 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Flight crew of a fokker 100, FK10, failed to make STAR crossing altitude due misprogramming the FMC and not sufficiently monitoring rate of descent and altitude in order to take over aircraft manually in time to assure meeting clearance.
| Attributes | |
| ACN | 379290 |
| Time | |
| Date | 199709 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : ffu |
| State Reference | UT |
| Altitude | msl bound lower : 19000 msl bound upper : 19300 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zlc |
| Operator | common carrier : air carrier |
| Make Model Name | Fokker 100 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent other |
| Route In Use | arrival other arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| ASRS Report | 379290 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
En route to slc on the spane 2 arrival, we were cleared to descend and cross the spane intersection at FL190. The PNF dialed in FL190 and a properly programmed profile descent was initiated with the autoplt engaged. Approximately 8 mi from spane, it was concluded that the FMC computed descent rate was not going to be sufficient to reach spane by FL190. The PF responded by dropping down a level in automation. While leaving the autoplt on, level change was selected on the fmp and the speed brake was extended. When the aircraft crossed spane, the aircraft was in altitude capture mode approximately 200-300 ft above assigned altitude.
Original NASA ASRS Text
Title: FLC OF A FOKKER 100, FK10, FAILED TO MAKE STAR XING ALT DUE MISPROGRAMMING THE FMC AND NOT SUFFICIENTLY MONITORING RATE OF DSCNT AND ALT IN ORDER TO TAKE OVER ACFT MANUALLY IN TIME TO ASSURE MEETING CLRNC.
Narrative: ENRTE TO SLC ON THE SPANE 2 ARR, WE WERE CLRED TO DSND AND CROSS THE SPANE INTXN AT FL190. THE PNF DIALED IN FL190 AND A PROPERLY PROGRAMMED PROFILE DSCNT WAS INITIATED WITH THE AUTOPLT ENGAGED. APPROX 8 MI FROM SPANE, IT WAS CONCLUDED THAT THE FMC COMPUTED DSCNT RATE WAS NOT GOING TO BE SUFFICIENT TO REACH SPANE BY FL190. THE PF RESPONDED BY DROPPING DOWN A LEVEL IN AUTOMATION. WHILE LEAVING THE AUTOPLT ON, LEVEL CHANGE WAS SELECTED ON THE FMP AND THE SPD BRAKE WAS EXTENDED. WHEN THE ACFT CROSSED SPANE, THE ACFT WAS IN ALT CAPTURE MODE APPROX 200-300 FT ABOVE ASSIGNED ALT.
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.