 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Air carrier turboprop, on visual approach to runway 21L, passed air carrier large transport on visual approach to runway 21C, after being instructed to maintain visual separation.
| Attributes | |
| ACN | 94417 |
| Time | |
| Date | 198809 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Altitude | agl bound lower : 500 agl bound upper : 800 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach descent other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent : approach descent other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 150 flight time total : 15000 flight time type : 10000 |
| ASRS Report | 94417 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : unable |
| Consequence | Other |
| Miss Distance | horizontal : 3900 vertical : 0 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were cleared for a visual approach to runway 21L at dtw. Our traffic was large transport Y making a visual approach ahead of us to runway 21 center. Our speed was greater than his and consequently we overtook and passed this aircraft at approximately 800' AGL. I was not overly concerned until we actually started to pas and then it was too late to slow further and maintain a distance behind the aircraft. My decision to continue the approach was based on both aircraft being firmly committed to their respective runways. This could have been prevented by my having recognized the significant difference in speed, or having been told by the tower that our speed was much greater than large transport Y.
Original NASA ASRS Text
Title: ACR TURBOPROP, ON VISUAL APCH TO RWY 21L, PASSED ACR LGT ON VISUAL APCH TO RWY 21C, AFTER BEING INSTRUCTED TO MAINTAIN VISUAL SEPARATION.
Narrative: WE WERE CLRED FOR A VISUAL APCH TO RWY 21L AT DTW. OUR TFC WAS LGT Y MAKING A VISUAL APCH AHEAD OF US TO RWY 21 CENTER. OUR SPD WAS GREATER THAN HIS AND CONSEQUENTLY WE OVERTOOK AND PASSED THIS ACFT AT APPROX 800' AGL. I WAS NOT OVERLY CONCERNED UNTIL WE ACTUALLY STARTED TO PAS AND THEN IT WAS TOO LATE TO SLOW FURTHER AND MAINTAIN A DISTANCE BEHIND THE ACFT. MY DECISION TO CONTINUE THE APCH WAS BASED ON BOTH ACFT BEING FIRMLY COMMITTED TO THEIR RESPECTIVE RWYS. THIS COULD HAVE BEEN PREVENTED BY MY HAVING RECOGNIZED THE SIGNIFICANT DIFFERENCE IN SPD, OR HAVING BEEN TOLD BY THE TWR THAT OUR SPD WAS MUCH GREATER THAN LGT Y.
Data retrieved from NASA's ASRS site as of August 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.