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B727 multiple runway operation parallel runways visual approachs had less than standard separation from C550. Evasive action taken. System error.
| Attributes | |
| ACN | 293059 |
| Time | |
| Date | 199501 |
| Day | Fri |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | atc facility : mem |
| State Reference | TN |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : mem |
| Operator | common carrier : air carrier |
| Make Model Name | B727 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Citation II S2/Bravo |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 7 |
| ASRS Report | 293059 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action |
| Consequence | Other |
| Miss Distance | horizontal : 1200 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
While working the parallel final radar position at mem approach, I had a B727 and a CE550 lose standard separation and end up in a compromising situation. This was brought about by frequency congestion and other pilots tieing up the frequency and preventing me from controling the traffic. When I was finally able to issue instructions, the 2 aircraft were separated and continued their simultaneous approachs without further incident. The incident could have been prevented by pilots taking the time to listen briefly before trying to establish contact with me. Also, pilots should listen more carefully to prevent them from accepting control instructions meant for another aircraft.
Original NASA ASRS Text
Title: B727 MULTIPLE RWY OP PARALLEL RWYS VISUAL APCHS HAD LTSS FROM C550. EVASIVE ACTION TAKEN. SYS ERROR.
Narrative: WHILE WORKING THE PARALLEL FINAL RADAR POS AT MEM APCH, I HAD A B727 AND A CE550 LOSE STANDARD SEPARATION AND END UP IN A COMPROMISING SIT. THIS WAS BROUGHT ABOUT BY FREQ CONGESTION AND OTHER PLTS TIEING UP THE FREQ AND PREVENTING ME FROM CTLING THE TFC. WHEN I WAS FINALLY ABLE TO ISSUE INSTRUCTIONS, THE 2 ACFT WERE SEPARATED AND CONTINUED THEIR SIMULTANEOUS APCHS WITHOUT FURTHER INCIDENT. THE INCIDENT COULD HAVE BEEN PREVENTED BY PLTS TAKING THE TIME TO LISTEN BRIEFLY BEFORE TRYING TO ESTABLISH CONTACT WITH ME. ALSO, PLTS SHOULD LISTEN MORE CAREFULLY TO PREVENT THEM FROM ACCEPTING CTL INSTRUCTIONS MEANT FOR ANOTHER ACFT.
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.