X loss of aircraft control taxiway excursion.

Attributes
ACN	265096
Time
Date	199403
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : stl
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Xingu EMB-121 All Series
Operating Under FAR Part	Part 121
Flight Phase	ground other : taxi
Flight Plan	None
Person 1
Affiliation	government : faa
Function	controller : ground
Qualification	controller : non radar
ASRS Report	265096
Person 2
Affiliation	company : air carrier
Function	other personnel other
Qualification	other other : other
Events
Anomaly	other anomaly other anomaly other
Independent Detector	other controllera
Resolutory Action	flight crew : declared emergency none taken : unable
Consequence	faa : investigated

Narrative:

I received a position briefing which included a falcon in the bravo pad. Shortly thereafter, brasilia X (maintenance aircraft) in the B pad called asking to go from the B pad to gate Y. I instructed X to hold short of runway 30R at taxiway B. I observed X moving off the B pad and then veered off into the grass. I informed the supervisor of this and asked X what the problem was and how we could provide assistance.

Original NASA ASRS Text

Title: X LOSS OF ACFT CTL TXWY EXCURSION.

Narrative: I RECEIVED A POS BRIEFING WHICH INCLUDED A FALCON IN THE BRAVO PAD. SHORTLY THEREAFTER, BRASILIA X (MAINT ACFT) IN THE B PAD CALLED ASKING TO GO FROM THE B PAD TO GATE Y. I INSTRUCTED X TO HOLD SHORT OF RWY 30R AT TXWY B. I OBSERVED X MOVING OFF THE B PAD AND THEN VEERED OFF INTO THE GRASS. I INFORMED THE SUPVR OF THIS AND ASKED X WHAT THE PROB WAS AND HOW WE COULD PROVIDE ASSISTANCE.

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.