Clearance interpretation acknowledged readback causes unauthorized runway entry operation.

Attributes
ACN	260302
Time
Date	199312
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : mco
State Reference	FL
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	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	ground : holding ground other : taxi
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach landing : go around
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 100 flight time total : 11000 flight time type : 125
ASRS Report	260302
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	incursion : runway non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued new clearance other other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Mco tower cleared flight into position on runway 36R. Read back clearance by myself (first officer). Taxied into position on runway 36R. Moments later, another aircraft advised tower of aircraft on his landing runway 36R. Mco tower told aircraft to go around. Tower then advised he had cleared us to cross runway 36R and position and hold on runway 36L. We believed we acknowledged position and hold on runway 36R.

Original NASA ASRS Text

Title: CLRNC INTERP ACKNOWLEDGED READBACK CAUSES UNAUTH RWY ENTRY OP.

Narrative: MCO TWR CLRED FLT INTO POS ON RWY 36R. READ BACK CLRNC BY MYSELF (FO). TAXIED INTO POS ON RWY 36R. MOMENTS LATER, ANOTHER ACFT ADVISED TWR OF ACFT ON HIS LNDG RWY 36R. MCO TWR TOLD ACFT TO GAR. TWR THEN ADVISED HE HAD CLRED US TO CROSS RWY 36R AND POS AND HOLD ON RWY 36L. WE BELIEVED WE ACKNOWLEDGED POS AND HOLD ON RWY 36R.

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.