Commercial power failed. Controllers had to use emergency transceivers.

Attributes
ACN	176527
Time
Date	199104
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : rvs
State Reference	OK
Environment
Flight Conditions	VMC
Light	Daylight
Person 1
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
ASRS Report	176527
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Air Traffic Incident	other

Narrative:

At xx:05Z commercial power failure rendered the icss system unusable. Edo aire backup transmitters where utilized for local control lcw (120.2) and ground control (121.7). Frequency interference on both transmitters rendered both edo aire's unusable. In order to communication, the lcw and ground control positions had to alternate xmissions. 'Bleed over' was also expected from aircraft xmissions.

Original NASA ASRS Text

Title: COMMERCIAL POWER FAILED. CTLRS HAD TO USE EMERGENCY TRANSCEIVERS.

Narrative: AT XX:05Z COMMERCIAL PWR FAILURE RENDERED THE ICSS SYS UNUSABLE. EDO AIRE BACKUP XMITTERS WHERE UTILIZED FOR LCL CTL LCW (120.2) AND GND CTL (121.7). FREQ INTERFERENCE ON BOTH XMITTERS RENDERED BOTH EDO AIRE'S UNUSABLE. IN ORDER TO COM, THE LCW AND GND CTL POSITIONS HAD TO ALTERNATE XMISSIONS. 'BLEED OVER' WAS ALSO EXPECTED FROM ACFT XMISSIONS.

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.