Controller reported loss of safety data on 5 aircraft.

Attributes
ACN	332383
Time
Date	199603
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : lny
State Reference	HI
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zhn
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	332383
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
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:

Loss of safety data on the following: air carrier X 8 mi east lny VORTAC at XA44Z. Callback conversation with reporter revealed the following information: reporter stated the facility operates with a mosaic of multiple radar and beacon system. He clarified the safety data as being the aircraft data block and indicated that the coasting/drop off problem is not limited to a particular area. He indicated that in most cases of data block loss, the primary target was still displayed. The exceptions being small propeller aircraft. Reporter was not aware of any radar flight checks specifically for the purpose of determining beacon coverage for the coasting problem or any beacon channel changes made for the coasting problem. Reporter implied that the facility management was aware of the problem.

Original NASA ASRS Text

Title: CTLR RPTED LOSS OF SAFETY DATA ON 5 ACFT.

Narrative: LOSS OF SAFETY DATA ON THE FOLLOWING: ACR X 8 MI E LNY VORTAC AT XA44Z. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THE FACILITY OPERATES WITH A MOSAIC OF MULTIPLE RADAR AND BEACON SYS. HE CLARIFIED THE SAFETY DATA AS BEING THE ACFT DATA BLOCK AND INDICATED THAT THE COASTING/DROP OFF PROB IS NOT LIMITED TO A PARTICULAR AREA. HE INDICATED THAT IN MOST CASES OF DATA BLOCK LOSS, THE PRIMARY TARGET WAS STILL DISPLAYED. THE EXCEPTIONS BEING SMALL PROP ACFT. RPTR WAS NOT AWARE OF ANY RADAR FLT CHKS SPECIFICALLY FOR THE PURPOSE OF DETERMINING BEACON COVERAGE FOR THE COASTING PROB OR ANY BEACON CHANNEL CHANGES MADE FOR THE COASTING PROB. RPTR IMPLIED THAT THE FACILITY MGMNT WAS AWARE OF THE PROB.

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.