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B737 flight crew has out of date navigation database in the FMC. FMC is deferred until maintenance can update the system.
| Attributes | |
| ACN | 506310 |
| Time | |
| Date | 200103 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : msy.airport |
| State Reference | LA |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Flight Phase | ground : maintenance ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 506310 |
| Events | |
| Anomaly | aircraft equipment problem : less severe non adherence : published procedure non adherence : far other anomaly other |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
Narrative:
We originated aircraft in msy on mar/thu. The FMC navigation database was out of date. I called dispatch, conferred with duty control, and deferred the navigation database, MEL 34-36. We flew 1 leg to hou where the navigation database was updated and the MEL item cleared. Later I heard that many aircraft had out-of-date navigation data. Normally the new navigation data is loaded in the standby position and only has to be selected by the crew on the change date. I don't know where the ball was dropped, but perhaps the problem could have been headed off if the flight crews would advise maintenance of aircraft that have navigation data that is about to expire a few days ahead of the expiration date.
Original NASA ASRS Text
Title: B737 FLT CREW HAS OUT OF DATE NAV DATABASE IN THE FMC. FMC IS DEFERRED UNTIL MAINT CAN UPDATE THE SYS.
Narrative: WE ORIGINATED ACFT IN MSY ON MAR/THU. THE FMC NAV DATABASE WAS OUT OF DATE. I CALLED DISPATCH, CONFERRED WITH DUTY CTL, AND DEFERRED THE NAV DATABASE, MEL 34-36. WE FLEW 1 LEG TO HOU WHERE THE NAV DATABASE WAS UPDATED AND THE MEL ITEM CLRED. LATER I HEARD THAT MANY ACFT HAD OUT-OF-DATE NAV DATA. NORMALLY THE NEW NAV DATA IS LOADED IN THE STANDBY POS AND ONLY HAS TO BE SELECTED BY THE CREW ON THE CHANGE DATE. I DON'T KNOW WHERE THE BALL WAS DROPPED, BUT PERHAPS THE PROB COULD HAVE BEEN HEADED OFF IF THE FLT CREWS WOULD ADVISE MAINT OF ACFT THAT HAVE NAV DATA THAT IS ABOUT TO EXPIRE A FEW DAYS AHEAD OF THE EXPIRATION DATE.
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.