Small transport penetrated adjacent facility airspace without prior coordination or approval.

Attributes
ACN	109382
Time
Date	198904
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : stl
State Reference	MO
Altitude	msl bound lower : 4000 msl bound upper : 4000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zkc
Operator	general aviation : personal
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	descent other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : radar
Qualification	controller : radar
ASRS Report	109382
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

Recently ZKC adopted a computer patch that displays a letter in the data block that indicates the aircraft's destination. It is very confusing to the controller. I was working an small transport from jef-stl and gave the aircraft a crossing restriction of 45 west stl at 40 (per LOA). I observed the letter 'south' in the data block and interpreted it as a handoff that was completed to stl. Then I changed the small transport over the stl controller's frequency. The aircraft was about 5 mi inside their airspace and on their frequency when the stl controller notified us. I recommend that this feature be adapted so that it can be removed at the controller's discretion.

Original NASA ASRS Text

Title: SMT PENETRATED ADJACENT FAC AIRSPACE WITHOUT PRIOR COORD OR APPROVAL.

Narrative: RECENTLY ZKC ADOPTED A COMPUTER PATCH THAT DISPLAYS A LETTER IN THE DATA BLOCK THAT INDICATES THE ACFT'S DEST. IT IS VERY CONFUSING TO THE CTLR. I WAS WORKING AN SMT FROM JEF-STL AND GAVE THE ACFT A XING RESTRICTION OF 45 W STL AT 40 (PER LOA). I OBSERVED THE LETTER 'S' IN THE DATA BLOCK AND INTERPRETED IT AS A HDOF THAT WAS COMPLETED TO STL. THEN I CHANGED THE SMT OVER THE STL CTLR'S FREQ. THE ACFT WAS ABOUT 5 MI INSIDE THEIR AIRSPACE AND ON THEIR FREQ WHEN THE STL CTLR NOTIFIED US. I RECOMMEND THAT THIS FEATURE BE ADAPTED SO THAT IT CAN BE REMOVED AT THE CTLR'S DISCRETION.

Data retrieved from NASA's ASRS site as of August 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.