 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
An LJ35 flight crew determined their FMS had failed when advised by ATC they were off course. No failure warnings were displayed.
| Attributes | |
| ACN | 876520 |
| Time | |
| Date | 201003 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | ZZZ.ARTCC |
| State Reference | US |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | Cruise |
| Route In Use | Direct |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | Pilot Not Flying Captain |
| Qualification | Flight Crew Multiengine Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument |
| Experience | Flight Crew Last 90 Days 200 Flight Crew Total 2200 Flight Crew Type 200 |
| Events | |
| Anomaly | Aircraft Equipment Problem Critical Deviation - Track / Heading All Types |
Narrative:
We were 500 miles from our destination when ATC informed us we were 20 miles off course. We quickly determined that our FMS had failed with with no flags or messages. We informed ATC of our situation and asked for a re-route along jet airways. We were then cleared via jet airways and continued the flight on green needles without incident.
Original NASA ASRS Text
Title: An LJ35 flight crew determined their FMS had failed when advised by ATC they were off course. No failure warnings were displayed.
Narrative: We were 500 miles from our destination when ATC informed us we were 20 miles off course. We quickly determined that our FMS had failed with with no flags or messages. We informed ATC of our situation and asked for a re-route along jet airways. We were then cleared via jet airways and continued the flight on green needles without incident.
Data retrieved from NASA's ASRS site as of April 2012 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.