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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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Air carrier cleared direct to hmv. FMC deleted arrival waypoint as a result the aircraft deviated from clearance route.
| Attributes | |
| ACN | 351790 |
| Time | |
| Date | 199611 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : hmv |
| State Reference | TN |
| Altitude | msl bound lower : 31000 msl bound upper : 31000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : ztl |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : atp pilot : flight engineer pilot : instrument |
| Experience | flight time last 90 days : 195 flight time total : 10000 flight time type : 1500 |
| ASRS Report | 351790 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | non adherence : far non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
En route to hmv, aircraft cleared direct mhv by ZTL. FMS dumped arrival waypoint after being cleared direct. Center queried our route to clarify the situation. Deviation was minimal but confusing. FMS dependent pilots should verify rtes after every route change and execution.
Original NASA ASRS Text
Title: ACR CLRED DIRECT TO HMV. FMC DELETED ARR WAYPOINT AS A RESULT THE ACFT DEVIATED FROM CLRNC RTE.
Narrative: ENRTE TO HMV, ACFT CLRED DIRECT MHV BY ZTL. FMS DUMPED ARR WAYPOINT AFTER BEING CLRED DIRECT. CTR QUERIED OUR RTE TO CLARIFY THE SIT. DEV WAS MINIMAL BUT CONFUSING. FMS DEPENDENT PLTS SHOULD VERIFY RTES AFTER EVERY RTE CHANGE AND EXECUTION.
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.