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ZDC handoff controller alerts oncoming radar controller of altitude overshoot and conflict between a descending B757 and an en route BE20.
| Attributes | |
| ACN | 587179 |
| Time | |
| Date | 200307 |
| Day | Thu |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : mumsy |
| State Reference | WV |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | IMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B757 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| ASRS Report | 587179 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other controllera |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 19200 vertical : 400 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft X issued descent clearance to cross 15 NM northwest of mrb VOR at 15000 ft. Pilot read back 15 NM northwest at 11000 ft. Due to noise and distrs with WX and deviations, I missed the bad readback. Immediately following, both myself and the d-side were giving relief briefings. The new r-side was concerned about the way a pilot requested to deviate around WX. While focusing on this situation, the d-side observed aircraft X descend below his assigned altitude. A climb was issued to aircraft X and a 40 degree turn was issued to aircraft Y.
Original NASA ASRS Text
Title: ZDC HDOF CTLR ALERTS ONCOMING RADAR CTLR OF ALT OVERSHOOT AND CONFLICT BTWN A DSNDING B757 AND AN ENRTE BE20.
Narrative: ACFT X ISSUED DSCNT CLRNC TO CROSS 15 NM NW OF MRB VOR AT 15000 FT. PLT READ BACK 15 NM NW AT 11000 FT. DUE TO NOISE AND DISTRS WITH WX AND DEVS, I MISSED THE BAD READBACK. IMMEDIATELY FOLLOWING, BOTH MYSELF AND THE D-SIDE WERE GIVING RELIEF BRIEFINGS. THE NEW R-SIDE WAS CONCERNED ABOUT THE WAY A PLT REQUESTED TO DEVIATE AROUND WX. WHILE FOCUSING ON THIS SIT, THE D-SIDE OBSERVED ACFT X DSND BELOW HIS ASSIGNED ALT. A CLB WAS ISSUED TO ACFT X AND A 40 DEG TURN WAS ISSUED TO ACFT Y.
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.