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Iad controller expressed concern regarding facility procedure to provide tower visual separation between aircraft using runways 19 left and right and runway 12.
| Attributes | |
| ACN | 720854 |
| Time | |
| Date | 200612 |
| Place | |
| Locale Reference | airport : iad.airport |
| State Reference | VA |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : iad.tower |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : local |
| Experience | controller limited radar : 3 controller military : 4 controller non radar : 20 controller radar : 20 controller time certified in position1 : 14 |
| ASRS Report | 720854 |
| Events | |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | other |
| Supplementary | |
| Problem Areas | FAA |
| Primary Problem | FAA |
| Situations | |
| ATC Facility | procedure or policy : iad.tower |
Narrative:
The controllers at dulles tower (iad) are forced to provide visual separation between aircraft on approach to runways 19R/left and 12. A combination of instrument and/or visual approachs are being run simultaneously to these 3 runways. If visual separation can't be provided by the tower; potomac TRACON (pct) is required to stagger these approachs in order to ensure IFR separation to the threshold and protect for a missed approach. This procedure violates faao 7110.65 7-4-4 approachs to multiple runways. When using visual separation; approachs should only be run to 2 runways not 3 (given the runway confign at dulles).
Original NASA ASRS Text
Title: IAD CTLR EXPRESSED CONCERN REGARDING FACILITY PROC TO PROVIDE TWR VISUAL SEPARATION BTWN ACFT USING RWYS 19 L AND R AND RWY 12.
Narrative: THE CTLRS AT DULLES TWR (IAD) ARE FORCED TO PROVIDE VISUAL SEPARATION BTWN ACFT ON APCH TO RWYS 19R/L AND 12. A COMBINATION OF INST AND/OR VISUAL APCHS ARE BEING RUN SIMULTANEOUSLY TO THESE 3 RWYS. IF VISUAL SEPARATION CAN'T BE PROVIDED BY THE TWR; POTOMAC TRACON (PCT) IS REQUIRED TO STAGGER THESE APCHS IN ORDER TO ENSURE IFR SEPARATION TO THE THRESHOLD AND PROTECT FOR A MISSED APCH. THIS PROC VIOLATES FAAO 7110.65 7-4-4 APCHS TO MULTIPLE RWYS. WHEN USING VISUAL SEPARATION; APCHS SHOULD ONLY BE RUN TO 2 RWYS NOT 3 (GIVEN THE RWY CONFIGN AT DULLES).
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.