MD80 crew became concerned when they were cleared for takeoff and were on the roll, when at about 80...

Attributes
ACN	556021
Time
Date	200208
Day	Sat
Place
Locale Reference	airport : mia.airport
State Reference	FL
Altitude	agl single value : 0
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	MD-80 Super 80
Operating Under FAR Part	Part 121
Flight Phase	ground : takeoff roll
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
ASRS Report	556021
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Events
Anomaly	non adherence : published procedure other anomaly other
Independent Detector	other controllera other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance
Consequence	other
Supplementary
Problem Areas	ATC Human Performance
Primary Problem	ATC Human Performance

Narrative:

Typical mia summer thunderstorm evening. Lots of ground stops and airport flow turnarounds. We were not involved in any of that, but the controllers seemed overwhelmed when we taxied in on the turnaround. We were cleared for takeoff, checklist completed and verified. At around 80 KTS, the controller cleared us for takeoff again. I was PNF and acknowledged 'previously cleared, on the roll.' there was no further communication. After clean-up, we went over the situation and both of us clearly heard our flight number. We were #1 and there were few aircraft moving at the time. We both remember being cleared for takeoff and a clear acknowledgement with the appropriate checklist items completed after being cleared for takeoff. We both felt it was quite disconcerting to be reclred while on the roll.

Original NASA ASRS Text

Title: MD80 CREW BECAME CONCERNED WHEN THEY WERE CLRED FOR TKOF AND WERE ON THE ROLL, WHEN AT ABOUT 80 KTS, THEY WERE AGAIN CLRED FOR TKOF.

Narrative: TYPICAL MIA SUMMER TSTM EVENING. LOTS OF GND STOPS AND ARPT FLOW TURNAROUNDS. WE WERE NOT INVOLVED IN ANY OF THAT, BUT THE CTLRS SEEMED OVERWHELMED WHEN WE TAXIED IN ON THE TURNAROUND. WE WERE CLRED FOR TKOF, CHKLIST COMPLETED AND VERIFIED. AT AROUND 80 KTS, THE CTLR CLRED US FOR TKOF AGAIN. I WAS PNF AND ACKNOWLEDGED 'PREVIOUSLY CLRED, ON THE ROLL.' THERE WAS NO FURTHER COM. AFTER CLEAN-UP, WE WENT OVER THE SIT AND BOTH OF US CLRLY HEARD OUR FLT NUMBER. WE WERE #1 AND THERE WERE FEW ACFT MOVING AT THE TIME. WE BOTH REMEMBER BEING CLRED FOR TKOF AND A CLR ACKNOWLEDGEMENT WITH THE APPROPRIATE CHKLIST ITEMS COMPLETED AFTER BEING CLRED FOR TKOF. WE BOTH FELT IT WAS QUITE DISCONCERTING TO BE RECLRED WHILE ON THE ROLL.

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.

MD80 crew became concerned when they were cleared for takeoff and were on the roll, when at about 80 KTS, they were again cleared for takeoff.