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ZDC controller recognizes too late that the correct altitude clearance has not been issued, attempts to resolve conflict, but operational error occurs.
| Attributes | |
| ACN | 523544 |
| Time | |
| Date | 200108 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : ekn.vortac |
| State Reference | WV |
| Altitude | msl single value : 23000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 135 |
| Navigation In Use | other |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zdc.artcc |
| Operator | general aviation : corporate |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | other |
| Flight Phase | climbout : intermediate altitude landing : roll |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position |
| Qualification | controller : radar |
| Experience | controller radar : 10 |
| ASRS Report | 523544 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other controllera other controllerb |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 18000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #2 departing, given climb to FL230. R-side advised of altitude cap restr. R-side enters assigned altitude of FL220 but does not issue it. Aircraft #1 opposite direction at FL230. When aircraft #2 is out of FL225 for FL230, mistake is recognized and action taken. Clrncs were given 3 times with no response. I feel this could have been avoided if the clearance to stop at FL220 was issued in the first place. It also could have been avoided if the clrncs had been taken in a timely manner. I feel frequency congestion and bad coverage also had a hand in this error.
Original NASA ASRS Text
Title: ZDC CTLR RECOGNIZES TOO LATE THAT THE CORRECT ALT CLRNC HAS NOT BEEN ISSUED, ATTEMPTS TO RESOLVE CONFLICT, BUT OPERROR OCCURS.
Narrative: ACFT #2 DEPARTING, GIVEN CLB TO FL230. R-SIDE ADVISED OF ALT CAP RESTR. R-SIDE ENTERS ASSIGNED ALT OF FL220 BUT DOES NOT ISSUE IT. ACFT #1 OPPOSITE DIRECTION AT FL230. WHEN ACFT #2 IS OUT OF FL225 FOR FL230, MISTAKE IS RECOGNIZED AND ACTION TAKEN. CLRNCS WERE GIVEN 3 TIMES WITH NO RESPONSE. I FEEL THIS COULD HAVE BEEN AVOIDED IF THE CLRNC TO STOP AT FL220 WAS ISSUED IN THE FIRST PLACE. IT ALSO COULD HAVE BEEN AVOIDED IF THE CLRNCS HAD BEEN TAKEN IN A TIMELY MANNER. I FEEL FREQ CONGESTION AND BAD COVERAGE ALSO HAD A HAND IN THIS ERROR.
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.