Vans rv-7A pilot reported an near midair collision with a B737 in the vicinity of dfw airport.

Attributes
ACN	1367018
Time
Date	201606
Local Time Of Day	0601-1200
Place
Locale Reference	D10.TRACON
State Reference	TX
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	RV-7
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	None
Aircraft 2
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Final Approach
Flight Plan	IFR
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Private
Experience	Flight Crew Last 90 Days 21 Flight Crew Total 479 Flight Crew Type 121
Events
Anomaly	Airspace Violation All Types Conflict NMAC
Miss Distance	Vertical 400

Narrative:

Flight was planned to tki. I got approval from afw tower to transition their class D airspace. From there on; I flew in a general 070/080 heading to avoid 2;000 feet dfw class B shelf north of dfw that was off the right wing. Copilot spotted a large mansion called champ d'orr in corinth; tx and wanted me to circle around. This mansion is under the 3;000 foot dfw class B shelf but it appeared to be right on the 3;000/2;000 dividing line on the garmin 530 display. I began circling the mansion to the north (left turn) at around 2;200 feet and upon doing so; saw a 737 pop out of a cloud around 400 feet above me. It made a slight turn to the right to avoid me and I descended down to below 2;000 feet at the same time. It and several other targets were showing on the TCAS at the time. The garmin 530 GPS was zoomed out more than I usually have it for flying near class B airspace; cluttering up the screen with the TCAS targets and airspace. The screen clutter prevented me from seeing how far above the 737 was as it passed overhead; but I estimate around 400 feet.I believe the root cause for the near miss is the low ceiling and the zoomed out setting on the 530; which cluttered the screen with other targets that were in the area; but not an immediate threat.

Original NASA ASRS Text

Title: Vans RV-7A pilot reported an NMAC with a B737 in the vicinity of DFW airport.

Narrative: Flight was planned to TKI. I got approval from AFW Tower to transition their Class D airspace. From there on; I flew in a general 070/080 heading to avoid 2;000 feet DFW Class B shelf north of DFW that was off the right wing. Copilot spotted a large mansion called Champ d'Orr in Corinth; TX and wanted me to circle around. This mansion is under the 3;000 foot DFW Class B shelf but it appeared to be right on the 3;000/2;000 dividing line on the Garmin 530 display. I began circling the mansion to the north (left turn) at around 2;200 feet and upon doing so; saw a 737 pop out of a cloud around 400 feet above me. It made a slight turn to the right to avoid me and I descended down to below 2;000 feet at the same time. It and several other targets were showing on the TCAS at the time. The Garmin 530 GPS was zoomed out more than I usually have it for flying near Class B airspace; cluttering up the screen with the TCAS targets and airspace. The screen clutter prevented me from seeing how far above the 737 was as it passed overhead; but I estimate around 400 feet.I believe the root cause for the near miss is the low ceiling and the zoomed out setting on the 530; which cluttered the screen with other targets that were in the area; but not an immediate threat.

Data retrieved from NASA's ASRS site 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.