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Air carrier reply to wrong call sign. Controller didn't catch error at first, then couldn't contact large transport. Less than standard separation occurred.
| Attributes | |
| ACN | 182818 |
| Time | |
| Date | 199107 |
| Day | Sat |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : vcn |
| State Reference | NJ |
| Altitude | msl bound lower : 10000 msl bound upper : 10600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : cvg |
| Operator | other |
| Make Model Name | Military Transport |
| Flight Phase | descent other |
| Route In Use | enroute airway : zdc |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar pilot : instrument pilot : commercial pilot : cfi |
| Experience | controller non radar : 2 controller radar : 6 flight time last 90 days : 4 flight time total : 800 |
| ASRS Report | 182818 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : required legal separation other anomaly other |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | other |
| Consequence | Other |
| Miss Distance | horizontal : 24000 vertical : 600 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error Pilot Deviation |
Narrative:
Thought 2 aircraft took clearance for an mlt X to 9000 ft. Ask who took it and no response. To make sure, I told large transport Y to maintain 11000, but I said 9000. Don't know why, I wanted to say 11000 to make sure large transport Y stayed at 11000. Large transport Y did not respond, but descended shortly after issuance. Planning error on my behalf.
Original NASA ASRS Text
Title: ACR REPLY TO WRONG CALL SIGN. CTLR DIDN'T CATCH ERROR AT FIRST, THEN COULDN'T CONTACT LGT. LTSS OCCURRED.
Narrative: THOUGHT 2 ACFT TOOK CLRNC FOR AN MLT X TO 9000 FT. ASK WHO TOOK IT AND NO RESPONSE. TO MAKE SURE, I TOLD LGT Y TO MAINTAIN 11000, BUT I SAID 9000. DON'T KNOW WHY, I WANTED TO SAY 11000 TO MAKE SURE LGT Y STAYED AT 11000. LGT Y DID NOT RESPOND, BUT DSNDED SHORTLY AFTER ISSUANCE. PLANNING ERROR ON MY BEHALF.
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.