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A cpr jet flight crew miscalculates their rate of descent and fail to make an altitude crossing restr 60 mi east of sna, ca.
| Attributes | |
| ACN | 485560 |
| Time | |
| Date | 200009 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : sna.airport |
| State Reference | CA |
| Altitude | msl bound lower : 11000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zla.artcc |
| Operator | general aviation : corporate |
| Make Model Name | Light Transport, Low Wing, 2 Turbojet Eng |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : ns |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : corporate |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time total : 13000 |
| ASRS Report | 485560 |
| Person 2 | |
| Affiliation | company : corporate |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Events | |
| Anomaly | altitude deviation : undershoot altitude deviation : crossing restriction not met non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory none taken : insufficient time |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On arrival route into santa ana (sna) we were given a crossing restr. We set up the FMS and used the VNAV. During the descent the controller asked if we were going to make the crossing restr. We said we could make it. Later in the descent we saw that we could not meet the crossing restr using the FMS and autoplt and switched the autoplt off and increased our rate of descent. We missed our crossing restr by about 1/2 mi. The controller did not say anything and apparently there was not any traffic conflict. We feel this situation resulted from not setting up the FMS properly and monitoring it.
Original NASA ASRS Text
Title: A CPR JET FLC MISCALCULATES THEIR RATE OF DSCNT AND FAIL TO MAKE AN ALT XING RESTR 60 MI E OF SNA, CA.
Narrative: ON ARR RTE INTO SANTA ANA (SNA) WE WERE GIVEN A XING RESTR. WE SET UP THE FMS AND USED THE VNAV. DURING THE DSCNT THE CTLR ASKED IF WE WERE GOING TO MAKE THE XING RESTR. WE SAID WE COULD MAKE IT. LATER IN THE DSCNT WE SAW THAT WE COULD NOT MEET THE XING RESTR USING THE FMS AND AUTOPLT AND SWITCHED THE AUTOPLT OFF AND INCREASED OUR RATE OF DSCNT. WE MISSED OUR XING RESTR BY ABOUT 1/2 MI. THE CTLR DID NOT SAY ANYTHING AND APPARENTLY THERE WAS NOT ANY TFC CONFLICT. WE FEEL THIS SIT RESULTED FROM NOT SETTING UP THE FMS PROPERLY AND MONITORING IT.
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.