Mlt Y had airborne conflict with cpr X (analyst EST 3000' horizontal). See and avoid concept.

Attributes
ACN	165728
Time
Date	199012
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : mxf
State Reference	AL
Altitude	msl bound lower : 1700 msl bound upper : 1700
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mgm tower : mxf
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach descent other
Route In Use	approach : visual
Flight Plan	IFR
Aircraft 2
Operator	other
Make Model Name	Military Transport
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	government : faa
Function	controller : approach
Qualification	controller : radar
ASRS Report	165728
Person 2
Affiliation	government : military
Function	controller : local
Qualification	pilot : military
Events
Anomaly	conflict : airborne less severe other anomaly other
Independent Detector	other controllera
Resolutory Action	none taken : anomaly accepted
Consequence	Other
Miss Distance	horizontal : 3000
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Inter Facility Coordination Failure other

Narrative:

Do to the close proximity of maxwell AFB to montgomery airport (6 NM) as a controller I have to coordination frequency with maxwell tower to transition them air traffic area, with aircraft inbound to montgomery airport. On numerous occasions during the 2 1/2 yrs that I have been a controller at mgm RAPCON, I have witnessed potential mid-air collisions due to maxwell tower launching VFR traffic into aircraft that have already been approved to transition their air traffic area. On dec 1990 at approximately X am I got approval from maxwell tower to descend overhead mxf into montgomery airport with cpr X, small transport, from 3 NM north of mxf. When cpr X was 1 NM northeast of mxf I cleared him for the visibility approach to runway 27 and switched to mgm tower. 5 seconds later I observed a VFR mlt Y climbing off mxf runway 15 right into the flight path of cpr X. This type of scenario happens quite frequently.

Original NASA ASRS Text

Title: MLT Y HAD AIRBORNE CONFLICT WITH CPR X (ANALYST EST 3000' HORIZ). SEE AND AVOID CONCEPT.

Narrative: DO TO THE CLOSE PROX OF MAXWELL AFB TO MONTGOMERY ARPT (6 NM) AS A CTLR I HAVE TO COORD FREQ WITH MAXWELL TWR TO TRANSITION THEM ATA, WITH ACFT INBND TO MONTGOMERY ARPT. ON NUMEROUS OCCASIONS DURING THE 2 1/2 YRS THAT I HAVE BEEN A CTLR AT MGM RAPCON, I HAVE WITNESSED POTENTIAL MID-AIR COLLISIONS DUE TO MAXWELL TWR LAUNCHING VFR TFC INTO ACFT THAT HAVE ALREADY BEEN APPROVED TO TRANSITION THEIR ATA. ON DEC 1990 AT APPROX X AM I GOT APPROVAL FROM MAXWELL TWR TO DSND OVERHEAD MXF INTO MONTGOMERY ARPT WITH CPR X, SMT, FROM 3 NM N OF MXF. WHEN CPR X WAS 1 NM NE OF MXF I CLRED HIM FOR THE VIS APCH TO RWY 27 AND SWITCHED TO MGM TWR. 5 SECS LATER I OBSERVED A VFR MLT Y CLBING OFF MXF RWY 15 R INTO THE FLT PATH OF CPR X. THIS TYPE OF SCENARIO HAPPENS QUITE FREQUENTLY.

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.