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A fatigued corporate jet flight crew deviated from course as a result of FMS autoplt error. The track deviation placed the aircraft in close proximity to albanian airspace. Flight crew detected deviation prior to ATC intervention.
| Attributes | |
| ACN | 302512 |
| Time | |
| Date | 199504 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : krk |
| State Reference | FO |
| Altitude | msl bound lower : 43000 msl bound upper : 43000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : lggg |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute airway : lggg |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 5000 flight time type : 2000 |
| ASRS Report | 302512 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
In cruise over kerkira VOR, autoplt/flight director/FMS malfunctioned and failed to make automatic leg change and track desired course. Situation went unnoticed for 1 1/2-2 mins. Controller advised us that we were off course shortly after we had started course correction. Our deviation brought us within 2 mi of albanian airspace. No traffic conflict was noted or mentioned by athens control. The situation occurred near the end of our second 14 hour duty day during a ferry flight from singapore to the united states. Fatigue, time zone changes, and too much trust in our avionics were factors leading to this error in navigation.
Original NASA ASRS Text
Title: A FATIGUED CORPORATE JET FLC DEVIATED FROM COURSE AS A RESULT OF FMS AUTOPLT ERROR. THE TRACK DEV PLACED THE ACFT IN CLOSE PROX TO ALBANIAN AIRSPACE. FLC DETECTED DEV PRIOR TO ATC INTERVENTION.
Narrative: IN CRUISE OVER KERKIRA VOR, AUTOPLT/FLT DIRECTOR/FMS MALFUNCTIONED AND FAILED TO MAKE AUTO LEG CHANGE AND TRACK DESIRED COURSE. SIT WENT UNNOTICED FOR 1 1/2-2 MINS. CTLR ADVISED US THAT WE WERE OFF COURSE SHORTLY AFTER WE HAD STARTED COURSE CORRECTION. OUR DEV BROUGHT US WITHIN 2 MI OF ALBANIAN AIRSPACE. NO TFC CONFLICT WAS NOTED OR MENTIONED BY ATHENS CTL. THE SIT OCCURRED NEAR THE END OF OUR SECOND 14 HR DUTY DAY DURING A FERRY FLT FROM SINGAPORE TO THE UNITED STATES. FATIGUE, TIME ZONE CHANGES, AND TOO MUCH TRUST IN OUR AVIONICS WERE FACTORS LEADING TO THIS ERROR IN NAV.
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.