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Flight crew of small transport excursioned from assigned altitude when they accepted a similar sounding flight clearance.
| Attributes | |
| ACN | 139522 |
| Time | |
| Date | 199003 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : stl |
| State Reference | MO |
| Altitude | msl bound lower : 11000 msl bound upper : 11000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zkc |
| Operator | common carrier : air carrier |
| Make Model Name | Small Transport, Low Wing, 2 Turboprop Eng |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : instrument pilot : commercial pilot : cfi |
| Experience | flight time last 90 days : 220 flight time total : 2500 flight time type : 800 |
| ASRS Report | 139522 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : instrument pilot : atp pilot : commercial |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
There were 2 airplanes with the same airline and similar flight numbers being handled by the same controller. We took the other plane's climb clearance and read it back, so we started the climb. About 600' into the climb we reconfirmed the clearance and was told it was for the other plane. We descended back down with no further incident.
Original NASA ASRS Text
Title: FLT CREW OF SMT EXCURSIONED FROM ASSIGNED ALT WHEN THEY ACCEPTED A SIMILAR SOUNDING FLT CLRNC.
Narrative: THERE WERE 2 AIRPLANES WITH THE SAME AIRLINE AND SIMILAR FLT NUMBERS BEING HANDLED BY THE SAME CTLR. WE TOOK THE OTHER PLANE'S CLIMB CLRNC AND READ IT BACK, SO WE STARTED THE CLIMB. ABOUT 600' INTO THE CLIMB WE RECONFIRMED THE CLRNC AND WAS TOLD IT WAS FOR THE OTHER PLANE. WE DESCENDED BACK DOWN WITH NO FURTHER INCIDENT.
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.