Radar equipment problem automatic handoff to approach control.

Attributes
ACN	189209
Time
Date	199109
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : evv
State Reference	IN
Altitude	msl bound lower : 10000 msl bound upper : 10000
Aircraft 1
Controlling Facilities	artcc : zid
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
Experience	controller radar : 3
ASRS Report	189209
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : unable
Consequence	Other
Supplementary
Primary Problem	Navigational Facility
Air Traffic Incident	other
Situations
Navigational Aid	Unspecified

Narrative:

The handoff parameters for ZID and evv and tth are incorrect. ATC is unable to initiate an automated handoff to either of these facilities outside of 3-5 mi from the boundaries. This is not enough distance to provide airspace separation if needed. The computer will also go into automatic handoff to these facilities and fail. No automated handoff can be made in a safe distance from these facilities. Normal distance for this type of procedure are 15- 30 mi. Jets traveling at 8 mi per min cannot be safely turned in the distance it travels in 40 seconds. Callback conversation with reporter revealed the following information: the reporter stated a ucr had been filed on this condition. Facility management reply was that tth approach control and evv approach control are at the limits of their radar coverage and nothing can be done. Reporter feels this could lead to unauthorized uncoord airspace entry.

Original NASA ASRS Text

Title: RADAR EQUIP PROBLEM AUTO HDOF TO APCH CTL.

Narrative: THE HDOF PARAMETERS FOR ZID AND EVV AND TTH ARE INCORRECT. ATC IS UNABLE TO INITIATE AN AUTOMATED HDOF TO EITHER OF THESE FACILITIES OUTSIDE OF 3-5 MI FROM THE BOUNDARIES. THIS IS NOT ENOUGH DISTANCE TO PROVIDE AIRSPACE SEPARATION IF NEEDED. THE COMPUTER WILL ALSO GO INTO AUTO HDOF TO THESE FACILITIES AND FAIL. NO AUTOMATED HDOF CAN BE MADE IN A SAFE DISTANCE FROM THESE FACILITIES. NORMAL DISTANCE FOR THIS TYPE OF PROC ARE 15- 30 MI. JETS TRAVELING AT 8 MI PER MIN CANNOT BE SAFELY TURNED IN THE DISTANCE IT TRAVELS IN 40 SECONDS. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED A UCR HAD BEEN FILED ON THIS CONDITION. FACILITY MGMNT REPLY WAS THAT TTH APCH CTL AND EVV APCH CTL ARE AT THE LIMITS OF THEIR RADAR COVERAGE AND NOTHING CAN BE DONE. RPTR FEELS THIS COULD LEAD TO UNAUTHORIZED UNCOORD AIRSPACE ENTRY.

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.