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Reporter observed a possible traffic situation and issued traffic to an air carrier ATR42 on an unknown aircraft 8 mi away. The reporter issued a TA to the aircraft in descent. The ATR42 received a TCASII RA and climbed. The unknown aircraft was idented by the ATR42 as a G2. Reporter claimed the same unknown aircraft had been a factor for another air carrier of the same company.
| Attributes | |
| ACN | 354339 |
| Time | |
| Date | 199611 |
| Day | Tue |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | atc facility : iah |
| State Reference | TX |
| Altitude | msl bound lower : 13200 msl bound upper : 13200 |
| Environment | |
| Flight Conditions | VMC |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | artcc : zhu |
| Operator | common carrier : air carrier |
| Make Model Name | ATR 42 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | descent other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | Gulfstream II |
| Operating Under FAR Part | Part 91 |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar |
| Qualification | controller : radar pilot : private |
| Experience | controller radar : 10 flight time total : 1500 |
| ASRS Report | 354339 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : unspecified other controllera |
| Resolutory Action | other other |
| Consequence | Other |
| Miss Distance | horizontal : 0 vertical : 500 |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
I was working ATR42 in the arrival sector into houston and saw a possible situation develop. I issued traffic to the ATR42 and the unknown traffic 8 mi apart. When I scanned the scope again, the unknown aircraft was climbing and the ATR42 was descending. I issued a safety alert to the air carrier and he stated shortly that he received an RA and was climbing. This situation is totally preventable if unknown aircraft would use VFR flight following or at least monitor our frequencys. The unknown aircraft departed the houston area class B airspace through an arrival gate. The sectional charts or TCA charts clearly indicate the arrival rtes that a safety conscious pilot should avoid. This particular aircraft had moments earlier been a factor with another air carrier aircraft. As these 2 aircraft passed, I asked the pilot what type aircraft it appeared to be and he said it was a citation ii. This type of situation has happened before and if changes are not made will continue in the future. The G2 flies in the houston area daily and know or should know where the busy arrival fixes are.
Original NASA ASRS Text
Title: RPTR OBSERVED A POSSIBLE TFC SIT AND ISSUED TFC TO AN ACR ATR42 ON AN UNKNOWN ACFT 8 MI AWAY. THE RPTR ISSUED A TA TO THE ACFT IN DSCNT. THE ATR42 RECEIVED A TCASII RA AND CLBED. THE UNKNOWN ACFT WAS IDENTED BY THE ATR42 AS A G2. RPTR CLAIMED THE SAME UNKNOWN ACFT HAD BEEN A FACTOR FOR ANOTHER ACR OF THE SAME COMPANY.
Narrative: I WAS WORKING ATR42 IN THE ARR SECTOR INTO HOUSTON AND SAW A POSSIBLE SIT DEVELOP. I ISSUED TFC TO THE ATR42 AND THE UNKNOWN TFC 8 MI APART. WHEN I SCANNED THE SCOPE AGAIN, THE UNKNOWN ACFT WAS CLBING AND THE ATR42 WAS DSNDING. I ISSUED A SAFETY ALERT TO THE ACR AND HE STATED SHORTLY THAT HE RECEIVED AN RA AND WAS CLBING. THIS SIT IS TOTALLY PREVENTABLE IF UNKNOWN ACFT WOULD USE VFR FLT FOLLOWING OR AT LEAST MONITOR OUR FREQS. THE UNKNOWN ACFT DEPARTED THE HOUSTON AREA CLASS B AIRSPACE THROUGH AN ARR GATE. THE SECTIONAL CHARTS OR TCA CHARTS CLRLY INDICATE THE ARR RTES THAT A SAFETY CONSCIOUS PLT SHOULD AVOID. THIS PARTICULAR ACFT HAD MOMENTS EARLIER BEEN A FACTOR WITH ANOTHER ACR ACFT. AS THESE 2 ACFT PASSED, I ASKED THE PLT WHAT TYPE ACFT IT APPEARED TO BE AND HE SAID IT WAS A CITATION II. THIS TYPE OF SIT HAS HAPPENED BEFORE AND IF CHANGES ARE NOT MADE WILL CONTINUE IN THE FUTURE. THE G2 FLIES IN THE HOUSTON AREA DAILY AND KNOW OR SHOULD KNOW WHERE THE BUSY ARR FIXES ARE.
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.