Near midair collision.

Attributes
ACN	151631
Time
Date	199007
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : irw
State Reference	OK
Altitude	msl bound lower : 35000 msl bound upper : 35000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zfw
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 3 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 100 flight time total : 11000 flight time type : 800
ASRS Report	151631
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 180 flight time total : 4800 flight time type : 2000
ASRS Report	151981
Events
Anomaly	conflict : nmac other spatial deviation
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 500 vertical : 0
Supplementary
Primary Problem	ATC Human Performance
Air Traffic Incident	Pilot Deviation Operational Error
Situations
ATC Facility	procedure or policy : unspecified

Narrative:

We were cruising westbound at FL350 (mach .84) passing overhead irw VOR when another aircraft came within 500' or less of us at the same altitude, opp direction. We advised the controller of the near midair collision. Recommendation: don't let controllers assign altitudes that are not proper for the direction of flight, if this was the cause in this incident.

Original NASA ASRS Text

Title: NMAC.

Narrative: WE WERE CRUISING WBND AT FL350 (MACH .84) PASSING OVERHEAD IRW VOR WHEN ANOTHER ACFT CAME WITHIN 500' OR LESS OF US AT THE SAME ALT, OPP DIRECTION. WE ADVISED THE CTLR OF THE NMAC. RECOMMENDATION: DON'T LET CTLRS ASSIGN ALTS THAT ARE NOT PROPER FOR THE DIRECTION OF FLT, IF THIS WAS THE CAUSE IN THIS INCIDENT.

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.