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ZID controller questions his altitude assignment to an en route DC9 as he observes aircraft descend into another controller's airspace.
| Attributes | |
| ACN | 501047 |
| Time | |
| Date | 200102 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zid.artcc |
| Altitude | msl bound lower : 31700 msl bound upper : 33000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : enroute altitude change |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Experience | controller radar : 11 controller time certified in position1 : 1 |
| ASRS Report | 501047 |
| Person 2 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Events | |
| Anomaly | airspace violation : entry altitude deviation : overshoot non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance controller : issued advisory |
| Consequence | faa : reviewed incident with flight crew |
| Supplementary | |
| Problem Areas | ATC Human Performance Airspace Structure |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
Flight descended below assigned altitude of FL330. When questioned, pilot stated he was cleared to FL310 (not my airspace). Quickly instructed aircraft to climb to FL330 and coordinated with sector below me. Sector below asked me to issue FL290. I issued FL290 and handed aircraft off. This was either a missed readback on my behalf or pilot deviation. I did not report the incident. It is also possible (as much as I hate to admit) that I could have issued FL310 and typed FL330 into data block. I'm certified at both sectors, so it is possible that the altitudes could have been mixed up by me. The sector boundaries are the same. The high is FL240-FL310 and super high, where I was, at FL330-FL999.
Original NASA ASRS Text
Title: ZID CTLR QUESTIONS HIS ALT ASSIGNMENT TO AN ENRTE DC9 AS HE OBSERVES ACFT DSND INTO ANOTHER CTLR'S AIRSPACE.
Narrative: FLT DSNDED BELOW ASSIGNED ALT OF FL330. WHEN QUESTIONED, PLT STATED HE WAS CLRED TO FL310 (NOT MY AIRSPACE). QUICKLY INSTRUCTED ACFT TO CLB TO FL330 AND COORDINATED WITH SECTOR BELOW ME. SECTOR BELOW ASKED ME TO ISSUE FL290. I ISSUED FL290 AND HANDED ACFT OFF. THIS WAS EITHER A MISSED READBACK ON MY BEHALF OR PLTDEV. I DID NOT RPT THE INCIDENT. IT IS ALSO POSSIBLE (AS MUCH AS I HATE TO ADMIT) THAT I COULD HAVE ISSUED FL310 AND TYPED FL330 INTO DATA BLOCK. I'M CERTIFIED AT BOTH SECTORS, SO IT IS POSSIBLE THAT THE ALTS COULD HAVE BEEN MIXED UP BY ME. THE SECTOR BOUNDARIES ARE THE SAME. THE HIGH IS FL240-FL310 AND SUPER HIGH, WHERE I WAS, AT FL330-FL999.
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.