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B757 first officer detected a slight FMC position error taking runway 10 at tist for departure and elected to continue the takeoff in VMC. A GPWS terrain warning is generated just after rotation; but the departure path is visually clear.
| Attributes | |
| ACN | 1318564 |
| Time | |
| Date | 201512 |
| Local Time Of Day | 1201-1800 |
| Place | |
| Locale Reference | TIST.Airport |
| State Reference | VI |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb Taxi |
| Flight Plan | IFR |
| Component | |
| Aircraft Component | FMS/FMC |
| Person 1 | |
| Function | First Officer Pilot Flying |
| Qualification | Flight Crew Air Transport Pilot (ATP) |
| Events | |
| Anomaly | Aircraft Equipment Problem Less Severe |
Narrative:
Non pegasus B757; map showed slight displacement at tist runway 10 hold short; but quick position reference (Q10) was not available in the database. On takeoff in day VMC with unrestricted visibility; GPWS alerted due to map shift. All terrain was in sight at all times. I increased rate of climb slightly but did not fully accomplish escape maneuver. If memory is available; quick position reference data should be available for all regular destination airports.
Original NASA ASRS Text
Title: B757 First Officer detected a slight FMC position error taking Runway 10 at TIST for departure and elected to continue the takeoff in VMC. A GPWS terrain warning is generated just after rotation; but the departure path is visually clear.
Narrative: Non Pegasus B757; map showed slight displacement at TIST Runway 10 Hold Short; but quick position reference (Q10) was not available in the database. On takeoff in Day VMC with unrestricted visibility; GPWS alerted due to map shift. All terrain was in sight at all times. I increased rate of climb slightly but did not fully accomplish escape maneuver. If memory is available; quick position reference data should be available for all regular destination airports.
Data retrieved from NASA's ASRS site 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.