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Aircraft was issued the wrong frequency and while in the process of changing to the correct frequency came in close proximity to a VFR aircraft.
| Attributes | |
| ACN | 139999 |
| Time | |
| Date | 199003 |
| Day | Thu |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : aml |
| State Reference | VA |
| Altitude | msl bound lower : 8000 msl bound upper : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : iad |
| Operator | other |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : developmental |
| Experience | controller radar : 2 |
| ASRS Report | 139999 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : military |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : far other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | Other |
| Miss Distance | horizontal : 1500 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | other |
Narrative:
The problem arose from another facility issuing 2 incorrect frequencys. Pilot received 2 frequencys not available to iad and the third frequency. Change was to my sector which was the incorrect frequency to iad approach. Upon recognition of the error, switched the aircraft to the appropriate iad frequency, which in the interim, 3000' outside (below my airspace) pilot reported unobserved or tracked/VFR traffic pass in close proximity to his position.
Original NASA ASRS Text
Title: ACFT WAS ISSUED THE WRONG FREQ AND WHILE IN THE PROCESS OF CHANGING TO THE CORRECT FREQ CAME IN CLOSE PROX TO A VFR ACFT.
Narrative: THE PROB AROSE FROM ANOTHER FAC ISSUING 2 INCORRECT FREQS. PLT RECEIVED 2 FREQS NOT AVAILABLE TO IAD AND THE THIRD FREQ. CHANGE WAS TO MY SECTOR WHICH WAS THE INCORRECT FREQ TO IAD APCH. UPON RECOGNITION OF THE ERROR, SWITCHED THE ACFT TO THE APPROPRIATE IAD FREQ, WHICH IN THE INTERIM, 3000' OUTSIDE (BELOW MY AIRSPACE) PLT RPTED UNOBSERVED OR TRACKED/VFR TFC PASS IN CLOSE PROX TO HIS POS.
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.