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Flight crew of air carrier medium large transport climbed from assigned in response to a TCASII RA caused by another aircraft overshooting ILS final.
| Attributes | |
| ACN | 268007 |
| Time | |
| Date | 199404 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 3500 |
| Environment | |
| Flight Conditions | IMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw tower : cle |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Merlin Undifferentiated or Other Model |
| Operating Under FAR Part | Part 135 |
| Flight Phase | descent : approach descent other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 220 flight time total : 12000 flight time type : 3000 |
| ASRS Report | 268007 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : commercial pilot : instrument |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other other spatial deviation |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : took evasive action flight crew : returned to intended course or assigned course |
| Consequence | Other |
| Miss Distance | horizontal : 6000 vertical : 200 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Heading 070 degrees for radar vectors to runway 18R ILS at dfw. Our altitude was 3000 ft. We received a TCASII RA to climb. Action was taken to climb to 3500 ft. Aircraft on TCASII appeared to be about 12:30 position, about 200 ft below us. Approach control gave no warning. We asked approach control about it. They said it was a 'merlin' that overflew the ILS.
Original NASA ASRS Text
Title: FLC OF ACR MLG CLBED FROM ASSIGNED IN RESPONSE TO A TCASII RA CAUSED BY ANOTHER ACFT OVERSHOOTING ILS FINAL.
Narrative: HDG 070 DEGS FOR RADAR VECTORS TO RWY 18R ILS AT DFW. OUR ALT WAS 3000 FT. WE RECEIVED A TCASII RA TO CLB. ACTION WAS TAKEN TO CLB TO 3500 FT. ACFT ON TCASII APPEARED TO BE ABOUT 12:30 POS, ABOUT 200 FT BELOW US. APCH CTL GAVE NO WARNING. WE ASKED APCH CTL ABOUT IT. THEY SAID IT WAS A 'MERLIN' THAT OVERFLEW THE ILS.
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.