 |
37000 Feet | Browse and search NASA's Aviation Safety Reporting System |
|
ZBW controller experienced operational error at 110 during vector techniques for dfw arrival aircraft.
| Attributes | |
| ACN | 627880 |
| Time | |
| Date | 200408 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | navaid : cqy.vortac |
| State Reference | TX |
| Altitude | msl single value : 11000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | artcc : zfw.artcc tower : atl.tower |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Route In Use | arrival star : cqy |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | artcc : zfw.artcc |
| Operator | common carrier : air carrier |
| Make Model Name | B737 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent : approach descent : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar |
| Experience | controller military : 5 controller radar : 14 |
| ASRS Report | 627880 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation |
| Independent Detector | atc equipment : conflict alert other controllera |
| Resolutory Action | controller : issued alert |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 20300 vertical : 300 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
Aircraft #1 checked on and was issued a 5 degree right turn to join the CQY6 arrival and a restr to cross howdy at 110, the normal restr. Aircraft #2 checked on and was issued 110. Then several mins later, orvll at 90, the normal restr. I observed aircraft #1 descending at a rate that would cause him to level prior to howdy, and observed aircraft #2 leveling off at 110. I instructed aircraft #1 to maintain present altitude and instructed aircraft #2 to expedite his descent, but separation was lost.
Original NASA ASRS Text
Title: ZBW CTLR EXPERIENCED OPERROR AT 110 DURING VECTOR TECHNIQUES FOR DFW ARR ACFT.
Narrative: ACFT #1 CHKED ON AND WAS ISSUED A 5 DEG R TURN TO JOIN THE CQY6 ARR AND A RESTR TO CROSS HOWDY AT 110, THE NORMAL RESTR. ACFT #2 CHKED ON AND WAS ISSUED 110. THEN SEVERAL MINS LATER, ORVLL AT 90, THE NORMAL RESTR. I OBSERVED ACFT #1 DSNDING AT A RATE THAT WOULD CAUSE HIM TO LEVEL PRIOR TO HOWDY, AND OBSERVED ACFT #2 LEVELING OFF AT 110. I INSTRUCTED ACFT #1 TO MAINTAIN PRESENT ALT AND INSTRUCTED ACFT #2 TO EXPEDITE HIS DSCNT, BUT SEPARATION WAS LOST.
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.