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Frequency outage occurs resulting in less than standard separation between 2 air carrier's. Controller charged with system error.
| Attributes | |
| ACN | 205395 |
| Time | |
| Date | 199203 |
| Day | Mon |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : dtw |
| State Reference | MI |
| Aircraft 1 | |
| Controlling Facilities | tracon : dtw |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Aircraft 2 | |
| Operator | common carrier : air carrier |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Route In Use | arrival other |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : approach |
| Qualification | controller : radar |
| ASRS Report | 205395 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Events | |
| Anomaly | conflict : airborne less severe non adherence : required legal separation non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Consequence | faa : investigated |
| Miss Distance | horizontal : 12000 vertical : 0 |
| Supplementary | |
| Primary Problem | ATC Human Performance |
| Air Traffic Incident | Operational Error other |
| Situations | |
| ATC Facility | other physical facility |
Narrative:
Recently a los of separation occurred between 2 air carrier jet aircraft. The frequency being used by approach control quit. An operational error occurred before communication could be reestablished. The loss of a radio frequency, at detroit metropolitan, is not an isolated incident. Almost daily, frequency problems arise rendering them useless. Attached is a partial list of frequency problems at detroit metropolitan. 2 unsatisfactory condition reports have been filed.
Original NASA ASRS Text
Title: FREQ OUTAGE OCCURS RESULTING IN LTSS BTWN 2 ACR'S. CTLR CHARGED WITH SYS ERROR.
Narrative: RECENTLY A LOS OF SEPARATION OCCURRED BTWN 2 ACR JET ACFT. THE FREQ BEING USED BY APCH CTL QUIT. AN OPERROR OCCURRED BEFORE COM COULD BE REESTABLISHED. THE LOSS OF A RADIO FREQ, AT DETROIT METRO, IS NOT AN ISOLATED INCIDENT. ALMOST DAILY, FREQ PROBLEMS ARISE RENDERING THEM USELESS. ATTACHED IS A PARTIAL LIST OF FREQ PROBLEMS AT DETROIT METRO. 2 UNSATISFACTORY CONDITION RPTS HAVE BEEN FILED.
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.