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Reporter states that maintenance technician performed maintenance on their equipment that disrupted their operation. No coordination was done beforehand that they were going to do this.
| Attributes | |
| ACN | 443904 |
| Time | |
| Date | 199907 |
| Day | Mon |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | atc facility : p50.tracon |
| State Reference | AZ |
| Altitude | agl single value : 0 |
| Environment | |
| Flight Conditions | Mixed |
| Light | Daylight |
| Person 1 | |
| Affiliation | government : faa |
| Function | controller : radar controller : departure controller : approach |
| Qualification | controller : radar pilot : instrument pilot : private |
| Experience | controller non radar : 13 controller radar : 5 controller time certified in position1 : 5 flight time total : 2300 |
| ASRS Report | 443904 |
| Person 2 | |
| Affiliation | government : faa |
| Function | maintenance : technician |
| Qualification | technician : repairman |
| Events | |
| Anomaly | maintenance problem : improper maintenance non adherence : published procedure other anomaly other |
| Independent Detector | other controllera |
| Resolutory Action | none taken : unable |
| Supplementary | |
| Problem Areas | Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
| Air Traffic Incident | Intra Facility Coordination Failure |
Narrative:
While working 7 air carrier departures, maintenance technicians disconnected the cable providing mapper video to my scope. This was not known or coordinated at the time. Departures at phx airport were stopped until the problem was corrected 5 mins later. Approximately 10 mins after that incident, technicians caused the ARTS data to scatter causing loss of data blocks and handoff capability.
Original NASA ASRS Text
Title: RPTR STATES THAT MAINT TECHNICIAN PERFORMED MAINT ON THEIR EQUIP THAT DISRUPTED THEIR OP. NO COORD WAS DONE BEFOREHAND THAT THEY WERE GOING TO DO THIS.
Narrative: WHILE WORKING 7 ACR DEPS, MAINT TECHNICIANS DISCONNECTED THE CABLE PROVIDING MAPPER VIDEO TO MY SCOPE. THIS WAS NOT KNOWN OR COORDINATED AT THE TIME. DEPS AT PHX ARPT WERE STOPPED UNTIL THE PROB WAS CORRECTED 5 MINS LATER. APPROX 10 MINS AFTER THAT INCIDENT, TECHNICIANS CAUSED THE ARTS DATA TO SCATTER CAUSING LOSS OF DATA BLOCKS AND HDOF CAPABILITY.
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.