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ZME controller entered mem airspace without coordination because of unexpected speed reduction by in trail aircraft requiring an immediate turn.
| Attributes | |
| ACN | 760385 |
| Time | |
| Date | 200711 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : mem.airport |
| State Reference | TN |
| Altitude | msl single value : 10000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | artcc : zme.artcc tower : jfk.tower |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : n/s |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zme.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival star : n/s |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller non radar : 4 controller radar : 23 controller time certified in position1 : 7 |
| ASRS Report | 760385 |
| Events | |
| Anomaly | airspace violation : entry non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | ATC Human Performance Flight Crew Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation |
Narrative:
Air carrier X was cleared to maintain 320K. Air carrier Y in trail of air carrier X was also assigned 320K. Air carrier X slowed to 280K without clearance. Air carrier Y had to be stopped at 11000 ft. Slowed to 250K to maintain separation. Air carrier Y was turned away from ZME airspace in order to comply with LOA procedures that state that mem ARTCC will cross the xfer of control point at 10000 ft and 5 mi in trail spacing constant or increasing. Air carrier Y turn radius resulted in the aircraft coming within 2 1/2 mi of ZME airspace without a handoff or pointout.
Original NASA ASRS Text
Title: ZME CTLR ENTERED MEM AIRSPACE WITHOUT COORD BECAUSE OF UNEXPECTED SPEED REDUCTION BY IN TRAIL ACFT REQUIRING AN IMMEDIATE TURN.
Narrative: ACR X WAS CLRED TO MAINTAIN 320K. ACR Y IN TRAIL OF ACR X WAS ALSO ASSIGNED 320K. ACR X SLOWED TO 280K WITHOUT CLRNC. ACR Y HAD TO BE STOPPED AT 11000 FT. SLOWED TO 250K TO MAINTAIN SEPARATION. ACR Y WAS TURNED AWAY FROM ZME AIRSPACE IN ORDER TO COMPLY WITH LOA PROCS THAT STATE THAT MEM ARTCC WILL CROSS THE XFER OF CTL POINT AT 10000 FT AND 5 MI IN TRAIL SPACING CONSTANT OR INCREASING. ACR Y TURN RADIUS RESULTED IN THE ACFT COMING WITHIN 2 1/2 MI OF ZME AIRSPACE WITHOUT A HDOF OR POINTOUT.
Data retrieved from NASA's ASRS site as of January 2009 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.