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ZOB ARTCC controller restates incorrect altitude to pilot of a B190 climbing resulting in a loss of separation with a DH8A in level flight.
| Attributes | |
| ACN | 465553 |
| Time | |
| Date | 200003 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | navaid : buf.vortac |
| State Reference | NY |
| Altitude | agl single value : 0 msl single value : 16000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zny.artcc tower : zzz.tower |
| Operator | common carrier : air taxi |
| Make Model Name | Beech 1900 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zny.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Dash 8 Series 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 pilot : private |
| Experience | controller limited radar : 2 controller non radar : 1 controller radar : 14 controller supervisory : 8 |
| ASRS Report | 465553 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne critical non adherence : published procedure |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued new clearance |
| Miss Distance | horizontal : 18000 vertical : 500 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
B190 was issued a climb clearance to 15000 ft. The pilot stated he was requesting 17000 ft. I told the pilot that I had his request and when I restated the cleared altitude I mistakenly said 16000 ft (the altitude of the opposing traffic). Upon noticing the B190 go through 15000 ft, I questioned the altitude assignment and reissued 15000 ft. The pilot stated traffic in sight, so I issued a VFR climb clearance.
Original NASA ASRS Text
Title: ZOB ARTCC CTLR RESTATES INCORRECT ALT TO PLT OF A B190 CLBING RESULTING IN A LOSS OF SEPARATION WITH A DH8A IN LEVEL FLT.
Narrative: B190 WAS ISSUED A CLB CLRNC TO 15000 FT. THE PLT STATED HE WAS REQUESTING 17000 FT. I TOLD THE PLT THAT I HAD HIS REQUEST AND WHEN I RESTATED THE CLRED ALT I MISTAKENLY SAID 16000 FT (THE ALT OF THE OPPOSING TFC). UPON NOTICING THE B190 GO THROUGH 15000 FT, I QUESTIONED THE ALT ASSIGNMENT AND REISSUED 15000 FT. THE PLT STATED TFC IN SIGHT, SO I ISSUED A VFR CLB CLRNC.
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.