IFR aircraft released and departed uncontrolled airport while another aircraft was on approach.

Attributes
ACN	106963
Time
Date	198903
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : cbe
State Reference	MD
Altitude	agl bound lower : 0 agl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Dawn
Aircraft 1
Controlling Facilities	artcc : zob
Operator	common carrier : air taxi
Make Model Name	Light Transport, High Wing, 2 Turboprop Eng
Flight Phase	descent : approach
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Recip Eng
Flight Phase	climbout : intermediate altitude
Route In Use	departure other
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	controller : flight data
Qualification	controller : radar
ASRS Report	106963
Person 2
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	atc equipment other atc equipment : unspecified other controllera
Resolutory Action	none taken : insufficient time
Consequence	faa : investigated
Miss Distance	horizontal : 6000 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Intra Facility Coordination Failure Operational Error

Narrative:

4 low sectors combined in a midnight confign. I was working the data position for both the high and low altitude sectors. The radar controller at the low altitude sector cleared light transport for an approach at cbe. A few mins later mrb FSS called for a clearance off of cbe on small transport. Unaware of the approach, I issued the departure clearance. No evasive action was required.

Original NASA ASRS Text

Title: IFR ACFT RELEASED AND DEPARTED UNCONTROLLED ARPT WHILE ANOTHER ACFT WAS ON APCH.

Narrative: 4 LOW SECTORS COMBINED IN A MIDNIGHT CONFIGN. I WAS WORKING THE DATA POS FOR BOTH THE HIGH AND LOW ALT SECTORS. THE RADAR CTLR AT THE LOW ALT SECTOR CLRED LTT FOR AN APCH AT CBE. A FEW MINS LATER MRB FSS CALLED FOR A CLRNC OFF OF CBE ON SMT. UNAWARE OF THE APCH, I ISSUED THE DEP CLRNC. NO EVASIVE ACTION WAS REQUIRED.

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.