A B737-200 crew is cleared onto runway 12R at stl by tower controller. Another voice asks them if they had been given a 'hold short' clearance. Crew ponders if there was a clearance interpretation readback hearback problem.

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Attributes
ACN	349390
Time
Date	199610
Day	Sat
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : stl
State Reference	MO
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B737-200
Operating Under FAR Part	Part 121
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 5000
ASRS Report	349390
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 200 flight time total : 8600 flight time type : 4600
ASRS Report	349389
Events
Anomaly	other anomaly other
Independent Detector	other controllera other flight crewa
Resolutory Action	other other
Consequence	Other
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	other

Narrative:

As we were taxiing out to the departure end of runway 12R at st louis international the tower controller asked us if we were ready to go. We answered that we were ready and received clearance to position and hold and to expect a short delay before departure. We read back the clearance and taxied onto the runway. Then we heard a different controller come on the frequency and ask if we had received a clearance to hold short of the runway. We told him that we were cleared to position and hold. He then said to hold in position for departure and we were cleared for takeoff shortly thereafter. We were both certain of our initial clearance and found it quite disconcerting to receive contradictory clrncs just prior to takeoff. It sounded like there was a coordination problem in the tower since we heard 2 distinctly different voices coming from the tower.

Original NASA ASRS Text

Title: A B737-200 CREW IS CLRED ONTO RWY 12R AT STL BY TWR CTLR. ANOTHER VOICE ASKS THEM IF THEY HAD BEEN GIVEN A 'HOLD SHORT' CLRNC. CREW PONDERS IF THERE WAS A CLRNC INTERP READBACK HEARBACK PROB.

Narrative: AS WE WERE TAXIING OUT TO THE DEP END OF RWY 12R AT ST LOUIS INTL THE TWR CTLR ASKED US IF WE WERE READY TO GO. WE ANSWERED THAT WE WERE READY AND RECEIVED CLRNC TO POS AND HOLD AND TO EXPECT A SHORT DELAY BEFORE DEP. WE READ BACK THE CLRNC AND TAXIED ONTO THE RWY. THEN WE HEARD A DIFFERENT CTLR COME ON THE FREQ AND ASK IF WE HAD RECEIVED A CLRNC TO HOLD SHORT OF THE RWY. WE TOLD HIM THAT WE WERE CLRED TO POS AND HOLD. HE THEN SAID TO HOLD IN POS FOR DEP AND WE WERE CLRED FOR TKOF SHORTLY THEREAFTER. WE WERE BOTH CERTAIN OF OUR INITIAL CLRNC AND FOUND IT QUITE DISCONCERTING TO RECEIVE CONTRADICTORY CLRNCS JUST PRIOR TO TKOF. IT SOUNDED LIKE THERE WAS A COORD PROB IN THE TWR SINCE WE HEARD 2 DISTINCTLY DIFFERENT VOICES COMING FROM THE TWR.

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.