Air carrier medium large transport PIC performs evasive action go around after receiving a TCASII RA on same direction landing traffic using a parallel runway.

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Attributes
ACN	218597
Time
Date	199208
Day	Fri
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : hou
State Reference	TX
Altitude	agl bound lower : 500 agl bound upper : 500
Environment
Flight Conditions	Marginal
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	descent : approach landing : go around
Route In Use	approach : straight in
Flight Plan	IFR
Aircraft 2
Operator	general aviation : personal
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	descent : approach
Route In Use	approach : straight in
Flight Plan	VFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 16000 flight time type : 12000
ASRS Report	218597
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Events
Anomaly	conflict : airborne less severe non adherence : clearance non adherence : published procedure other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified
Resolutory Action	flight crew : took evasive action other
Consequence	Other
Miss Distance	horizontal : 900 vertical : 0
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation
Situations
Airport	other physical facility

Narrative:

While on ILS 12R hou a single engine small aircraft Y is landing on 12L which is 900 ft lateral separation. Our altitude was about 500 ft when a TCASII TA followed instantaneously by RA commanding 'climb' of 2000 FPM. We made a go around and finally got a visual on small aircraft during go around. Approach control did not mention the traffic, neither did the tower. If we had known perhaps we could have found the traffic. The visibility was poor due to haze. 900 ft is too close for parallel traffic as far as TCASII is concerned.

Original NASA ASRS Text

Title: ACR MLG PIC PERFORMS EVASIVE ACTION GAR AFTER RECEIVING A TCASII RA ON SAME DIRECTION LNDG TFC USING A PARALLEL RWY.

Narrative: WHILE ON ILS 12R HOU A SINGLE ENG SMA Y IS LNDG ON 12L WHICH IS 900 FT LATERAL SEPARATION. OUR ALT WAS ABOUT 500 FT WHEN A TCASII TA FOLLOWED INSTANTANEOUSLY BY RA COMMANDING 'CLB' OF 2000 FPM. WE MADE A GAR AND FINALLY GOT A VISUAL ON SMA DURING GAR. APCH CTL DID NOT MENTION THE TFC, NEITHER DID THE TWR. IF WE HAD KNOWN PERHAPS WE COULD HAVE FOUND THE TFC. THE VISIBILITY WAS POOR DUE TO HAZE. 900 FT IS TOO CLOSE FOR PARALLEL TFC AS FAR AS TCASII IS CONCERNED.

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.