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Aircraft Y climb through occupied altitude had less than standard separation from air carrier X. System error.
| Attributes | |
| ACN | 267835 |
| Time | |
| Date | 199404 |
| Day | Fri |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : iah |
| State Reference | TX |
| Altitude | msl bound lower : 12000 msl bound upper : 12000 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Brasilia EMB-120 All Series |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other |
| Flight Phase | cruise other |
| Route In Use | enroute : direct enroute airway : iah |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | general aviation : corporate |
| Make Model Name | Gulfstream II |
| Operating Under FAR Part | Part 91 |
| Navigation In Use | Other |
| Flight Phase | climbout : intermediate altitude |
| Route In Use | enroute : direct |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : cfi pilot : atp |
| Experience | flight time last 90 days : 210 flight time total : 25000 flight time type : 928 |
| ASRS Report | 267835 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : published procedure non adherence : required legal separation |
| Independent Detector | other flight crewa |
| Resolutory Action | none taken : anomaly accepted |
| Consequence | faa : investigated faa : reviewed incident with flight crew |
| Miss Distance | horizontal : 4000 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Deviation Operational Error |
Narrative:
Air carrier X having departed iah airport was level 12000 ft tracking V13 (humble VOR 207 degree radial) to intercept the 062 degree radial of victoria VOR. A gulfstream ii aircraft (from hobby airport) passed underneath from approximately 7 O'clock position toward 1 O'clock position. He was spotted below our right engine going away in a high rate of climb. As he passed through our altitude, he was estimated at 1/2 - 1 mi right of our aircraft. At this time I saw the aircraft going away at approximately a 35-40 degree heading right of our course. No report had been given to us of any traffic. Upon inquiring of the controller about the status of that aircraft, he had no good answer as to why he was cleared through our IFR altitude. It was requested by the controller that I give him a call on the ground at victoria, tx. I did so, and his explanation was that a different controller had the gulfstream ii than had us and they had not advised each other of the closeness of the 2 aircraft. I was also advised by the controller that he had talked to the gulfstream ii pilot and he had not even seen us at all.
Original NASA ASRS Text
Title: ACFT Y CLB THROUGH OCCUPIED ALT HAD LTSS FROM ACR X. SYS ERROR.
Narrative: ACR X HAVING DEPARTED IAH ARPT WAS LEVEL 12000 FT TRACKING V13 (HUMBLE VOR 207 DEG RADIAL) TO INTERCEPT THE 062 DEG RADIAL OF VICTORIA VOR. A GULFSTREAM II ACFT (FROM HOBBY ARPT) PASSED UNDERNEATH FROM APPROX 7 O'CLOCK POS TOWARD 1 O'CLOCK POS. HE WAS SPOTTED BELOW OUR R ENG GOING AWAY IN A HIGH RATE OF CLB. AS HE PASSED THROUGH OUR ALT, HE WAS ESTIMATED AT 1/2 - 1 MI R OF OUR ACFT. AT THIS TIME I SAW THE ACFT GOING AWAY AT APPROX A 35-40 DEG HDG R OF OUR COURSE. NO RPT HAD BEEN GIVEN TO US OF ANY TFC. UPON INQUIRING OF THE CTLR ABOUT THE STATUS OF THAT ACFT, HE HAD NO GOOD ANSWER AS TO WHY HE WAS CLRED THROUGH OUR IFR ALT. IT WAS REQUESTED BY THE CTLR THAT I GIVE HIM A CALL ON THE GND AT VICTORIA, TX. I DID SO, AND HIS EXPLANATION WAS THAT A DIFFERENT CTLR HAD THE GULFSTREAM II THAN HAD US AND THEY HAD NOT ADVISED EACH OTHER OF THE CLOSENESS OF THE 2 ACFT. I WAS ALSO ADVISED BY THE CTLR THAT HE HAD TALKED TO THE GULFSTREAM II PLT AND HE HAD NOT EVEN SEEN US AT ALL.
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.