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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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A CL65 flight crew finds themselves off course during a STAR arrival procedure. The aircraft had experienced a power surge with associated EFIS instruments flashing off and back on. When ATC calls them as to being off course, they find that the FMS had dropped 3 waypoints and they were heading for #4, tigrr.
| Attributes | |
| ACN | 393407 |
| Time | |
| Date | 199801 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : air |
| State Reference | OH |
| Altitude | msl bound lower : 28000 msl bound upper : 28000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid |
| Operator | common carrier : air carrier |
| Make Model Name | Challenger CL604 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Experience | flight time last 90 days : 70 flight time total : 2800 flight time type : 200 |
| ASRS Report | 393407 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
While level at FL280 I received ATIS for cvg. After entering the landing runway into the FMS, the FMS automatically loaded the STAR into the route. I verified the route and executed the modification. About 5 mins later we got an electrical surge in the avionics system and all the tubes (6 EFIS tubes) blinked off then back on. A few mins later we arrived at bellaire VOR and the aircraft turned to the next fix which was tigrr. The correct fix should have been bowrr then orlee and hedee. It seems that during the electrical surge 3 waypoints were dropped from the FMS. About 20 mi after passing bellaire ATC notified us of our deviation and cleared us to hedee where we continued the flight.
Original NASA ASRS Text
Title: A CL65 FLC FINDS THEMSELVES OFF COURSE DURING A STAR ARR PROC. THE ACFT HAD EXPERIENCED A PWR SURGE WITH ASSOCIATED EFIS INSTS FLASHING OFF AND BACK ON. WHEN ATC CALLS THEM AS TO BEING OFF COURSE, THEY FIND THAT THE FMS HAD DROPPED 3 WAYPOINTS AND THEY WERE HEADING FOR #4, TIGRR.
Narrative: WHILE LEVEL AT FL280 I RECEIVED ATIS FOR CVG. AFTER ENTERING THE LNDG RWY INTO THE FMS, THE FMS AUTOMATICALLY LOADED THE STAR INTO THE RTE. I VERIFIED THE RTE AND EXECUTED THE MODIFICATION. ABOUT 5 MINS LATER WE GOT AN ELECTRICAL SURGE IN THE AVIONICS SYS AND ALL THE TUBES (6 EFIS TUBES) BLINKED OFF THEN BACK ON. A FEW MINS LATER WE ARRIVED AT BELLAIRE VOR AND THE ACFT TURNED TO THE NEXT FIX WHICH WAS TIGRR. THE CORRECT FIX SHOULD HAVE BEEN BOWRR THEN ORLEE AND HEDEE. IT SEEMS THAT DURING THE ELECTRICAL SURGE 3 WAYPOINTS WERE DROPPED FROM THE FMS. ABOUT 20 MI AFTER PASSING BELLAIRE ATC NOTIFIED US OF OUR DEV AND CLRED US TO HEDEE WHERE WE CONTINUED THE FLT.
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.