 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B737 flight crew operates an aircraft with an out of date navigation database. Maintenance updates database during the layover.
| Attributes | |
| ACN | 506320 |
| Time | |
| Date | 200103 |
| Day | Thu |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : boi.airport |
| State Reference | ID |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dawn |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-700 |
| Flight Phase | ground : maintenance ground : takeoff roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 130 flight time total : 23000 flight time type : 18000 |
| ASRS Report | 506320 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance other anomaly other |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
Narrative:
Flew aircraft VMC boi-slc-las. On arrival at gate in las, mechanic came to cockpit with navigation data. I believed the data was current because I did not observe the mechanic load any new data. However, I had to leave the cockpit for a few mins to talk to dispatch and duty control concerning a speed brake discrepancy that I wrote up. Several las mechanics came in and out of the cockpit while we were on the ground. I was forced to stand out of the cockpit while the mechanics checked out and locked out the #1 engine thrust reverser. No las mechanic advised me that the navigation data was out of date or that he had reloaded any navigation data. I did not observe anyone connect the navigation data loader. My first officer is very conservative and I believed he checked the data in boi and that it was current. I cannot 100% attest to this, however, I trust all my first officer's to check this prior to each originating flight. I have never had an occurrence where maintenance let any aircraft navigation data go out of date in the past, nor have I ever had an first officer point out to me that the navigation data was out of date.
Original NASA ASRS Text
Title: B737 FLT CREW OPERATES AN ACFT WITH AN OUT OF DATE NAV DATABASE. MAINT UPDATES DATABASE DURING THE LAYOVER.
Narrative: FLEW ACFT VMC BOI-SLC-LAS. ON ARR AT GATE IN LAS, MECH CAME TO COCKPIT WITH NAV DATA. I BELIEVED THE DATA WAS CURRENT BECAUSE I DID NOT OBSERVE THE MECH LOAD ANY NEW DATA. HOWEVER, I HAD TO LEAVE THE COCKPIT FOR A FEW MINS TO TALK TO DISPATCH AND DUTY CTL CONCERNING A SPD BRAKE DISCREPANCY THAT I WROTE UP. SEVERAL LAS MECHS CAME IN AND OUT OF THE COCKPIT WHILE WE WERE ON THE GND. I WAS FORCED TO STAND OUT OF THE COCKPIT WHILE THE MECHS CHKED OUT AND LOCKED OUT THE #1 ENG THRUST REVERSER. NO LAS MECH ADVISED ME THAT THE NAV DATA WAS OUT OF DATE OR THAT HE HAD RELOADED ANY NAV DATA. I DID NOT OBSERVE ANYONE CONNECT THE NAV DATA LOADER. MY FO IS VERY CONSERVATIVE AND I BELIEVED HE CHKED THE DATA IN BOI AND THAT IT WAS CURRENT. I CANNOT 100% ATTEST TO THIS, HOWEVER, I TRUST ALL MY FO'S TO CHK THIS PRIOR TO EACH ORIGINATING FLT. I HAVE NEVER HAD AN OCCURRENCE WHERE MAINT LET ANY ACFT NAV DATA GO OUT OF DATE IN THE PAST, NOR HAVE I EVER HAD AN FO POINT OUT TO ME THAT THE NAV DATA WAS OUT OF 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.