A pilot on departure experiences a TCAS RA and a discrepancy in the FMS.

Attributes
ACN	582980
Time
Date	200305
Day	Wed
Place
Locale Reference	airport : las.airport
State Reference	NV
Altitude	msl single value : 7000
Environment
Flight Conditions	VMC
Aircraft 1
Controlling Facilities	tracon : l30.tracon
Operator	general aviation : corporate
Make Model Name	Light Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : idale
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : l30.tracon
Flight Phase	climbout : intermediate altitude
Person 1
Affiliation	company : corporate
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 120 flight time total : 8850 flight time type : 900
ASRS Report	582980
Person 2
Affiliation	company : corporate
Function	flight crew : first officer oversight : pic
Events
Anomaly	aircraft equipment problem : less severe conflict : airborne less severe non adherence : clearance non adherence : far other spatial deviation
Independent Detector	aircraft equipment : tcas aircraft equipment other aircraft equipment : fms other controllera other flight crewa
Resolutory Action	controller : issued new clearance flight crew : returned to intended or assigned course
Consequence	faa : reviewed incident with flight crew
Supplementary
Problem Areas	Aircraft ATC Human Performance Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

I flew in and out of las vegas twice in 1 day. Out of 4 legs, I had problems with my FMS. Coming from the east I had no problems, but flying the idale 2 departure I had many problems. On departure I had 2 RA's and I was flying with my map down 2.5 mi. I did not tell controllers I was looking for traffic following RA command and radio was very busy. In the meantime controller told us to go direct idale, we pushed buttons on FMS to go direct to idale. I did not confirm on the map for some reason, the information was not right in the FMS box. At the same time we went up to 7300 ft because of RA's. We were to go up to 7000 ft. I do not know what happened to the FMS and it was a very busy time on departure. Coming back to las vegas after fuzzy intersection on the arrival that starts with a 'T,' the map jumped FMS said check position. The controller asked why I turned. I told him I had FMS troubles and told them I had visual with airport so that I did not trust FMS. On leaving las vegas on the ideal 2 I was very nervous as to what would happen. This time on departure a hawker was having troubles on the departure. This time when the FMS was acting up I pushed heading so that we would not go off course. Then I started to troubleshoot at what was going on. I had only 1 VOR (bld) and nothing else, no DME, no other VOR. I went to satellite page and I saw 5 and the number was going up and I was wondering if I had lost all the satellites. Las vegas is so close to a lot of military airspace. Were they doing something? I fly all over the USA and I have not had any problems with the FMS.

Original NASA ASRS Text

Title: A PLT ON DEP EXPERIENCES A TCAS RA AND A DISCREPANCY IN THE FMS.

Narrative: I FLEW IN AND OUT OF LAS VEGAS TWICE IN 1 DAY. OUT OF 4 LEGS, I HAD PROBS WITH MY FMS. COMING FROM THE E I HAD NO PROBS, BUT FLYING THE IDALE 2 DEP I HAD MANY PROBS. ON DEP I HAD 2 RA'S AND I WAS FLYING WITH MY MAP DOWN 2.5 MI. I DID NOT TELL CONTROLLERS I WAS LOOKING FOR TFC FOLLOWING RA COMMAND AND RADIO WAS VERY BUSY. IN THE MEANTIME CTLR TOLD US TO GO DIRECT IDALE, WE PUSHED BUTTONS ON FMS TO GO DIRECT TO IDALE. I DID NOT CONFIRM ON THE MAP FOR SOME REASON, THE INFO WAS NOT RIGHT IN THE FMS BOX. AT THE SAME TIME WE WENT UP TO 7300 FT BECAUSE OF RA'S. WE WERE TO GO UP TO 7000 FT. I DO NOT KNOW WHAT HAPPENED TO THE FMS AND IT WAS A VERY BUSY TIME ON DEP. COMING BACK TO LAS VEGAS AFTER FUZZY INTXN ON THE ARR THAT STARTS WITH A 'T,' THE MAP JUMPED FMS SAID CHK POS. THE CTLR ASKED WHY I TURNED. I TOLD HIM I HAD FMS TROUBLES AND TOLD THEM I HAD VISUAL WITH ARPT SO THAT I DID NOT TRUST FMS. ON LEAVING LAS VEGAS ON THE IDEAL 2 I WAS VERY NERVOUS AS TO WHAT WOULD HAPPEN. THIS TIME ON DEP A HAWKER WAS HAVING TROUBLES ON THE DEP. THIS TIME WHEN THE FMS WAS ACTING UP I PUSHED HEADING SO THAT WE WOULD NOT GO OFF COURSE. THEN I STARTED TO TROUBLESHOOT AT WHAT WAS GOING ON. I HAD ONLY 1 VOR (BLD) AND NOTHING ELSE, NO DME, NO OTHER VOR. I WENT TO SATELLITE PAGE AND I SAW 5 AND THE NUMBER WAS GOING UP AND I WAS WONDERING IF I HAD LOST ALL THE SATELLITES. LAS VEGAS IS SO CLOSE TO A LOT OF MIL AIRSPACE. WERE THEY DOING SOMETHING? I FLY ALL OVER THE USA AND I HAVE NOT HAD ANY PROBS WITH THE FMS.

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.