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ARTCC radar controller issued descent clearance to an aircraft and another aircraft read back the clearance. Standard separation was lost when the wrong aircraft descended.
| Attributes | |
| ACN | 152083 |
| Time | |
| Date | 199007 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : ood |
| State Reference | NJ |
| Altitude | msl bound lower : 18000 msl bound upper : 18000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zdc |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | cruise other |
| Route In Use | arrival star : star |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 3 Turbojet Eng |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | arrival star : star |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller radar : 2 |
| ASRS Report | 152083 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 11000 flight time type : 100 |
| ASRS Report | 152414 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure |
| Independent Detector | atc equipment other atc equipment : unspecified |
| Resolutory Action | controller : issued new clearance none taken : detected after the fact |
| Consequence | faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 6000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
During a busy inbound push to ewr, there were 4 aircraft with similar sounding call signs, an aircraft with given clearance to descend and another aircraft read back the clearance. However, the readback was sloppy and sounded to me to have been read back by the correct aircraft. Pilots have to listen also. Callback conversation with reporter revealed the following: reporter stated the incident occurred over woodstown VOR between a widebody transport and an large transport. Sep was reported as 1 latitude mi. Reporter stated he had 1 1/2 yrs as an fpl. C/a did not activate.
Original NASA ASRS Text
Title: ARTCC RADAR CTLR ISSUED DESCENT CLRNC TO AN ACFT AND ANOTHER ACFT READ BACK THE CLRNC. STANDARD SEPARATION WAS LOST WHEN THE WRONG ACFT DESCENDED.
Narrative: DURING A BUSY INBND PUSH TO EWR, THERE WERE 4 ACFT WITH SIMILAR SOUNDING CALL SIGNS, AN ACFT WITH GIVEN CLRNC TO DSND AND ANOTHER ACFT READ BACK THE CLRNC. HOWEVER, THE READBACK WAS SLOPPY AND SOUNDED TO ME TO HAVE BEEN READ BACK BY THE CORRECT ACFT. PLTS HAVE TO LISTEN ALSO. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING: RPTR STATED THE INCIDENT OCCURRED OVER WOODSTOWN VOR BTWN A WDB AND AN LGT. SEP WAS RPTED AS 1 LAT MI. RPTR STATED HE HAD 1 1/2 YRS AS AN FPL. C/A DID NOT ACTIVATE.
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.