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ARTCC controller delayed descent clearance for a STAR arrival resulting in the flight crew being unable to meet the published altitude crossing restr and a slight course error.
| Attributes | |
| ACN | 458326 |
| Time | |
| Date | 199912 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : ilax.ils |
| State Reference | CA |
| Altitude | msl bound lower : 19000 msl bound upper : 20000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B747-100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | ils localizer & glide slope : 25r other |
| Flight Phase | descent : vacating altitude |
| Route In Use | approach : instrument precision arrival star : civet 4. civet |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 5500 flight time type : 90 |
| ASRS Report | 458326 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : private pilot : multi engine pilot : instrument pilot : commercial pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 20000 flight time type : 800 |
| ASRS Report | 458276 |
| Events | |
| Anomaly | altitude deviation : undershoot non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : altimeter other flight crewa other flight crewb |
| Resolutory Action | controller : issued new clearance none taken : insufficient time |
| Consequence | Other |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | other |
Narrative:
Clearance for the civet 4 arrival (via published altitudes) was received late, therefore arrival over civet was higher than the published 140/170. Drag devices and descent techniques were employed to get back on profile. Relief was provided at arnes, clearing us at 10000 ft or above. No avoidance/conflict/corrective actions were necessary. Contributing factors included airspeed restrs and a lateral error in 2 of 3 INS's. This INS error caused a minor turn over civet, which provided further distraction from our descent profile.
Original NASA ASRS Text
Title: ARTCC CTLR DELAYED DSCNT CLRNC FOR A STAR ARR RESULTING IN THE FLC BEING UNABLE TO MEET THE PUBLISHED ALT XING RESTR AND A SLIGHT COURSE ERROR.
Narrative: CLRNC FOR THE CIVET 4 ARR (VIA PUBLISHED ALTS) WAS RECEIVED LATE, THEREFORE ARR OVER CIVET WAS HIGHER THAN THE PUBLISHED 140/170. DRAG DEVICES AND DSCNT TECHNIQUES WERE EMPLOYED TO GET BACK ON PROFILE. RELIEF WAS PROVIDED AT ARNES, CLRING US AT 10000 FT OR ABOVE. NO AVOIDANCE/CONFLICT/CORRECTIVE ACTIONS WERE NECESSARY. CONTRIBUTING FACTORS INCLUDED AIRSPD RESTRS AND A LATERAL ERROR IN 2 OF 3 INS'S. THIS INS ERROR CAUSED A MINOR TURN OVER CIVET, WHICH PROVIDED FURTHER DISTR FROM OUR DSCNT PROFILE.
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.