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Clt controller described radio failure event requiring a hold on departure traffic indicating this was a repeated radio problem.
| Attributes | |
| ACN | 740018 |
| Time | |
| Date | 200705 |
| Place | |
| Locale Reference | atc facility : clt.tracon |
| State Reference | NC |
| Environment | |
| Flight Conditions | VMC |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : clt.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Commercial Fixed Wing |
| Operating Under FAR Part | Part 121 |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Flight Plan | IFR |
| Aircraft 2 | |
| Controlling Facilities | tracon : clt.tracon |
| Operator | common carrier : charter |
| Make Model Name | Any Unknown or Unlisted Aircraft Manufacturer |
| Operating Under FAR Part | Part 135 |
| Flight Phase | climbout : initial climbout : intermediate altitude |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : departure |
| Qualification | controller : radar |
| Experience | controller military : 4 controller radar : 25 |
| ASRS Report | 740018 |
| Events | |
| Anomaly | other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : anomaly accepted |
| Supplementary | |
| Problem Areas | Maintenance Human Performance FAA |
| Primary Problem | FAA |
| Situations | |
| ATC Facility | communication equipment : clt.tracon |
Narrative:
While working the departure radar position for the first departure push; I had about 6-8 aircraft on frequency; when I made a control instruction; only to receive no modulation/backtone. I immediately stopped departures; so as to not compound my problems. The radios had failed. Clt had this problem about 2 weeks ago. I alerted the supervisor and went to the back-up radios; still trying to diagnose the exact problem. Several aircraft were delayed. After trying different combinations; we determined the main receiver had failed. Once we fixed that; then I believe the backup transmitter failed. We slowed departures again. Restricting the tower to 10 mi in trail; all the time working with the equivalent of a circuit breaker radio. The satellite position beside me also had a problem with one of their frequencys.
Original NASA ASRS Text
Title: CLT CTLR DESCRIBED RADIO FAILURE EVENT REQUIRING A HOLD ON DEP TFC INDICATING THIS WAS A REPEATED RADIO PROBLEM.
Narrative: WHILE WORKING THE DEP RADAR POS FOR THE FIRST DEP PUSH; I HAD ABOUT 6-8 ACFT ON FREQ; WHEN I MADE A CTL INSTRUCTION; ONLY TO RECEIVE NO MODULATION/BACKTONE. I IMMEDIATELY STOPPED DEPS; SO AS TO NOT COMPOUND MY PROBS. THE RADIOS HAD FAILED. CLT HAD THIS PROB ABOUT 2 WKS AGO. I ALERTED THE SUPVR AND WENT TO THE BACK-UP RADIOS; STILL TRYING TO DIAGNOSE THE EXACT PROB. SEVERAL ACFT WERE DELAYED. AFTER TRYING DIFFERENT COMBINATIONS; WE DETERMINED THE MAIN RECEIVER HAD FAILED. ONCE WE FIXED THAT; THEN I BELIEVE THE BACKUP XMITTER FAILED. WE SLOWED DEPS AGAIN. RESTRICTING THE TWR TO 10 MI IN TRAIL; ALL THE TIME WORKING WITH THE EQUIVALENT OF A CB RADIO. THE SATELLITE POS BESIDE ME ALSO HAD A PROB WITH ONE OF THEIR FREQS.
Data retrieved from NASA's ASRS site as of January 2009 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.