 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Potential navigation error averted when flight crew becomes aware of wrong coordinates entered into navigation system. Diversion to altitude airport for precautionary landing and reset of proper numbers in computer. Overwater operation considerations.
| Attributes | |
| ACN | 209632 |
| Time | |
| Date | 199205 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zrh |
| State Reference | FO |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : cvg |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | climbout : takeoff ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 12000 flight time type : 3000 |
| ASRS Report | 209632 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 6000 flight time type : 1500 |
| ASRS Report | 209764 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure other anomaly other other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
After takeoff it was discovered that the FMC present position was inaccurate to a degree which precluded extended overwater operation. We landed, realigned the IRU's and continued uneventfully to our destination. We suspect that we had entered the wrong present position coordinates, and have recommended to the company that enhanced procedures be put in place ensuring that errors of this nature be discovered prior to takeoff.
Original NASA ASRS Text
Title: POTENTIAL NAV ERROR AVERTED WHEN FLC BECOMES AWARE OF WRONG COORDINATES ENTERED INTO NAV SYS. DIVERSION TO ALT ARPT FOR PRECAUTIONARY LNDG AND RESET OF PROPER NUMBERS IN COMPUTER. OVERWATER OP CONSIDERATIONS.
Narrative: AFTER TKOF IT WAS DISCOVERED THAT THE FMC PRESENT POS WAS INACCURATE TO A DEG WHICH PRECLUDED EXTENDED OVERWATER OP. WE LANDED, REALIGNED THE IRU'S AND CONTINUED UNEVENTFULLY TO OUR DEST. WE SUSPECT THAT WE HAD ENTERED THE WRONG PRESENT POS COORDINATES, AND HAVE RECOMMENDED TO THE COMPANY THAT ENHANCED PROCS BE PUT IN PLACE ENSURING THAT ERRORS OF THIS NATURE BE DISCOVERED PRIOR TO TKOF.
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.