Loss of separation between landing carj and a B727 crossing the runway.

Attributes
ACN	396618
Time
Date	199803
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mia
Operator	common carrier : air carrier
Make Model Name	Challenger CL604
Operating Under FAR Part	Part 121
Flight Phase	descent : approach landing other
Route In Use	approach : visual arrival other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	government : faa
Function	instruction : instructor other personnel other
Qualification	controller : radar
Experience	controller radar : 5
ASRS Report	396618
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : developmental
Events
Anomaly	conflict : ground less severe non adherence : required legal separation non adherence : published procedure
Independent Detector	other other : unspecified
Resolutory Action	none taken : detected after the fact
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Operational Error

Narrative:

Training in progress on the local north position. The developmental cleared a carj to land on runway 12. The developmental cleared a B727 to cross runway 12 at taxiway V. When I observed the situation the carj was in close proximity to the ground and the B727 had not yet cleared runway 12.

Original NASA ASRS Text

Title: LOSS OF SEPARATION BTWN LNDG CARJ AND A B727 XING THE RWY.

Narrative: TRAINING IN PROGRESS ON THE LCL N POS. THE DEVELOPMENTAL CLRED A CARJ TO LAND ON RWY 12. THE DEVELOPMENTAL CLRED A B727 TO CROSS RWY 12 AT TXWY V. WHEN I OBSERVED THE SIT THE CARJ WAS IN CLOSE PROX TO THE GND AND THE B727 HAD NOT YET CLRED RWY 12.

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.