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B737 crew did not notice until notified by chief pilot that they had flown 4 legs with expired LNAV data.
| Attributes | |
| ACN | 505960 |
| Time | |
| Date | 200103 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : mci.airport |
| State Reference | MO |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Flight Phase | ground : parked |
| 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 : 27000 flight time type : 20800 |
| ASRS Report | 505960 |
| Events | |
| Anomaly | aircraft equipment problem : less severe |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Supplementary | |
| Problem Areas | Aircraft Company Flight Crew Human Performance |
| Primary Problem | Ambiguous |
Narrative:
I received a call from my chief pilot on mar/tue/01 at XA00. He informed me that the LNAV database on my aircraft on mar/thu/01 had expired on mar/wed/01. I was surprised because at our last destination airport, we were met by maintenance. My first officer and I looked at the dates again and still 'saw' mar/thu/01. Now looking back, what was displayed was feb/thu/01 mar/wed/01. The database had not been updated before mar/thu/01. We flew 4 legs on mar/thu/01.
Original NASA ASRS Text
Title: B737 CREW DID NOT NOTICE UNTIL NOTIFIED BY CHIEF PLT THAT THEY HAD FLOWN 4 LEGS WITH EXPIRED LNAV DATA.
Narrative: I RECEIVED A CALL FROM MY CHIEF PLT ON MAR/TUE/01 AT XA00. HE INFORMED ME THAT THE LNAV DATABASE ON MY ACFT ON MAR/THU/01 HAD EXPIRED ON MAR/WED/01. I WAS SURPRISED BECAUSE AT OUR LAST DEST ARPT, WE WERE MET BY MAINT. MY FO AND I LOOKED AT THE DATES AGAIN AND STILL 'SAW' MAR/THU/01. NOW LOOKING BACK, WHAT WAS DISPLAYED WAS FEB/THU/01 MAR/WED/01. THE DATABASE HAD NOT BEEN UPDATED BEFORE MAR/THU/01. WE FLEW 4 LEGS ON MAR/THU/01.
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.