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Flight crew of an large transport air carrier aircraft were distracted by TCASII warning sound during final approach and failed to acknowledge the tower's clearance to land.
| Attributes | |
| ACN | 250978 |
| Time | |
| Date | 199309 |
| Day | Tue |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : abe |
| Operator | common carrier : air carrier |
| Make Model Name | Large Transport, Low Wing, 3 Turbojet Eng |
| Flight Phase | descent : approach landing other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : flight engineer |
| Experience | flight time last 90 days : 15 flight time total : 7500 flight time type : 300 |
| ASRS Report | 250978 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp pilot : flight engineer |
| Events | |
| Anomaly | non adherence other other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On radar vectors to runway 17L at dfw airport, our flight was on a dog leg to final as approach control advised our traffic to follow was an airliner. The captain believed the traffic was on short final, however, viewing the TCASII, I picked up the actual traffic at approximately 2 1/2 mi and being overrun. This was at about 7 mi from touchdown. Much discussion pursued concerning slowing down, s-turns, etc, to increase interval. Meanwhile, tower cleared us for landing, but we did not respond to clearance due to our distraction. None of the 3 of us remember 'rogering' the clearance until rollout.
Original NASA ASRS Text
Title: FLC OF AN LGT ACR ACFT WERE DISTRACTED BY TCASII WARNING SOUND DURING FINAL APCH AND FAILED TO ACKNOWLEDGE THE TWR'S CLRNC TO LAND.
Narrative: ON RADAR VECTORS TO RWY 17L AT DFW ARPT, OUR FLT WAS ON A DOG LEG TO FINAL AS APCH CTL ADVISED OUR TFC TO FOLLOW WAS AN AIRLINER. THE CAPT BELIEVED THE TFC WAS ON SHORT FINAL, HOWEVER, VIEWING THE TCASII, I PICKED UP THE ACTUAL TFC AT APPROX 2 1/2 MI AND BEING OVERRUN. THIS WAS AT ABOUT 7 MI FROM TOUCHDOWN. MUCH DISCUSSION PURSUED CONCERNING SLOWING DOWN, S-TURNS, ETC, TO INCREASE INTERVAL. MEANWHILE, TWR CLRED US FOR LNDG, BUT WE DID NOT RESPOND TO CLRNC DUE TO OUR DISTR. NONE OF THE 3 OF US REMEMBER 'ROGERING' THE CLRNC UNTIL ROLLOUT.
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.