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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Widebody transport flight crew on arrival procedure descends prior to reaching the crossing restr due to not waiting for DME lock on.
| Attributes | |
| ACN | 357280 |
| Time | |
| Date | 199612 |
| Day | Tue |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : lax |
| State Reference | CA |
| Altitude | msl bound lower : 13000 msl bound upper : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other descent other |
| Route In Use | arrival other arrival star : star enroute airway : zla |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | controller radar : 4 flight time last 90 days : 180 flight time total : 10000 flight time type : 2000 |
| ASRS Report | 357280 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance non adherence : far |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Cleared on civet arrival, descended to 14000 ft. Crosschecked FMS with raw data to verify civet intersection, azimuth was good but I didn't wait for DME to lock on. FMS showed passing civet, so I started descent to next crossing restr and center advised we descended 4 mi early. I've had the FMS be off before at civet but only on azimuth. Next time I'll check DME also.
Original NASA ASRS Text
Title: WDB FLC ON ARR PROC DSNDS PRIOR TO REACHING THE XING RESTR DUE TO NOT WAITING FOR DME LOCK ON.
Narrative: CLRED ON CIVET ARR, DSNDED TO 14000 FT. XCHKED FMS WITH RAW DATA TO VERIFY CIVET INTXN, AZIMUTH WAS GOOD BUT I DIDN'T WAIT FOR DME TO LOCK ON. FMS SHOWED PASSING CIVET, SO I STARTED DSCNT TO NEXT XING RESTR AND CTR ADVISED WE DSNDED 4 MI EARLY. I'VE HAD THE FMS BE OFF BEFORE AT CIVET BUT ONLY ON AZIMUTH. NEXT TIME I'LL CHK DME ALSO.
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.