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Heading track deviation during thunderstorm avoidance procedure by the flight crew of an A319 40 mi northwest of nucar intersection on frequency with ZMA.
| Attributes | |
| ACN | 628139 |
| Time | |
| Date | 200408 |
| Day | Wed |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | intersection : nucar |
| Altitude | msl single value : 35000 |
| Environment | |
| Flight Conditions | IMC |
| Weather Elements | Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zma.artcc tower : oak.tower |
| Operator | common carrier : air carrier |
| Make Model Name | A319 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Route In Use | enroute : atlantic enroute airway : ar3.airway |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zma.artcc |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Flight Phase | cruise : level |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : flight engineer pilot : atp pilot : cfi |
| Experience | flight time last 90 days : 2525 flight time total : 16000 flight time type : 1400 |
| ASRS Report | 628139 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time last 90 days : 200 flight time total : 18000 flight time type : 2000 |
| ASRS Report | 628138 |
| Events | |
| Anomaly | inflight encounter : weather inflight encounter other non adherence : clearance non adherence : required legal separation other spatial deviation |
| Independent Detector | other controllera other flight crewa other flight crewb |
| Resolutory Action | controller : issued alert none taken : anomaly accepted |
| Consequence | faa : reviewed incident with flight crew other |
| Supplementary | |
| Problem Areas | Weather Flight Crew Human Performance ATC Human Performance |
| Primary Problem | Weather |
| Air Traffic Incident | Pilot Deviation |
Narrative:
This involves a problem with a controller while deviating around WX sbound on ar-3. There was thunderstorms along the airway and we were cleared to deviate as necessary with a 20 degree limitation right or left. We just made a right deviation and were paralleling the airway. We then began a left deviation with a thunderstorm ahead. It became apparent that we needed to deviate more than 20 degrees. We discussed where we wanted to go. Since we were in close proximity to a cell, I turned more than 20 degrees temporarily and almost simultaneously that captain advised ATC of our need for a greater turn. ATC immediately yelled (literally) at us accusing us of violating the 20 degree deviation restr. He apparently had an aircraft behind us and was concerned about separation. There was no TA/RA. This could have been prevented if ATC had advised us the reason for the restr and thus we would have been aware of the tight separation. We probably could have spoken sooner, but due to the dynamic nature of the WX we were not sure of the heading we were going to use. Due to chatter we could not get a word in earlier.
Original NASA ASRS Text
Title: HDG TRACK DEV DURING TSTM AVOIDANCE PROC BY THE FLT CREW OF AN A319 40 MI NW OF NUCAR INTXN ON FREQ WITH ZMA.
Narrative: THIS INVOLVES A PROB WITH A CTLR WHILE DEVIATING AROUND WX SBOUND ON AR-3. THERE WAS TSTMS ALONG THE AIRWAY AND WE WERE CLRED TO DEVIATE AS NECESSARY WITH A 20 DEG LIMITATION R OR L. WE JUST MADE A R DEV AND WERE PARALLELING THE AIRWAY. WE THEN BEGAN A L DEV WITH A TSTM AHEAD. IT BECAME APPARENT THAT WE NEEDED TO DEVIATE MORE THAN 20 DEGS. WE DISCUSSED WHERE WE WANTED TO GO. SINCE WE WERE IN CLOSE PROX TO A CELL, I TURNED MORE THAN 20 DEGS TEMPORARILY AND ALMOST SIMULTANEOUSLY THAT CAPT ADVISED ATC OF OUR NEED FOR A GREATER TURN. ATC IMMEDIATELY YELLED (LITERALLY) AT US ACCUSING US OF VIOLATING THE 20 DEG DEV RESTR. HE APPARENTLY HAD AN ACFT BEHIND US AND WAS CONCERNED ABOUT SEPARATION. THERE WAS NO TA/RA. THIS COULD HAVE BEEN PREVENTED IF ATC HAD ADVISED US THE REASON FOR THE RESTR AND THUS WE WOULD HAVE BEEN AWARE OF THE TIGHT SEPARATION. WE PROBABLY COULD HAVE SPOKEN SOONER, BUT DUE TO THE DYNAMIC NATURE OF THE WX WE WERE NOT SURE OF THE HDG WE WERE GOING TO USE. DUE TO CHATTER WE COULD NOT GET A WORD IN EARLIER.
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.