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ZID controller experienced operational error at FL280 when failing to hear incorrect altitude assignment readback.
| Attributes | |
| ACN | 682851 |
| Time | |
| Date | 200512 |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : hvq.vortac |
| State Reference | WV |
| Altitude | msl single value : 28000 |
| Environment | |
| Weather Elements | Turbulence |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | other |
| Make Model Name | Learjet 35 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 16 |
| ASRS Report | 682851 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 9000 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
C550 was descending to FL290 for C21 at FL280. C550 company issued FL280 and wrong aircraft accepted clearance.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL280 WHEN FAILING TO HEAR INCORRECT ALT ASSIGNMENT READBACK.
Narrative: C550 WAS DSNDING TO FL290 FOR C21 AT FL280. C550 COMPANY ISSUED FL280 AND WRONG ACFT ACCEPTED CLRNC.
Data retrieved from NASA's ASRS site as of January 2009 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.