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B737 missed crossing altitude at orvll intersection due to misprogrammed FMC. Controller advised crew of error.
| Attributes | |
| ACN | 437889 |
| Time | |
| Date | 199905 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | intersection : orvll |
| State Reference | TX |
| Altitude | msl bound lower : 9000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | descent : approach |
| Route In Use | arrival star : dumpy 2 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : multi engine |
| Experience | flight time last 90 days : 210 flight time total : 5400 flight time type : 2700 |
| ASRS Report | 437889 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met non adherence : clearance non adherence : company policies |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued advisory flight crew : became reoriented |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent to dal on the dumpy 2 arrival, we were cleared to cross orvll at 9000 ft MSL. I entered 9000 ft into the FMC but inadvertently dropped the 9000 ft into the next fix (dumpy). I was manually flying just below the FMC derived flight path which put us high over orvll (estimated 12000 ft). The controller brought this to our attention and gave us a frequency change. I expedited the descent to 9000 ft. I put this altitude in the FMC before flight and we did not catch the error on descent.
Original NASA ASRS Text
Title: B737 MISSED XING ALT AT ORVLL INTXN DUE TO MISPROGRAMMED FMC. CTLR ADVISED CREW OF ERROR.
Narrative: ON DSCNT TO DAL ON THE DUMPY 2 ARR, WE WERE CLRED TO CROSS ORVLL AT 9000 FT MSL. I ENTERED 9000 FT INTO THE FMC BUT INADVERTENTLY DROPPED THE 9000 FT INTO THE NEXT FIX (DUMPY). I WAS MANUALLY FLYING JUST BELOW THE FMC DERIVED FLT PATH WHICH PUT US HIGH OVER ORVLL (ESTIMATED 12000 FT). THE CTLR BROUGHT THIS TO OUR ATTN AND GAVE US A FREQ CHANGE. I EXPEDITED THE DSCNT TO 9000 FT. I PUT THIS ALT IN THE FMC BEFORE FLT AND WE DID NOT CATCH THE ERROR ON DSCNT.
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.