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D10 controller described a conflict between 2 departures off parallel runways at dfw involving pilot deviation; suggesting initial ATC assigned heading with ATC directing aircraft to the RNAV procedure.
| Attributes | |
| ACN | 723425 |
| Time | |
| Date | 200701 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dfw.airport |
| State Reference | TX |
| Altitude | msl single value : 3000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | MD-88 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | other |
| Flight Phase | climbout : initial |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : d10.tracon |
| Operator | general aviation : corporate |
| Make Model Name | Citationjet C525/C526 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 23 |
| ASRS Report | 723425 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance flight crew : took evasive action |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 3000 vertical : 0 |
| Supplementary | |
| Problem Areas | Flight Crew Human Performance |
| Primary Problem | Flight Crew Human Performance |
| Air Traffic Incident | Pilot Deviation |
Narrative:
Dfw airport was in a north flow with an 1800 ft overcast tops reported at approximately 3000 ft. Air carrier X departed runway 36R routed via ferra intersection on the RNAV departure. This aircraft had properly started the RNAV procedure. Aircraft Y departed runway 35L routed via clare intersection on the RNAV departure. Aircraft Y appeared to drift to the west. I issued air carrier X a 20 degree left turn and alerted the departure one position of the situation. I issued air carrier X a TA to which the aircraft responded 'in sight.' aircraft Y then made an abrupt turn to the west. I issued air carrier X an immediate turn to heading 260 degrees. In the past 8 months we have experienced at least 3 similar instances of aircraft coming dangerously close. In all of these cases 1 pilot or the other did not initiate the RNAV route in a timely manner or had bad data programmed. This procedure should be immediately modified; so that aircraft are assigned headings that establish divergence then let the controller initiate the RNAV routing. This is how atlanta and las vegas use the RNAV departure procedures.
Original NASA ASRS Text
Title: D10 CTLR DESCRIBED A CONFLICT BTWN 2 DEPS OFF PARALLEL RWYS AT DFW INVOLVING PLTDEV; SUGGESTING INITIAL ATC ASSIGNED HDG WITH ATC DIRECTING ACFT TO THE RNAV PROC.
Narrative: DFW ARPT WAS IN A N FLOW WITH AN 1800 FT OVCST TOPS RPTED AT APPROX 3000 FT. ACR X DEPARTED RWY 36R ROUTED VIA FERRA INTXN ON THE RNAV DEP. THIS ACFT HAD PROPERLY STARTED THE RNAV PROC. ACFT Y DEPARTED RWY 35L ROUTED VIA CLARE INTXN ON THE RNAV DEP. ACFT Y APPEARED TO DRIFT TO THE W. I ISSUED ACR X A 20 DEG L TURN AND ALERTED THE DEP ONE POS OF THE SITUATION. I ISSUED ACR X A TA TO WHICH THE ACFT RESPONDED 'IN SIGHT.' ACFT Y THEN MADE AN ABRUPT TURN TO THE W. I ISSUED ACR X AN IMMEDIATE TURN TO HDG 260 DEGS. IN THE PAST 8 MONTHS WE HAVE EXPERIENCED AT LEAST 3 SIMILAR INSTANCES OF ACFT COMING DANGEROUSLY CLOSE. IN ALL OF THESE CASES 1 PLT OR THE OTHER DID NOT INITIATE THE RNAV RTE IN A TIMELY MANNER OR HAD BAD DATA PROGRAMMED. THIS PROC SHOULD BE IMMEDIATELY MODIFIED; SO THAT ACFT ARE ASSIGNED HDGS THAT ESTABLISH DIVERGENCE THEN LET THE CTLR INITIATE THE RNAV ROUTING. THIS IS HOW ATLANTA AND LAS VEGAS USE THE RNAV DEP PROCS.
Data retrieved from NASA's ASRS site as of January 2009 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.