued alert flight crew : returned to intended course |
| Consequence | Other |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Using RNAV cleared direct to kagle 20+ mi west of bowie VOR, bowie 4 arrival dallas. Selected kagle in RNAV, updated it (RNAV). RNAV missed kagle east about 6 mi. Approach vectored us back to approach. RNAV paralleled approach (as best as we could determine). No malfunction warning was displayed. ATC said no problem, but caused him additional work. Supplemental information from acn 429226: that's why the PNF is required to back up the PF with raw data. My failure to notice the aircraft's failure to join the arrival was due to heavy communication volume with ATC and my attention outside looking for other traffic!
Original NASA ASRS Text
Title: A B737 AIRLINE FLC GOT OFF COURSE PERFORMING A STAR. THE ACFT PARALLELED THE INTENDED COURSE AND THE RADAR CTLR HAD TO ADJUST THE SPACING ON SEVERAL ACFT TO ACCOMMODATE THIS ERROR.
Narrative: USING RNAV CLRED DIRECT TO KAGLE 20+ MI W OF BOWIE VOR, BOWIE 4 ARR DALLAS. SELECTED KAGLE IN RNAV, UPDATED IT (RNAV). RNAV MISSED KAGLE E ABOUT 6 MI. APCH VECTORED US BACK TO APCH. RNAV PARALLELED APCH (AS BEST AS WE COULD DETERMINE). NO MALFUNCTION WARNING WAS DISPLAYED. ATC SAID NO PROB, BUT CAUSED HIM ADDITIONAL WORK. SUPPLEMENTAL INFO FROM ACN 429226: THAT'S WHY THE PNF IS REQUIRED TO BACK UP THE PF WITH RAW DATA. MY FAILURE TO NOTICE THE ACFT'S FAILURE TO JOIN THE ARR WAS DUE TO HVY COM VOLUME WITH ATC AND MY ATTN OUTSIDE LOOKING FOR OTHER TFC!
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.