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ZBW controller issued clearance causing conflict; attempted to correct the instruction but was unable due to time factor and radio difficulties.
| Attributes | |
| ACN | 665642 |
| Time | |
| Date | 200507 |
| Place | |
| Locale Reference | navaid : ene.vortac |
| State Reference | ME |
| Altitude | msl single value : 12000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | other |
| Make Model Name | IAI1125 (Astra) |
| Operating Under FAR Part | Part 91 |
| Flight Phase | descent : intermediate altitude |
| Route In Use | arrival : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zbw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | Saab-Scania Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | cruise : level |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : developmental |
| Experience | controller non radar : 1.5 controller time certified in position1 : 0.75 |
| ASRS Report | 665642 |
| Person 2 | |
| Affiliation | government : military |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance flight crew : overrode automation flight crew : took evasive action |
| Miss Distance | horizontal : 23760 vertical : 700 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Pwm approach called requesting control of the astr going to nhz to get around some traffic wanted on a 120 degree heading. I advised radar controller who put the astr on the heading then immediately corrected to maintain present heading. Thought astr acknowledged present heading instruction when a click/broken transmission was heard due to an ongoing frequency problem at the sector. Saw aircraft in the original turn towards SF34 at 12000 ft. Radar controller issued expedite descent to avoid SF34.
Original NASA ASRS Text
Title: ZBW CTLR ISSUED CLRNC CAUSING CONFLICT; ATTEMPTED TO CORRECT THE INSTRUCTION BUT WAS UNABLE DUE TO TIME FACTOR AND RADIO DIFFICULTIES.
Narrative: PWM APCH CALLED REQUESTING CTL OF THE ASTR GOING TO NHZ TO GET AROUND SOME TFC WANTED ON A 120 DEG HDG. I ADVISED RADAR CTLR WHO PUT THE ASTR ON THE HDG THEN IMMEDIATELY CORRECTED TO MAINTAIN PRESENT HDG. THOUGHT ASTR ACKNOWLEDGED PRESENT HDG INSTRUCTION WHEN A CLICK/BROKEN XMISSION WAS HEARD DUE TO AN ONGOING FREQ PROB AT THE SECTOR. SAW ACFT IN THE ORIGINAL TURN TOWARDS SF34 AT 12000 FT. RADAR CTLR ISSUED EXPEDITE DSCNT TO AVOID SF34.
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.