 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
B767 receives TCASII RA after another aircraft erroneously acknowledges heading change in dfw airspace.
| Attributes | |
| ACN | 415910 |
| Time | |
| Date | 199809 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : dfw airport : dfw |
| State Reference | TX |
| Altitude | msl bound lower : 3000 msl bound upper : 3000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : dfw |
| Operator | common carrier : air carrier |
| Make Model Name | Widebody, Low Wing, 2 Turbojet Eng |
| Navigation In Use | Other Other |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | descent : approach |
| Route In Use | enroute : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : commercial pilot : flight engineer pilot : instrument pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 13000 flight time type : 2000 |
| ASRS Report | 415910 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : clearance other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other flight crewa |
| Resolutory Action | flight crew : returned to intended course or assigned course flight crew : exited adverse environment other |
| Consequence | Other |
| Miss Distance | horizontal : 3000 vertical : 500 |
| Supplementary | |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
On arrival, dfw approach control changed runways from runway 18R to runway 17C and gave a frequency change. Cleared to descend to 3000 ft. Later, a heading change was given, but call sign was 'stepped on.' another aircraft replied to heading change. Vector was taking us through final, but frequency was too congested to question heading change or vector across final. Controller asked if we were turning. We replied we'd not received or replied to a heading change. He turned us and advised us of a nearby aircraft. During turning descent, we got an RA on TCASII. Visual contact was made. In response to controller's query, another aircraft acknowledged it had made the turn intended for us. Remainder of approach and landing made without incident.
Original NASA ASRS Text
Title: B767 RECEIVES TCASII RA AFTER ANOTHER ACFT ERRONEOUSLY ACKNOWLEDGES HDG CHANGE IN DFW AIRSPACE.
Narrative: ON ARR, DFW APCH CTL CHANGED RWYS FROM RWY 18R TO RWY 17C AND GAVE A FREQ CHANGE. CLRED TO DSND TO 3000 FT. LATER, A HDG CHANGE WAS GIVEN, BUT CALL SIGN WAS 'STEPPED ON.' ANOTHER ACFT REPLIED TO HDG CHANGE. VECTOR WAS TAKING US THROUGH FINAL, BUT FREQ WAS TOO CONGESTED TO QUESTION HDG CHANGE OR VECTOR ACROSS FINAL. CTLR ASKED IF WE WERE TURNING. WE REPLIED WE'D NOT RECEIVED OR REPLIED TO A HDG CHANGE. HE TURNED US AND ADVISED US OF A NEARBY ACFT. DURING TURNING DSCNT, WE GOT AN RA ON TCASII. VISUAL CONTACT WAS MADE. IN RESPONSE TO CTLR'S QUERY, ANOTHER ACFT ACKNOWLEDGED IT HAD MADE THE TURN INTENDED FOR US. REMAINDER OF APCH AND LNDG MADE WITHOUT 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.