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Potential conflict - air carrier receives TCASII 'TA' and 'RA' and they evade a cessna and continue the approach with minimal disruption.
| Attributes | |
| ACN | 301755 |
| Time | |
| Date | 199504 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : act |
| State Reference | TX |
| Altitude | msl bound lower : 4000 msl bound upper : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : act tower : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise other |
| Route In Use | approach : visual |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Skyhawk 172/Cutlass 172 |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 150 flight time total : 1680 flight time type : 100 |
| ASRS Report | 301755 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : took evasive action other |
| Consequence | Other |
| Miss Distance | vertical : 600 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On descent into waco regional, the captain was the PF. We had just descended to 4000 ft MSL for a visual approach to act. We saw traffic on TCASII at 12 O'clock position and 3500 ft MSL and 3-5 mi. Once traffic entered the 2 mi ring TCASII issued a 'TA.' the traffic was level at 3500 ft. We did not have a visual on the traffic. Shortly later the TCASII issued a RA to 'climb.' the captain immediately initiated a climb. Approach control also issued us and the 3500 ft traffic (cessna 172) TA's. We climbed approximately 300 ft then visually saw the cessna 172 and began to return to 4000 ft. We had a total climb of plus 400 ft. TCASII issued a 'clear of traffic' advisory. The cessna passed off the left approximately 600 ft below our aircraft. The flight continued without further incident.
Original NASA ASRS Text
Title: POTENTIAL CONFLICT - ACR RECEIVES TCASII 'TA' AND 'RA' AND THEY EVADE A CESSNA AND CONTINUE THE APCH WITH MINIMAL DISRUPTION.
Narrative: ON DSCNT INTO WACO REGIONAL, THE CAPT WAS THE PF. WE HAD JUST DSNDED TO 4000 FT MSL FOR A VISUAL APCH TO ACT. WE SAW TFC ON TCASII AT 12 O'CLOCK POS AND 3500 FT MSL AND 3-5 MI. ONCE TFC ENTERED THE 2 MI RING TCASII ISSUED A 'TA.' THE TFC WAS LEVEL AT 3500 FT. WE DID NOT HAVE A VISUAL ON THE TFC. SHORTLY LATER THE TCASII ISSUED A RA TO 'CLB.' THE CAPT IMMEDIATELY INITIATED A CLB. APCH CTL ALSO ISSUED US AND THE 3500 FT TFC (CESSNA 172) TA'S. WE CLBED APPROX 300 FT THEN VISUALLY SAW THE CESSNA 172 AND BEGAN TO RETURN TO 4000 FT. WE HAD A TOTAL CLB OF PLUS 400 FT. TCASII ISSUED A 'CLR OF TFC' ADVISORY. THE CESSNA PASSED OFF THE L APPROX 600 FT BELOW OUR ACFT. THE FLT CONTINUED WITHOUT FURTHER INCIDENT.
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.