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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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J31 aircraft answered descent clearance for another aircraft with similar call sign. Controller didn't catch the readback by wrong call sign aircraft. Controller intervened when seeing reporter commence descent.
| Attributes | |
| ACN | 357360 |
| Time | |
| Date | 199701 |
| Day | Mon |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : zla |
| State Reference | CA |
| Altitude | msl bound lower : 17000 msl bound upper : 17000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 32 |
| Operating Under FAR Part | Part 135 |
| Flight Phase | cruise other descent other |
| Route In Use | enroute airway : zla |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 140 flight time total : 2500 flight time type : 65 |
| ASRS Report | 357360 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude non adherence : clearance other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
Flying AB123 at 17000 ft, ATC clearance to descend to 13000 ft. Read back 'AB123, 13000 ft.' controller said nothing. A min later, atl asked altitude -- clearance was for AC123. Why did controller accept my readback? Working multiple frequencys is why.
Original NASA ASRS Text
Title: J31 ACFT ANSWERED DSCNT CLRNC FOR ANOTHER ACFT WITH SIMILAR CALL SIGN. CTLR DIDN'T CATCH THE READBACK BY WRONG CALL SIGN ACFT. CTLR INTERVENED WHEN SEEING RPTR COMMENCE DSCNT.
Narrative: FLYING AB123 AT 17000 FT, ATC CLRNC TO DSND TO 13000 FT. READ BACK 'AB123, 13000 FT.' CTLR SAID NOTHING. A MIN LATER, ATL ASKED ALT -- CLRNC WAS FOR AC123. WHY DID CTLR ACCEPT MY READBACK? WORKING MULTIPLE FREQS IS WHY.
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.