Less than standard separation between GA-small aircraft cpr-small transport northeast of geg.

Attributes
ACN	100085
Time
Date	198812
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : geg
State Reference	WA
Altitude	msl bound lower : 12100 msl bound upper : 12800
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zse tracon : geg
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turbojet Eng
Flight Phase	climbout : intermediate altitude
Route In Use	enroute : on vectors
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, Low Wing, 1 Eng, Retractable Gear
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 60 flight time total : 5000 flight time type : 3000
ASRS Report	100085
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : instrument pilot : commercial pilot : cfi
Experience	flight time last 90 days : 12 flight time total : 2150 flight time type : 600
ASRS Report	100282
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : required legal separation
Independent Detector	atc equipment other atc equipment : unspecified
Resolutory Action	flight crew : returned to intended course or assigned course none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew faa : investigated
Miss Distance	horizontal : 18000 vertical : 700
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On climbing out we were cleared to 12000'. We were notified of traffic that was descending to 13000'. We didn't have traffic in sight. We leveled at 12000' and due to our good rate of climb we went to 12100' and immediately releveled at 12000'. We were told to call quality assurance. They said that they were sorting out an altitude bust that involved us at 12300' and another aircraft at 12800'. Our altimeter setting was correct at the time/set at spokane at takeoff. The high barometer and turbulence of the day may have contributed to the incident. We asked that the FAA check their equipment and we are having our air data computer, altimeter and transponder checked. Supplemental information from acn 100282: significant barometric pressure changes were taking place in that area due frontal passage. VMC conditions prevailed and no evasive action was required. ARTS III radar data showed reporter's aircraft level at 13000' MSL for previous portion of flight.

Original NASA ASRS Text

Title: LESS THAN STANDARD SEPARATION BETWEEN GA-SMA CPR-SMT NE OF GEG.

Narrative: ON CLBING OUT WE WERE CLRED TO 12000'. WE WERE NOTIFIED OF TFC THAT WAS DSNDING TO 13000'. WE DIDN'T HAVE TFC IN SIGHT. WE LEVELED AT 12000' AND DUE TO OUR GOOD RATE OF CLB WE WENT TO 12100' AND IMMEDIATELY RELEVELED AT 12000'. WE WERE TOLD TO CALL QUALITY ASSURANCE. THEY SAID THAT THEY WERE SORTING OUT AN ALT BUST THAT INVOLVED US AT 12300' AND ANOTHER ACFT AT 12800'. OUR ALTIMETER SETTING WAS CORRECT AT THE TIME/SET AT SPOKANE AT TKOF. THE HIGH BAROMETER AND TURB OF THE DAY MAY HAVE CONTRIBUTED TO THE INCIDENT. WE ASKED THAT THE FAA CHK THEIR EQUIPMENT AND WE ARE HAVING OUR AIR DATA COMPUTER, ALTIMETER AND XPONDER CHKED. SUPPLEMENTAL INFO FROM ACN 100282: SIGNIFICANT BAROMETRIC PRESSURE CHANGES WERE TAKING PLACE IN THAT AREA DUE FRONTAL PASSAGE. VMC CONDITIONS PREVAILED AND NO EVASIVE ACTION WAS REQUIRED. ARTS III RADAR DATA SHOWED RPTR'S ACFT LEVEL AT 13000' MSL FOR PREVIOUS PORTION OF FLT.

Data retrieved from NASA's ASRS site as of August 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.