Private aircraft entered tower airspace without coordination by reporter.

Attributes
ACN	399491
Time
Date	199804
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : den airport : bjc
State Reference	CO
Altitude	msl bound lower : 8000 msl bound upper : 8000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : den tower : den
Operator	general aviation : personal
Make Model Name	Cessna Aircraft Undifferentiated or Other Model
Operating Under FAR Part	Part 91
Flight Phase	cruise other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
Experience	controller non radar : 3 controller radar : 10
ASRS Report	399491
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : radar
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Deviation

Narrative:

Working approach at den I had an IFR C303 on a wbound heading towards bjc where he was landing. This aircraft clipped the extreme northwest corner of den tower's airspace without coordination. We were landing south at den. This airspace has been idented as a 'trap' numerous times in suggestions written to fix it. A new LOA between approach and tower was written to correct this. We were briefed on it, and the LOA never went into effect for whatever reason. The tower cannot even use this airspace without going through approach airspace. This needs to be fixed.

Original NASA ASRS Text

Title: PVT ACFT ENTERED TWR AIRSPACE WITHOUT COORD BY RPTR.

Narrative: WORKING APCH AT DEN I HAD AN IFR C303 ON A WBOUND HDG TOWARDS BJC WHERE HE WAS LNDG. THIS ACFT CLIPPED THE EXTREME NW CORNER OF DEN TWR'S AIRSPACE WITHOUT COORD. WE WERE LNDG S AT DEN. THIS AIRSPACE HAS BEEN IDENTED AS A 'TRAP' NUMEROUS TIMES IN SUGGESTIONS WRITTEN TO FIX IT. A NEW LOA BTWN APCH AND TWR WAS WRITTEN TO CORRECT THIS. WE WERE BRIEFED ON IT, AND THE LOA NEVER WENT INTO EFFECT FOR WHATEVER REASON. THE TWR CANNOT EVEN USE THIS AIRSPACE WITHOUT GOING THROUGH APCH AIRSPACE. THIS NEEDS TO BE FIXED.

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.