From the FAA website..
FDC 1/9172 - .. SPECIAL NOTICE .. EFFECTIVE IMMEDIATELY UNTIL
1110252359 UTC.
AIRCRAFT ARE ADVISED THAT A POTENTIAL HAZARD MAY OCCUR DUE TO REENTRY
OF THE SATELLITE ROSAT INTO THE EARTH'S ATMOSPHERE.
THE FEDERAL AVIATION ADMINISTRATION (FAA) IS WORKING WITH THE
DEPARTMENT OF DEFENSE (DOD) AND THE NATIONAL AERONAUTICS AND SPACE
ADMINISTRATION (NASA) TO ENSURE THAT THE MOST CURRENT RE-ENTRY
INFORMATION IS PROVIDED TO OPERATORS AS QUICKLY AS POSSIBLE.
FURTHER NOTAMS WILL BE ISSUED IF SPECIFIC INFORMATION BECOMES
AVAILABLE INDICATING A UNITED STATES (US) AIRSPACE IMPACT. IN THE
INTEREST OF FLIGHT SAFETY, IT IS CRITICAL THAT ALL PILOTS/FLIGHT CREW
MEMBERS REPORT ANY OBSERVED FALLING SPACE DEBRIS TO THE APPROPRIATE
ATC FACILITY AND INCLUDE POSITION, ALTITUDE, TIME, AND DIRECTION OF
DEBRIS OBSERVED.
THE DOMESTIC EVENTS NETWORK /DEN/ TELEPHONE 202-493-5107, IS THE FAA
COORDINATION FACILITY. WIE UNTIL UFN. CREATED: 21 OCT 10:47 2011
Makes one really wonder just how quick the FAA DoD and Nasa could work together and pass on useful/relevant info in such matters.
FN