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Sct TRACON controller reported an aircraft restricted to 6;000 feet received a TCAS/RA and climbed for a VFR aircraft above it at 6;500 feet.
| Attributes | |
| ACN | 1507547 |
| Time | |
| Date | 201712 |
| Local Time Of Day | 0601-1200 |
| Place | |
| Locale Reference | SCT.TRACON |
| State Reference | CA |
| Environment | |
| Flight Conditions | VMC |
| Aircraft 1 | |
| Make Model Name | EMB ERJ 135 ER/LR |
| Operating Under FAR Part | Part 121 |
| Flight Phase | Initial Climb |
| Route In Use | Vectors |
| Flight Plan | IFR |
| Aircraft 2 | |
| Make Model Name | PA-28 Cherokee/Archer/Dakota/Pillan/Warrior |
| Operating Under FAR Part | Part 91 |
| Flight Phase | Cruise |
| Flight Plan | VFR |
| Person 1 | |
| Function | Approach Instructor |
| Qualification | Air Traffic Control Fully Certified |
| Experience | Air Traffic Control Time Certified In Pos 1 (yrs) 11 |
| Events | |
| Anomaly | ATC Issue All Types Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance |
Narrative:
I was the on job training instructor. The embraer 135 (E135) was on a heading of 340 level at 6000 feet. A PA-28 was enroute westbound at 6500 feet. My trainee issued traffic to both aircraft. The PA-28 reported the E135 in sight; when the E135 was approximately 1 mile south of the PA-28 we observed E135's mode C was reading 200 feet high. The trainee asked the E135 to verify level at 6000 feet. During this transmission; the E135 indicated climbing through 6300 feet. The E135 advised they were responding to an RA and they climbed through 6500 feet. After the aircraft had passed; I asked the E135 to verify they received a climb RA for the PA-28 above them. The E135 responded affirmative. There was no observed traffic below the E135 in their vicinity.I advised the trainee that in this situation an immediate traffic alert would have been more appropriate than questioning the pilot. In this case; the TCAS did the opposite of what it should have done. This information should be forwarded to whomever is responsible for looking into TCAS errors.
Original NASA ASRS Text
Title: SCT TRACON Controller reported an aircraft restricted to 6;000 feet received a TCAS/RA and climbed for a VFR aircraft above it at 6;500 feet.
Narrative: I was the On Job Training Instructor. The Embraer 135 (E135) was on a heading of 340 level at 6000 feet. A PA-28 was enroute westbound at 6500 feet. My trainee issued traffic to both aircraft. The PA-28 reported the E135 in sight; when the E135 was approximately 1 mile south of the PA-28 we observed E135's mode C was reading 200 feet high. The trainee asked the E135 to verify level at 6000 feet. During this transmission; the E135 indicated climbing through 6300 feet. The E135 advised they were responding to an RA and they climbed through 6500 feet. After the aircraft had passed; I asked the E135 to verify they received a climb RA for the PA-28 above them. The E135 responded affirmative. There was no observed traffic below the E135 in their vicinity.I advised the trainee that in this situation an immediate traffic alert would have been more appropriate than questioning the pilot. In this case; the TCAS did the opposite of what it should have done. This information should be forwarded to whomever is responsible for looking into TCAS errors.
Data retrieved from NASA's ASRS site 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.