Radar local controller instructor encounters local controller communication failure when instructing when issuing a go around due to aircraft on short final with aircraft in position and hold on runway.

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Attributes
ACN	546778
Time
Date	200205
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : gfk.airport
State Reference	ND
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	climbout : takeoff
Aircraft 2
Controlling Facilities	tower : gfk.tower
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	landing : go around
Person 1
Affiliation	government : faa
Function	controller : local instruction : instructor
Qualification	controller : radar
Experience	controller limited radar : 9 controller non radar : 2 controller radar : 11 controller supervisory : 4 controller time certified in position1 : 8 controller time certified in position2 : 7
ASRS Report	546778
Person 2
Affiliation	government : faa
Function	instruction : trainee
Qualification	controller : radar
Events
Anomaly	conflict : ground critical other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance controller : separated traffic other
Consequence	other
Supplementary
Problem Areas	Navigational Facility FAA
Primary Problem	Navigational Facility

Narrative:

We have an old generation icss [integrated communication switching system]. It is due to be replaced in 2004. Our headset jack boxes are constantly failing. The airways facilities folks are doing a great job of trying to keep the system up and running, however, they are getting faulty equipment. There are times we actually 'propeller' our headset plugs at an angle so they maintain contact to be able to hear or transmit. I was training in our local 2 position and the developmental cleared a warrior for takeoff with a piper arrow on a 1/2 mi final. I made several attempts to abort the takeoff and/or send the P28R around. I was forced to use a hand set at clearance delivery to send the aircraft around. This is an occurrence that has happened 4 times involving different instructions and developmentals with various aircraft. Thankfully, none have resulted in anything serious, yet. This is a problem that could be solved with newer equipment.

Original NASA ASRS Text

Title: RADAR LCL CTLR INSTRUCTOR ENCOUNTERS LCL CTLR COM FAILURE WHEN INSTRUCTING WHEN ISSUING A GAR DUE TO ACFT ON SHORT FINAL WITH ACFT IN POS AND HOLD ON RWY.

Narrative: WE HAVE AN OLD GENERATION ICSS [INTEGRATED COM SWITCHING SYS]. IT IS DUE TO BE REPLACED IN 2004. OUR HEADSET JACK BOXES ARE CONSTANTLY FAILING. THE AIRWAYS FACILITIES FOLKS ARE DOING A GREAT JOB OF TRYING TO KEEP THE SYS UP AND RUNNING, HOWEVER, THEY ARE GETTING FAULTY EQUIP. THERE ARE TIMES WE ACTUALLY 'PROP' OUR HEADSET PLUGS AT AN ANGLE SO THEY MAINTAIN CONTACT TO BE ABLE TO HEAR OR XMIT. I WAS TRAINING IN OUR LCL 2 POS AND THE DEVELOPMENTAL CLRED A WARRIOR FOR TKOF WITH A PIPER ARROW ON A 1/2 MI FINAL. I MADE SEVERAL ATTEMPTS TO ABORT THE TKOF AND/OR SEND THE P28R AROUND. I WAS FORCED TO USE A HAND SET AT CLRNC DELIVERY TO SEND THE ACFT AROUND. THIS IS AN OCCURRENCE THAT HAS HAPPENED 4 TIMES INVOLVING DIFFERENT INSTRUCTIONS AND DEVELOPMENTALS WITH VARIOUS ACFT. THANKFULLY, NONE HAVE RESULTED IN ANYTHING SERIOUS, YET. THIS IS A PROB THAT COULD BE SOLVED WITH NEWER EQUIP.

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.