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Heading track deviation results from flight crew technique navigation when wrong flight plan inserted into FMC.
| Attributes | |
| ACN | 201587 |
| Time | |
| Date | 199202 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : zob |
| State Reference | OH |
| Altitude | msl bound lower : 29000 msl bound upper : 29000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zob tower : mia |
| Operator | common carrier : air carrier |
| Make Model Name | Medium Large Transport, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 9000 flight time type : 150 |
| ASRS Report | 201587 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 90 flight time total : 4500 flight time type : 300 |
| ASRS Report | 201591 |
| Events | |
| Anomaly | non adherence : clearance non adherence : published procedure other spatial deviation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation other |
Narrative:
Route from msp to pit loaded into FMC's via company route. Data base was confirmed to be current Y feb-Y mar. Flown route deviated from actual filed flight plan prior to dtb at junction of J34 and J90. Contributing factors -- notice on release was misinterpreted as X feb not X mar for effective date of company route change. Pre departure clearance was not thoroughly checked against FMC to insure routing. Date of data base. ATC noted deviation of route and directed flight to turn south for vectors. A rechk by both pilots discovered variation in flight plans. Recommend in future: both pilots check release after CAT obtains release from operations. Both pilots confirm FMC flight route versus pre departure clearance routing (and pre departure clearance versus flight release). Delete out-of-date or OTS rtes from FMC data base until they're active.
Original NASA ASRS Text
Title: HDG TRACK DEV RESULTS FROM FLC TECHNIQUE NAV WHEN WRONG FLT PLAN INSERTED INTO FMC.
Narrative: RTE FROM MSP TO PIT LOADED INTO FMC'S VIA COMPANY RTE. DATA BASE WAS CONFIRMED TO BE CURRENT Y FEB-Y MAR. FLOWN RTE DEVIATED FROM ACTUAL FILED FLT PLAN PRIOR TO DTB AT JUNCTION OF J34 AND J90. CONTRIBUTING FACTORS -- NOTICE ON RELEASE WAS MISINTERPRETED AS X FEB NOT X MAR FOR EFFECTIVE DATE OF COMPANY RTE CHANGE. PDC WAS NOT THOROUGHLY CHKED AGAINST FMC TO INSURE ROUTING. DATE OF DATA BASE. ATC NOTED DEV OF RTE AND DIRECTED FLT TO TURN S FOR VECTORS. A RECHK BY BOTH PLTS DISCOVERED VARIATION IN FLT PLANS. RECOMMEND IN FUTURE: BOTH PLTS CHK RELEASE AFTER CAT OBTAINS RELEASE FROM OPS. BOTH PLTS CONFIRM FMC FLT RTE VERSUS PDC ROUTING (AND PDC VERSUS FLT RELEASE). DELETE OUT-OF-DATE OR OTS RTES FROM FMC DATA BASE UNTIL THEY'RE ACTIVE.
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.