Near midair collision between 2 air carrier aircraft on approach to multi parallel runways.

Attributes
ACN	266090
Time
Date	199403
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : den
State Reference	CO
Altitude	msl bound lower : 7500 msl bound upper : 7500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tower : den
Operator	common carrier : air carrier
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	descent : approach
Flight Plan	IFR
Aircraft 2
Make Model Name	Beechcraft Twin Turboprop Jet Undifferentiated or Other Model
Operating Under FAR Part	other : unknown
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 75 flight time total : 12000 flight time type : 3000
ASRS Report	266090
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	conflict : nmac other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : anomaly accepted
Consequence	faa : reviewed incident with flight crew
Miss Distance	horizontal : 300 vertical : 200
Supplementary
Primary Problem	Flight Crew Human Performance
Situations
Airport	other physical facility procedure or policy : unspecified

Narrative:

Approaching NDB locator for runway 26L, cleared for visual to runway 26R, had been given, sighted and acknowledged traffic ahead to follow, one for runway 26L, one for runway 26R. Reducing speed from 170 KTS assigned to 140 KT target, lowering gear and flaps. Strong surface wind, 300/15 plus 25, dust plumes on ground, short final for runway 26L. TCASII in TA to prevent nuisance alerts from parallel approachs. First officer flying, utters 2 word phrase, points out commuter (stretch beech?) going by approximately 200 ft above and 300 ft to our right, approximately 20 KTS faster, parallel approach to runway 25. Closest point of approach already past, separation increasing, so continued approach and landed. Runway 25 traffic never given to us and if it had been we would not have expected to see him as he should have stayed behind us in order to maintain visual on us. Triple parallel visuals to closely spaced runways is a bad operation in any case but with wind shear approaching go around criteria and the resultant potential for no warning missed approach it should be called off. The new denver airport cannot open too soon for me.

Original NASA ASRS Text

Title: NMAC BTWN 2 ACR ACFT ON APCH TO MULTI PARALLEL RWYS.

Narrative: APCHING NDB LOCATOR FOR RWY 26L, CLRED FOR VISUAL TO RWY 26R, HAD BEEN GIVEN, SIGHTED AND ACKNOWLEDGED TFC AHEAD TO FOLLOW, ONE FOR RWY 26L, ONE FOR RWY 26R. REDUCING SPD FROM 170 KTS ASSIGNED TO 140 KT TARGET, LOWERING GEAR AND FLAPS. STRONG SURFACE WIND, 300/15 PLUS 25, DUST PLUMES ON GND, SHORT FINAL FOR RWY 26L. TCASII IN TA TO PREVENT NUISANCE ALERTS FROM PARALLEL APCHS. FO FLYING, UTTERS 2 WORD PHRASE, POINTS OUT COMMUTER (STRETCH BEECH?) GOING BY APPROX 200 FT ABOVE AND 300 FT TO OUR R, APPROX 20 KTS FASTER, PARALLEL APCH TO RWY 25. CLOSEST POINT OF APCH ALREADY PAST, SEPARATION INCREASING, SO CONTINUED APCH AND LANDED. RWY 25 TFC NEVER GIVEN TO US AND IF IT HAD BEEN WE WOULD NOT HAVE EXPECTED TO SEE HIM AS HE SHOULD HAVE STAYED BEHIND US IN ORDER TO MAINTAIN VISUAL ON US. TRIPLE PARALLEL VISUALS TO CLOSELY SPACED RWYS IS A BAD OP IN ANY CASE BUT WITH WIND SHEAR APCHING GAR CRITERIA AND THE RESULTANT POTENTIAL FOR NO WARNING MISSED APCH IT SHOULD BE CALLED OFF. THE NEW DENVER ARPT CANNOT OPEN TOO SOON FOR ME.

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.