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Corp light transport flight crew mishears heading assignment, turns into flight path of turbo aircraft causing TCASII to activate.
| Attributes | |
| ACN | 331319 |
| Time | |
| Date | 199603 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : mia |
| State Reference | FL |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : mia |
| Operator | general aviation : corporate |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : approach other |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | other : unknown |
| Flight Phase | cruise other |
| Person 1 | |
| Affiliation | Other |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 100 flight time total : 8300 flight time type : 1700 |
| ASRS Report | 331319 |
| Person 2 | |
| Affiliation | Other |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : far non adherence : clearance other spatial deviation |
| Independent Detector | other controllera other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course other |
| Consequence | Other |
| Miss Distance | horizontal : 6000 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
We were being vectored for an approach to ILS runway 27R at mia. On a heading of 090 degrees, we were given a heading change to 070 degrees. The PF understood a heading of 170 degrees and started his turn. I thought the approach controller had said 070 degrees but because of radio congestion my inquiry as to verification of the heading must have been stepped on. In our turn toward 170 degrees, I noticed an airline turboprop at our 12 O'clock position at 2 mi. I pointed traffic out to the PF and he immediately started a turn away from traffic and back toward our 090 degree heading. As we were making our turn back, the controller asked if we were turning to the heading 070 degrees. I stated that we were making a turn back to heading 070 degrees. About this time, the turboprop in question had a TCASII warning and had started a climb. The controller verified with us that we had the turboprop in sight. Then he advised the turboprop that we had him in sight and were turning away from him. As close as I can tell we came within a mi of the turboprop. A misunderstanding of communication plus the radio congestion, all contributed to this situation. I believe the PF made the right decision in turning away from other aircraft to avoid conflict or coming any closer to the other aircraft. I'm sure we both will give more attention to verification of heading change.
Original NASA ASRS Text
Title: CORP LTT FLC MISHEARS HDG ASSIGNMENT, TURNS INTO FLT PATH OF TURBO ACFT CAUSING TCASII TO ACTIVATE.
Narrative: WE WERE BEING VECTORED FOR AN APCH TO ILS RWY 27R AT MIA. ON A HDG OF 090 DEGS, WE WERE GIVEN A HDG CHANGE TO 070 DEGS. THE PF UNDERSTOOD A HDG OF 170 DEGS AND STARTED HIS TURN. I THOUGHT THE APCH CTLR HAD SAID 070 DEGS BUT BECAUSE OF RADIO CONGESTION MY INQUIRY AS TO VERIFICATION OF THE HDG MUST HAVE BEEN STEPPED ON. IN OUR TURN TOWARD 170 DEGS, I NOTICED AN AIRLINE TURBOPROP AT OUR 12 O'CLOCK POS AT 2 MI. I POINTED TFC OUT TO THE PF AND HE IMMEDIATELY STARTED A TURN AWAY FROM TFC AND BACK TOWARD OUR 090 DEG HDG. AS WE WERE MAKING OUR TURN BACK, THE CTLR ASKED IF WE WERE TURNING TO THE HDG 070 DEGS. I STATED THAT WE WERE MAKING A TURN BACK TO HDG 070 DEGS. ABOUT THIS TIME, THE TURBOPROP IN QUESTION HAD A TCASII WARNING AND HAD STARTED A CLB. THE CTLR VERIFIED WITH US THAT WE HAD THE TURBOPROP IN SIGHT. THEN HE ADVISED THE TURBOPROP THAT WE HAD HIM IN SIGHT AND WERE TURNING AWAY FROM HIM. AS CLOSE AS I CAN TELL WE CAME WITHIN A MI OF THE TURBOPROP. A MISUNDERSTANDING OF COM PLUS THE RADIO CONGESTION, ALL CONTRIBUTED TO THIS SIT. I BELIEVE THE PF MADE THE RIGHT DECISION IN TURNING AWAY FROM OTHER ACFT TO AVOID CONFLICT OR COMING ANY CLOSER TO THE OTHER ACFT. I'M SURE WE BOTH WILL GIVE MORE ATTN TO VERIFICATION OF HDG CHANGE.
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.