<< >> NASA ASRS Report 816313, December 2008

VFR twin engine turboprop pilot with pct described potential conflict at 13;500 with IFR air carrier; ATC directed turn away from traffic.

Attributes
ACN	816313
Time
Date	200812
Place
Locale Reference	airport : dca.airport
State Reference	DC
Altitude	msl single value : 13500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca.tracon
Operator	general aviation : corporate
Make Model Name	Starship Model 2000
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Flight Plan	IFR
Aircraft 2
Controlling Facilities	tracon : dca.tracon
Operator	common carrier : air carrier
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 200 flight time total : 10000 flight time type : 100
ASRS Report	816313
Events
Anomaly	conflict : airborne less severe
Independent Detector	other flight crewa
Resolutory Action	flight crew : took evasive action
Miss Distance	horizontal : 12000 vertical : 0
Supplementary
Problem Areas	Flight Crew Human Performance ATC Human Performance
Primary Problem	Ambiguous

Narrative:

While collecting data; VFR with tas; potomac approach issued a call to turn left to 050 degrees; about a left 130 degree heading change. An autopilot turn was immediately selected. As the airplane angle of bank reached 30 degrees and the left turn was in progress; I visually acquired the B737; climbing about 3;000f ft low on a direct collision path with our path. I immediately increased angle of bank and the B737 started a left turn. Track divergence was established with no further communications.

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Original NASA ASRS Text

Title: VFR twin engine turboprop pilot with PCT described potential conflict at 13;500 with IFR air carrier; ATC directed turn away from traffic.

Narrative: While collecting data; VFR with TAs; Potomac Approach issued a call to turn left to 050 degrees; about a left 130 degree heading change. An autopilot turn was immediately selected. As the airplane angle of bank reached 30 degrees and the left turn was in progress; I visually acquired the B737; climbing about 3;000f FT low on a direct collision path with our path. I immediately increased angle of bank and the B737 started a left turn. Track divergence was established with no further communications.

Data retrieved from NASA's ASRS site as of May 2009 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.