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An MD80S captain did not take into account a substantial tailwind as he descended and could not meet his crossing restr.
| Attributes | |
| ACN | 452150 |
| Time | |
| Date | 199910 |
| Day | Wed |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | intersection : somto |
| State Reference | PA |
| Altitude | msl bound lower : 12000 msl bound upper : 20000 |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Super 80 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude descent : approach |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 452150 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument pilot : multi engine |
| Events | |
| Anomaly | altitude deviation : crossing restriction not met inflight encounter other non adherence : far non adherence : company policies non adherence : clearance non adherence : published procedure |
| Independent Detector | other flight crewa other flight crewb |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance Weather |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While descending through FL200, ZDC gave us a clearance to cross the somto intersection at 13000 ft and then descend and maintain 12000 ft. We were about 21 mi from somto intersection when given the crossing clrncs. I did not take into consideration, prior to accepting the clearance, the tailwind, approximately 50-60 KTS, during the descent and crossed the somto intersection 1500 ft above the clearance crossing altitude of 13000 ft. I had the first officer inform the controller approximately 5 mi from the somto intersection that we will be high. There were no other aircraft in our vicinity when crossing the somto intersection. Used the TCASII display for reference.
Original NASA ASRS Text
Title: AN MD80S CAPT DID NOT TAKE INTO ACCOUNT A SUBSTANTIAL TAILWIND AS HE DSNDED AND COULD NOT MEET HIS XING RESTR.
Narrative: WHILE DSNDING THROUGH FL200, ZDC GAVE US A CLRNC TO CROSS THE SOMTO INTXN AT 13000 FT AND THEN DSND AND MAINTAIN 12000 FT. WE WERE ABOUT 21 MI FROM SOMTO INTXN WHEN GIVEN THE XING CLRNCS. I DID NOT TAKE INTO CONSIDERATION, PRIOR TO ACCEPTING THE CLRNC, THE TAILWIND, APPROX 50-60 KTS, DURING THE DSCNT AND CROSSED THE SOMTO INTXN 1500 FT ABOVE THE CLRNC XING ALT OF 13000 FT. I HAD THE FO INFORM THE CTLR APPROX 5 MI FROM THE SOMTO INTXN THAT WE WILL BE HIGH. THERE WERE NO OTHER ACFT IN OUR VICINITY WHEN XING THE SOMTO INTXN. USED THE TCASII DISPLAY FOR REF.
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.