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ZID controller experienced operational error at FL260 when he or she failed to recognize wrong altitude assignment.
| Attributes | |
| ACN | 706915 |
| Time | |
| Date | 200608 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : tvt.vor |
| State Reference | OH |
| Altitude | msl single value : 26000 |
| Environment | |
| Flight Conditions | VMC |
| Weather Elements | Turbulence |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc tower : san.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Regional Jet CL65 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 11 controller radar : 12 controller time certified in position2 : 3 |
| ASRS Report | 706915 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 29400 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Issued a crossing to aircraft #1 of 40 mi south of tvt at FL270. Aircraft #2 was issued FL260. When aircraft #1 read back clearance '4 mi south of tvt' was stated. When I reissued clearance for clarification I said '40 mi south at FL240.' I did not catch my error.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT FL260 WHEN HE OR SHE FAILED TO RECOGNIZE WRONG ALT ASSIGNMENT.
Narrative: ISSUED A XING TO ACFT #1 OF 40 MI S OF TVT AT FL270. ACFT #2 WAS ISSUED FL260. WHEN ACFT #1 READ BACK CLRNC '4 MI S OF TVT' WAS STATED. WHEN I REISSUED CLRNC FOR CLARIFICATION I SAID '40 MI S AT FL240.' I DID NOT CATCH MY ERROR.
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.