Air carrier received clearance for immediate takeoff, but remainder of ATC transmission was blocked. Departure controller queried flight crew regarding assigned heading.

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Attributes
ACN	302790
Time
Date	199504
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : ord
State Reference	IL
Altitude	msl bound lower : 1500 msl bound upper : 1500
Environment
Flight Conditions	IMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : ord
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : initial
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 175 flight time total : 12000
ASRS Report	302790
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
ASRS Report	302786
Events
Anomaly	non adherence : clearance other anomaly other other spatial deviation
Independent Detector	other controllera
Resolutory Action	other
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	other

Narrative:

With an aircraft just turning off the active runway and an aircraft on short final the tower cleared us for an immediate takeoff no delay - but part of the transmission was blocked by another aircraft. On departure control, ATC asked if we had been given a turn, our reply was that the transmission was blocked and that the tower was extremely busy with aircraft on the runway and one on short final. No conflicts during the event! Supplemental information from acn 302786: ATC cleared flight # for takeoff runway 09R traffic on short final, no delay. After contacting departure ATC asked if tower had given us a 180 degree heading we replied that tower was quite busy and we did not hear it or was blocked by an aircraft calling short final.

Original NASA ASRS Text

Title: ACR RECEIVED CLRNC FOR IMMEDIATE TKOF, BUT REMAINDER OF ATC XMISSION WAS BLOCKED. DEP CTLR QUERIED FLC REGARDING ASSIGNED HDG.

Narrative: WITH AN ACFT JUST TURNING OFF THE ACTIVE RWY AND AN ACFT ON SHORT FINAL THE TWR CLRED US FOR AN IMMEDIATE TKOF NO DELAY - BUT PART OF THE XMISSION WAS BLOCKED BY ANOTHER ACFT. ON DEP CTL, ATC ASKED IF WE HAD BEEN GIVEN A TURN, OUR REPLY WAS THAT THE XMISSION WAS BLOCKED AND THAT THE TWR WAS EXTREMELY BUSY WITH ACFT ON THE RWY AND ONE ON SHORT FINAL. NO CONFLICTS DURING THE EVENT! SUPPLEMENTAL INFO FROM ACN 302786: ATC CLRED FLT # FOR TKOF RWY 09R TFC ON SHORT FINAL, NO DELAY. AFTER CONTACTING DEP ATC ASKED IF TWR HAD GIVEN US A 180 DEG HDG WE REPLIED THAT TWR WAS QUITE BUSY AND WE DID NOT HEAR IT OR WAS BLOCKED BY AN ACFT CALLING SHORT FINAL.

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.