<< >> NASA ASRS Report 95892, October 1988

Controller cleared an medium large transport into position on a runway on which an light transport was landing. Before aircraft could take runway, controller stopped the medium large transport before separation was lost.

Attributes
ACN	95892
Time
Date	198810
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ind
State Reference	IN
Altitude	msl bound lower : 797 msl bound upper : 2000
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	tower : ind
Operator	common carrier : air carrier
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	descent : approach landing other
Route In Use	arrival other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	ground : holding
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	95892
Person 2
Affiliation	government : faa
Function	controller : local
Qualification	controller : non radar
Events
Anomaly	other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

The local controller cleared medium large transport X onto runway 22R position and hold, traffic landing runway 31, us. Shortly thereafter, medium large transport Y that was holding short of runway 31 called ready. The controller responded in a confused manner mixing medium large transport Y and medium large transport X flts up. He began to clear medium large transport Y onto the runway in front of us. We were approximately 2 mi final. The controller realized his mistake after medium large transport X pilot reported holding in position on runway 22R. Medium large transport Y was then instructed to hold short of runway 31. The controller either lost his traffic picture, was distracted, or somehow became confused with only 3-4 airplanes under his control. This is becoming a daily occurrence.

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Original NASA ASRS Text

Title: CTLR CLEARED AN MLG INTO POSITION ON A RWY ON WHICH AN LTT WAS LNDG. BEFORE ACFT COULD TAKE RWY, CTLR STOPPED THE MLG BEFORE SEPARATION WAS LOST.

Narrative: THE LCL CTLR CLRED MLG X ONTO RWY 22R POS AND HOLD, TFC LNDG RWY 31, US. SHORTLY THEREAFTER, MLG Y THAT WAS HOLDING SHORT OF RWY 31 CALLED READY. THE CTLR RESPONDED IN A CONFUSED MANNER MIXING MLG Y AND MLG X FLTS UP. HE BEGAN TO CLR MLG Y ONTO THE RWY IN FRONT OF US. WE WERE APPROX 2 MI FINAL. THE CTLR REALIZED HIS MISTAKE AFTER MLG X PLT RPTED HOLDING IN POS ON RWY 22R. MLG Y WAS THEN INSTRUCTED TO HOLD SHORT OF RWY 31. THE CTLR EITHER LOST HIS TFC PICTURE, WAS DISTRACTED, OR SOMEHOW BECAME CONFUSED WITH ONLY 3-4 AIRPLANES UNDER HIS CTL. THIS IS BECOMING A DAILY OCCURRENCE.

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.