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37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
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ZBW controller experienced operational error at 15000 ft when actions taken to resolve an overtake situation were too late to be effective.
| Attributes | |
| ACN | 711410 |
| Time | |
| Date | 200609 |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : bos.airport |
| State Reference | MA |
| Altitude | msl single value : 15000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Night |
| Aircraft 1 | |
| Operator | common carrier : air taxi |
| Make Model Name | Beech 1900 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air taxi |
| Make Model Name | Beech 1900 |
| Flight Phase | climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Qualification | controller : radar |
| Experience | controller military : 3 controller non radar : 11 controller radar : 10 flight time total : 900 |
| ASRS Report | 711410 |
| Person 2 | |
| Affiliation | company : air taxi |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation other anomaly |
| 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 : 27000 vertical : 900 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was monitoring the speed of the aircraft as they climbed to 15000 ft and leveled. I noticed the second aircraft's speed increase and I tried to slow him down. I also descended the first aircraft and tried to use visual separation. Just not in time to maintain 5 mi.
Original NASA ASRS Text
Title: ZBW CTLR EXPERIENCED OPERROR AT 15000 FT WHEN ACTIONS TAKEN TO RESOLVE AN OVERTAKE SIT WERE TOO LATE TO BE EFFECTIVE.
Narrative: I WAS MONITORING THE SPD OF THE ACFT AS THEY CLBED TO 15000 FT AND LEVELED. I NOTICED THE SECOND ACFT'S SPD INCREASE AND I TRIED TO SLOW HIM DOWN. I ALSO DSNDED THE FIRST ACFT AND TRIED TO USE VISUAL SEPARATION. JUST NOT IN TIME TO MAINTAIN 5 MI.
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.