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While holding non radar, aircraft X's data tag was lost for an unknown reason. Aircraft X was either forgotten or retagged with a wrong call sign and aircraft Y was put into holding at the same altitude. Separation was lost.
| Attributes | |
| ACN | 444842 |
| Time | |
| Date | 199907 |
| Day | Wed |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | intersection : hyper |
| State Reference | VA |
| Altitude | msl single value : 13000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : holding pattern |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : iad.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 41 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : holding pattern |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : handoff position controller : supervisor |
| Qualification | controller : radar |
| Experience | controller radar : 15 controller supervisory : 8 controller time certified in position1 : 15 flight time total : 130 |
| ASRS Report | 444842 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | aircraft equipment : tcas other controllera |
| Resolutory Action | none taken : insufficient time |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 11460 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Non radar holding at robrt and hyper intxns for iad. All aircraft cleared out of pattern except aircraft #1 at 13000 ft. No tag due to host/non host (ZDC/ZNY). Forgot about aircraft #1 tagged on wrong call sign. Gave pattern to ZNY for more arrs.
Original NASA ASRS Text
Title: WHILE HOLDING NON RADAR, ACFT X'S DATA TAG WAS LOST FOR AN UNKNOWN REASON. ACFT X WAS EITHER FORGOTTEN OR RETAGGED WITH A WRONG CALL SIGN AND ACFT Y WAS PUT INTO HOLDING AT THE SAME ALT. SEPARATION WAS LOST.
Narrative: NON RADAR HOLDING AT ROBRT AND HYPER INTXNS FOR IAD. ALL ACFT CLRED OUT OF PATTERN EXCEPT ACFT #1 AT 13000 FT. NO TAG DUE TO HOST/NON HOST (ZDC/ZNY). FORGOT ABOUT ACFT #1 TAGGED ON WRONG CALL SIGN. GAVE PATTERN TO ZNY FOR MORE ARRS.
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.