Flight crew misinterpreted a hold short clearance and, instead, taxied into position and hold.

Attributes
ACN	490380
Time
Date	200010
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mke.airport
State Reference	WI
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : mke.tower
Operator	common carrier : air carrier
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi ground : position and hold
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tower : mke.tower
Make Model Name	DC-9 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : multi engine pilot : atp pilot : commercial pilot : flight engineer pilot : instrument
Experience	flight time last 90 days : 100 flight time total : 7000 flight time type : 5500
ASRS Report	490380
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	conflict : airborne less severe incursion : runway non adherence : clearance non adherence : company policies non adherence : published procedure
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance flight crew : executed go around
Supplementary
Problem Areas	Aircraft Flight Crew Human Performance ATC Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were following another DC9 taxiing out to runway 25L in milwaukee. That aircraft was cleared on to the runway and we were cleared to hold in position runway 25L. We read back position and hold runway 25L without a tower response. As we were lining up on the runway, the tower told us to hold short. We were in good position to clear the runway either left or right but the tower did not ask us to do anything, and canceled the landing clearance of an aircraft on final. Tower then cleared us for takeoff with no further comment.

Original NASA ASRS Text

Title: FLC MISINTERPRETED A HOLD SHORT CLRNC AND, INSTEAD, TAXIED INTO POS AND HOLD.

Narrative: WE WERE FOLLOWING ANOTHER DC9 TAXIING OUT TO RWY 25L IN MILWAUKEE. THAT ACFT WAS CLRED ON TO THE RWY AND WE WERE CLRED TO HOLD IN POS RWY 25L. WE READ BACK POS AND HOLD RWY 25L WITHOUT A TWR RESPONSE. AS WE WERE LINING UP ON THE RWY, THE TWR TOLD US TO HOLD SHORT. WE WERE IN GOOD POS TO CLR THE RWY EITHER L OR R BUT THE TWR DID NOT ASK US TO DO ANYTHING, AND CANCELED THE LNDG CLRNC OF AN ACFT ON FINAL. TWR THEN CLRED US FOR TKOF WITH NO FURTHER COMMENT.

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.