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Air carrier aircraft takes evasive action to avoid conflict with small aircraft on parallel runway visual approach. Near midair collision.
| Attributes | |
| ACN | 374475 |
| Time | |
| Date | 199707 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : tus |
| State Reference | AZ |
| Altitude | msl bound lower : 3600 msl bound upper : 3600 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : tus |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Cessna Single Piston Undifferentiated or Other Model |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial pilot : flight engineer |
| ASRS Report | 374475 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : nmac other spatial deviation |
| Independent Detector | other flight crewa |
| Resolutory Action | flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | horizontal : 200 vertical : 50 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared for a visual approach to runway 11L at tus. We were backing up the visual with the ILS. We were established on course and GS. Tower called traffic turning a right base for a visual to runway 11R. We visually acquired a blue and white cessna on a dog-leg to final. Initially we noticed he was overshooting his assigned runway but then realized he was lining up on runway 11L. We turned left and descended to avoid the conflict and then initiated a go around after we were clear. The close proximity of the parallel runways made the conflict develop very quickly. Aircraft need to be sequenced staggered to these runways. The difference in the final approach speeds of these 2 aircraft caused this conflict to develop rapidly. These differences need to be considered.
Original NASA ASRS Text
Title: ACR ACFT TAKES EVASIVE ACTION TO AVOID CONFLICT WITH SMA ON PARALLEL RWY VISUAL APCH. NMAC.
Narrative: WE WERE CLRED FOR A VISUAL APCH TO RWY 11L AT TUS. WE WERE BACKING UP THE VISUAL WITH THE ILS. WE WERE ESTABLISHED ON COURSE AND GS. TWR CALLED TFC TURNING A R BASE FOR A VISUAL TO RWY 11R. WE VISUALLY ACQUIRED A BLUE AND WHITE CESSNA ON A DOG-LEG TO FINAL. INITIALLY WE NOTICED HE WAS OVERSHOOTING HIS ASSIGNED RWY BUT THEN REALIZED HE WAS LINING UP ON RWY 11L. WE TURNED L AND DSNDED TO AVOID THE CONFLICT AND THEN INITIATED A GAR AFTER WE WERE CLR. THE CLOSE PROX OF THE PARALLEL RWYS MADE THE CONFLICT DEVELOP VERY QUICKLY. ACFT NEED TO BE SEQUENCED STAGGERED TO THESE RWYS. THE DIFFERENCE IN THE FINAL APCH SPDS OF THESE 2 ACFT CAUSED THIS CONFLICT TO DEVELOP RAPIDLY. THESE DIFFERENCES NEED TO BE CONSIDERED.
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.