B757 began to enter runway by taking another aircraft's clearance.

Attributes
ACN	349469
Time
Date	199610
Day	Mon
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mia
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zme
Operator	common carrier : air carrier
Make Model Name	B757 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
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
ASRS Report	349469
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
ASRS Report	349470
Events
Anomaly	incursion : runway non adherence : far non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Cleared into position and hold runway 27R mia. First officer acknowledged. Turned on taxi light and began to move forward when I noticed a business jet taking the runway from the opposite taxiway facing us so I stopped immediately and had the first officer verify our clearance. The other aircraft was correct. Tower asked if we had crossed the hold short line which we had by about 5 ft. As we were not interfering with the business jet's takeoff, tower let us stay where we were and we departed after the business jet. Call signs were similar and the first officer's confirmation of the original clearance must have been exactly on top of the business jet's readback, as tower did not catch our mistake.

Original NASA ASRS Text

Title: B757 BEGAN TO ENTER RWY BY TAKING ANOTHER ACFT'S CLRNC.

Narrative: CLRED INTO POS AND HOLD RWY 27R MIA. FO ACKNOWLEDGED. TURNED ON TAXI LIGHT AND BEGAN TO MOVE FORWARD WHEN I NOTICED A BUSINESS JET TAKING THE RWY FROM THE OPPOSITE TXWY FACING US SO I STOPPED IMMEDIATELY AND HAD THE FO VERIFY OUR CLRNC. THE OTHER ACFT WAS CORRECT. TWR ASKED IF WE HAD CROSSED THE HOLD SHORT LINE WHICH WE HAD BY ABOUT 5 FT. AS WE WERE NOT INTERFERING WITH THE BUSINESS JET'S TKOF, TWR LET US STAY WHERE WE WERE AND WE DEPARTED AFTER THE BUSINESS JET. CALL SIGNS WERE SIMILAR AND THE FO'S CONFIRMATION OF THE ORIGINAL CLRNC MUST HAVE BEEN EXACTLY ON TOP OF THE BUSINESS JET'S READBACK, AS TWR DID NOT CATCH OUR MISTAKE.

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.