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I90 controller experienced operational error at 4000 ft between a departure climbing to 5000 ft and traffic level at 4000 ft when failing to observe actual altitude.
| Attributes | |
| ACN | 672065 |
| Time | |
| Date | 200509 |
| Place | |
| Locale Reference | airport : iah.airport |
| State Reference | TX |
| Altitude | msl single value : 4000 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : i90.tracon |
| Operator | general aviation : personal |
| Make Model Name | PC-12 |
| Operating Under FAR Part | Part 91 |
| Flight Phase | climbout : initial |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : i90.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | EMB ERJ 145 ER&LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | departure : on vectors |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller radar : 23 flight time total : 500 |
| ASRS Report | 672065 |
| Person 2 | |
| Affiliation | other |
| Function | flight crew : single pilot |
| Events | |
| Anomaly | conflict : airborne critical non adherence : required legal separation |
| Independent Detector | other controllera |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 3000 vertical : 0 |
| Supplementary | |
| Problem Areas | ATC Human Performance |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error |
Narrative:
I was working departure north low sector at houston approach. I climbed a PC12 aircraft from 3000 ft to 5000 ft prior to entering my airspace. This aircraft was on a 040 degree vector; and while in the climb; narrowly missed an E145; who was level at 4000 ft. The E145 was on a tower assigned heading; on departure north frequency; 15 NM northwest of iah. I was aware of the E145; but I did not observe his altitude until the 2 aircraft had passed; not expecting him to still be at 4000 ft so far from iah.
Original NASA ASRS Text
Title: I90 CTLR EXPERIENCED OPERROR AT 4000 FT BTWN A DEP CLBING TO 5000 FT AND TFC LEVEL AT 4000 FT WHEN FAILING TO OBSERVE ACTUAL ALT.
Narrative: I WAS WORKING DEP N LOW SECTOR AT HOUSTON APCH. I CLBED A PC12 ACFT FROM 3000 FT TO 5000 FT PRIOR TO ENTERING MY AIRSPACE. THIS ACFT WAS ON A 040 DEG VECTOR; AND WHILE IN THE CLB; NARROWLY MISSED AN E145; WHO WAS LEVEL AT 4000 FT. THE E145 WAS ON A TWR ASSIGNED HDG; ON DEP N FREQ; 15 NM NW OF IAH. I WAS AWARE OF THE E145; BUT I DID NOT OBSERVE HIS ALT UNTIL THE 2 ACFT HAD PASSED; NOT EXPECTING HIM TO STILL BE AT 4000 FT SO FAR FROM IAH.
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.