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During a delay in establishing communication with approach control after a hand off from ARTCC, a traffic conflict occurred between an air carrier and a single engine biplane. A TCASII resolution advisory resolved the conflict and communication was reestablished.
| Attributes | |
| ACN | 506040 |
| Time | |
| Date | 200103 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : iad.tracon |
| State Reference | VA |
| Altitude | msl single value : 8000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Do 328 TP (Turboprop) |
| Flight Phase | descent : approach |
| Route In Use | arrival star : irons 4 |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : multi engine pilot : commercial pilot : cfi pilot : atp pilot : instrument |
| Experience | flight time last 90 days : 210 flight time total : 5200 flight time type : 3800 |
| ASRS Report | 506040 |
| Events | |
| Anomaly | altitude deviation : excursion from assigned altitude conflict : airborne critical other anomaly other |
| Resolutory Action | flight crew : returned to assigned altitude flight crew : took evasive action other |
| Miss Distance | horizontal : 5280 vertical : 400 |
| Supplementary | |
| Problem Areas | ATC Facility ATC Human Performance Flight Crew Human Performance Airspace Structure Aircraft |
| Primary Problem | Ambiguous |
| Air Traffic Incident | Inter Facility Coordination Failure |
Narrative:
We were on a flight from ric to dca. Approximately 10 miles south of ojay intersection on the irons 4 arrival into dca, we were switched to dca approach. I called 2 times and they didn't respond. We then saw traffic on our TCASII and realized it was going to be close to us. I urgently tried to contact approach with no avail. We got a TCASII TA and then a TCASII RA. It told us to descend. We complied with the RA and descended to 7200 ft MSL. Once the traffic had passed, started to climb back to our altitude. I finally got a hold of dca approach and advised him of our situation. He tol us to descend to 7200 ft MSL, which we did with no other problems.
Original NASA ASRS Text
Title: DURING A DELAY IN ESTABLISHING COM WITH APCH CTL AFTER A HAND OFF FROM ARTCC, A TFC CONFLICT OCCURRED BETWEEN AN ACR AND A SINGLE ENGINE BIPLANE. A TCASII RESOLUTION ADVISORY RESOLVED THE CONFLICT AND COM WAS REESTABLISHED.
Narrative: WE WERE ON A FLT FROM RIC TO DCA. APPROX 10 MILES S OF OJAY INTXN ON THE IRONS 4 ARR INTO DCA, WE WERE SWITCHED TO DCA APCH. I CALLED 2 TIMES AND THEY DIDN'T RESPOND. WE THEN SAW TFC ON OUR TCASII AND REALIZED IT WAS GOING TO BE CLOSE TO US. I URGENTLY TRIED TO CONTACT APCH WITH NO AVAIL. WE GOT A TCASII TA AND THEN A TCASII RA. IT TOLD US TO DESCEND. WE COMPLIED WITH THE RA AND DESCENDED TO 7200 FT MSL. ONCE THE TFC HAD PASSED, STARTED TO CLB BACK TO OUR ALT. I FINALLY GOT A HOLD OF DCA APCH AND ADVISED HIM OF OUR SIT. HE TOL US TO DESCEND TO 7200 FT MSL, WHICH WE DID WITH NO OTHER PROBS.
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.