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TRACON approach controller frequency usurped by other government, non coordination interdiction action. Some control clrncs delayed due to non coordination activity. Controller asks 'spotter' to use another frequency.
| Attributes | |
| ACN | 410945 |
| Time | |
| Date | 199808 |
| Day | Wed |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : vny |
| State Reference | CA |
| Altitude | msl bound lower : 3500 msl bound upper : 8500 |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : bur |
| Operator | other |
| Make Model Name | Helicopter |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Aircraft 2 | |
| Operator | other |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 91 |
| Flight Phase | cruise other |
| Flight Plan | VFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| Experience | controller non radar : 10 controller radar : 12 |
| ASRS Report | 410945 |
| Person 2 | |
| Affiliation | government other |
| Function | flight crew : single pilot |
| Qualification | pilot : instrument pilot : commercial |
| Events | |
| Anomaly | non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | controller : issued new clearance other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Inter Facility Coordination Failure other |
Narrative:
A helicopter (interdiction aircraft) was on frequency being given advisories at 3500 ft. I observed 2 other aircraft in my airspace on discrete beacon codes of XXXA and XXXB. I was not in communications with either of these aircraft. These aircraft proceeded to and appeared to intercept aircraft on VFR (1200) codes. At this same time some aircraft (2 or more) began coordinating on my frequency (134.2), interfering and blocking critical xmissions, ie, turn on to final and descent clrncs. I asked helicopter if there were other interdiction aircraft. He said there were 3 good guys and 1 bad guy. I requested that they not use air traffic frequency for coordination. Nothing was pre-coordinated. I believe this to be an unsafe activity.
Original NASA ASRS Text
Title: TRACON APCH CTLR FREQ USURPED BY OTHER GOV, NON COORD INTERDICTION ACTION. SOME CTL CLRNCS DELAYED DUE TO NON COORD ACTIVITY. CTLR ASKS 'SPOTTER' TO USE ANOTHER FREQ.
Narrative: A HELI (INTERDICTION ACFT) WAS ON FREQ BEING GIVEN ADVISORIES AT 3500 FT. I OBSERVED 2 OTHER ACFT IN MY AIRSPACE ON DISCRETE BEACON CODES OF XXXA AND XXXB. I WAS NOT IN COMS WITH EITHER OF THESE ACFT. THESE ACFT PROCEEDED TO AND APPEARED TO INTERCEPT ACFT ON VFR (1200) CODES. AT THIS SAME TIME SOME ACFT (2 OR MORE) BEGAN COORDINATING ON MY FREQ (134.2), INTERFERING AND BLOCKING CRITICAL XMISSIONS, IE, TURN ON TO FINAL AND DSCNT CLRNCS. I ASKED HELI IF THERE WERE OTHER INTERDICTION ACFT. HE SAID THERE WERE 3 GOOD GUYS AND 1 BAD GUY. I REQUESTED THAT THEY NOT USE AIR TFC FREQ FOR COORD. NOTHING WAS PRE-COORDINATED. I BELIEVE THIS TO BE AN UNSAFE ACTIVITY.
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.