 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
Bna controller becomes distraction issuing an incorrect clearance which required immediate turns between a climbing B737 and an arriving F100 to ensure separation.
| Attributes | |
| ACN | 459401 |
| Time | |
| Date | 200001 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| State Reference | TN |
| Altitude | msl bound lower : 5000 msl bound upper : 6000 |
| Environment | |
| Flight Conditions | Marginal |
| Weather Elements | Turbulence Thunderstorm |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bna.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar pilot : private |
| Experience | controller non radar : 12 controller radar : 4 controller time certified in position1 : 3 flight time total : 120 |
| ASRS Report | 459401 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe inflight encounter : turbulence inflight encounter : weather non adherence : published procedure |
| Independent Detector | other controllera |
| Resolutory Action | controller : separated traffic controller : issued new clearance |
| Supplementary | |
| Problem Areas | ATC Human Performance Weather |
| Primary Problem | ATC Human Performance |
Narrative:
WX was building in the area in the form of thunderstorms. Traffic was light but distrs in the form of non operational conversations averted my usual vigilance on position. Upon departure, the B737 was told to climb to 15000 ft and turn to heading 150 degrees to avoid a buildup. Pilot complied as instructed. My intent was to only climb the B737 to 5000 ft because of arriving FK100 traffic. I went so far as to tell the B737 to expect higher reference to traffic descending out of 8400 ft to 6000 ft. Immediate turns were issued to both aircraft to prevent loss of separation. Contributing factors were my lack of vigilance due to concentration on the numerous involved conversations around and including me. This caused a slower than normal response to the deteriorating situation and my initial error in climbing the B737. Maintain a high level of concentration at all times. All distrs be removed or stopped which affect awareness, concentration, etc.
Original NASA ASRS Text
Title: BNA CTLR BECOMES DISTR ISSUING AN INCORRECT CLRNC WHICH REQUIRED IMMEDIATE TURNS BTWN A CLBING B737 AND AN ARRIVING F100 TO ENSURE SEPARATION.
Narrative: WX WAS BUILDING IN THE AREA IN THE FORM OF TSTMS. TFC WAS LIGHT BUT DISTRS IN THE FORM OF NON OPERATIONAL CONVERSATIONS AVERTED MY USUAL VIGILANCE ON POS. UPON DEP, THE B737 WAS TOLD TO CLB TO 15000 FT AND TURN TO HDG 150 DEGS TO AVOID A BUILDUP. PLT COMPLIED AS INSTRUCTED. MY INTENT WAS TO ONLY CLB THE B737 TO 5000 FT BECAUSE OF ARRIVING FK100 TFC. I WENT SO FAR AS TO TELL THE B737 TO EXPECT HIGHER REF TO TFC DSNDING OUT OF 8400 FT TO 6000 FT. IMMEDIATE TURNS WERE ISSUED TO BOTH ACFT TO PREVENT LOSS OF SEPARATION. CONTRIBUTING FACTORS WERE MY LACK OF VIGILANCE DUE TO CONCENTRATION ON THE NUMEROUS INVOLVED CONVERSATIONS AROUND AND INCLUDING ME. THIS CAUSED A SLOWER THAN NORMAL RESPONSE TO THE DETERIORATING SIT AND MY INITIAL ERROR IN CLBING THE B737. MAINTAIN A HIGH LEVEL OF CONCENTRATION AT ALL TIMES. ALL DISTRS BE REMOVED OR STOPPED WHICH AFFECT AWARENESS, CONCENTRATION, ETC.
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.