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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZID controller experienced operational error at 14000 when failing to observe speed variance during climb/descent event between two aircraft.
| Attributes | |
| ACN | 760008 |
| Time | |
| Date | 200710 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : hnb.vor |
| State Reference | IN |
| Altitude | msl single value : 14000 |
| Environment | |
| Light | Dawn |
| Aircraft 1 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : vacating altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zid.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : vacating altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 2 controller radar : 16 controller time certified in position1 : 16 controller time certified in position2 : 8 |
| ASRS Report | 760008 |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert controller : issued new clearance |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 27000 vertical : 800 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Strong winds from the south. 1ST aircraft evv..cvg climbing. 2ND; stl..sdf descending. 1ST aircraft was about 80 KTS slower than aircraft #2. When issued a climb to aircraft #1 turned to the north to go behind aircraft #2. Speed increased dramatically and was caught off guard.
Original NASA ASRS Text
Title: ZID CTLR EXPERIENCED OPERROR AT 14000 WHEN FAILING TO OBSERVE SPEED VARIANCE DURING CLIMB/DESCENT EVENT BETWEEN TWO ACFT.
Narrative: STRONG WINDS FROM THE S. 1ST ACFT EVV..CVG CLBING. 2ND; STL..SDF DSNDING. 1ST ACFT WAS ABOUT 80 KTS SLOWER THAN ACFT #2. WHEN ISSUED A CLB TO ACFT #1 TURNED TO THE N TO GO BEHIND ACFT #2. SPD INCREASED DRAMATICALLY AND WAS CAUGHT OFF GUARD.
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.