Near midair collision between air carrier large transport and GA small aircraft.

Attributes
ACN	96593
Time
Date	198810
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : iah
State Reference	TX
Altitude	msl bound lower : 5200 msl bound upper : 5400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : iah
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	descent other
Route In Use	arrival star : star 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	climbout : intermediate altitude cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 225 flight time total : 20000 flight time type : 11500
ASRS Report	96593
Person 2
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 100 flight time total : 3000 flight time type : 100
ASRS Report	96526
Events
Anomaly	conflict : nmac
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 0 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

At approximately XA49Z in the vicinity of daybo intersection on the daisetta 7 arrival into iah, assigned heading 230 degree to intercept runway 26 localizer crs, descending thru 5200' MSL to assigned altitude of 4000' MSL. We encountered an aircraft who appeared at 11 O'clock position. The aircraft was at our approximately altitude and northbound, passing slowly across the windshield from left to right. Evasive action was necessary and we pulled the nose up to break our descent and climbed about 200' before resuming our descent. We identified the aircraft to be an orange and white small aircraft and estimate that the small aircraft passed 100-200' directly beneath us. Houston approach advised us that they did not have the small aircraft on radar and did not know his identity. An aircraft immediately behind us confirmed to iah approach control the presence of a northbound small aircraft at approximately 5000'.

Original NASA ASRS Text

Title: NMAC BETWEEN ACR LGT AND GA SMA.

Narrative: AT APPROX XA49Z IN THE VICINITY OF DAYBO INTXN ON THE DAISETTA 7 ARR INTO IAH, ASSIGNED HDG 230 DEG TO INTERCEPT RWY 26 LOC CRS, DSNDING THRU 5200' MSL TO ASSIGNED ALT OF 4000' MSL. WE ENCOUNTERED AN ACFT WHO APPEARED AT 11 O'CLOCK POS. THE ACFT WAS AT OUR APPROX ALT AND NBND, PASSING SLOWLY ACROSS THE WINDSHIELD FROM L TO R. EVASIVE ACTION WAS NECESSARY AND WE PULLED THE NOSE UP TO BREAK OUR DSCNT AND CLBED ABOUT 200' BEFORE RESUMING OUR DSCNT. WE IDENTIFIED THE ACFT TO BE AN ORANGE AND WHITE SMA AND ESTIMATE THAT THE SMA PASSED 100-200' DIRECTLY BENEATH US. HOUSTON APCH ADVISED US THAT THEY DID NOT HAVE THE SMA ON RADAR AND DID NOT KNOW HIS IDENTITY. AN ACFT IMMEDIATELY BEHIND US CONFIRMED TO IAH APCH CTL THE PRESENCE OF A NBOUND SMA AT APPROX 5000'.

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.