Determined to climb above rvsm altitudes; CE560 gets too slow and is unable to accelerate or maintain altitude. Oncoming traffic must be diverted to allow descent.

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Attributes
ACN	798570
Time
Date	200808
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	msl single value : 45000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zzz.artcc
Operator	general aviation : corporate
Make Model Name	Citation V
Operating Under FAR Part	Part 91
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Aircraft 2
Controlling Facilities	artcc : zzz.artcc
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 95 flight time total : 748 flight time type : 2500
ASRS Report	798570
Events
Anomaly	altitude deviation : excursion from assigned altitude other anomaly
Independent Detector	other flight crewa
Resolutory Action	controller : separated traffic controller : issued new clearance flight crew : exited adverse environment
Miss Distance	horizontal : 45000 vertical : 1500
Supplementary
Problem Areas	ATC Human Performance Aircraft Environmental Factor Flight Crew Human Performance
Primary Problem	Aircraft

Narrative:

While cruising at FL410 eastbound; we were assigned FL450 for proper direction and traffic. Upon reaching FL450 the aircraft failed to accelerate. It eventually decelerated to the point; we could no longer maintain airspeed or altitude and were forced to descend. TCAS map advised of oncoming traffic. I informed ATC of our condition and he vectored both aircraft in turns off course. Because of our conditions; we were unable to turn as quickly as desired. Although we were able to maintain visual separation; we were unable to maintain proper radar separation. Contributing factors; because of a paperwork snafu; we were not rvsm approved that day. ATC was working with us to get above rvsm airspace. Below normal temperatures at altitude; weight of aircraft; and rate of climb to attain FL450 were all contributing factors. Several times during the climb to FL410; we were asked to increase our rate of climb. We were fine to FL410 (should have taken vector at this time); but never regained our indicated back to normal before we started up to FL450.

Original NASA ASRS Text

Title: DETERMINED TO CLIMB ABOVE RVSM ALTS; CE560 GETS TOO SLOW AND IS UNABLE TO ACCELERATE OR MAINTAIN ALT. ONCOMING TRAFFIC MUST BE DIVERTED TO ALLOW DESCENT.

Narrative: WHILE CRUISING AT FL410 EBOUND; WE WERE ASSIGNED FL450 FOR PROPER DIRECTION AND TFC. UPON REACHING FL450 THE ACFT FAILED TO ACCELERATE. IT EVENTUALLY DECELERATED TO THE POINT; WE COULD NO LONGER MAINTAIN AIRSPD OR ALT AND WERE FORCED TO DSND. TCAS MAP ADVISED OF ONCOMING TFC. I INFORMED ATC OF OUR CONDITION AND HE VECTORED BOTH ACFT IN TURNS OFF COURSE. BECAUSE OF OUR CONDITIONS; WE WERE UNABLE TO TURN AS QUICKLY AS DESIRED. ALTHOUGH WE WERE ABLE TO MAINTAIN VISUAL SEPARATION; WE WERE UNABLE TO MAINTAIN PROPER RADAR SEPARATION. CONTRIBUTING FACTORS; BECAUSE OF A PAPERWORK SNAFU; WE WERE NOT RVSM APPROVED THAT DAY. ATC WAS WORKING WITH US TO GET ABOVE RVSM AIRSPACE. BELOW NORMAL TEMPS AT ALT; WT OF ACFT; AND RATE OF CLB TO ATTAIN FL450 WERE ALL CONTRIBUTING FACTORS. SEVERAL TIMES DURING THE CLB TO FL410; WE WERE ASKED TO INCREASE OUR RATE OF CLB. WE WERE FINE TO FL410 (SHOULD HAVE TAKEN VECTOR AT THIS TIME); BUT NEVER REGAINED OUR INDICATED BACK TO NORMAL BEFORE WE STARTED UP TO FL450.

Data retrieved from NASA's ASRS site as of May 2009 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.