A VFR pilot reported a taking evasive action from another aircraft at 3;300 ft while climbing out fo...

Attributes
ACN	1376866
Time
Date	201608
Local Time Of Day	1801-2400
Place
Locale Reference	NCT.TRACON
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Small Aircraft Low Wing 1 Eng Retractable Gear
Operating Under FAR Part	Part 91
Flight Phase	Climb
Route In Use	Direct
Flight Plan	None
Aircraft 2
Make Model Name	Small Transport Low Wing 2 Turboprop Eng
Flight Phase	Cruise
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Private Flight Crew Instrument
Experience	Flight Crew Last 90 Days 85 Flight Crew Total 390 Flight Crew Type 62
Events
Anomaly	Conflict NMAC Deviation - Procedural Published Material / Policy Flight Deck / Cabin / Aircraft Event Other / Unknown
Miss Distance	Horizontal 500 Vertical 500

Narrative:

Flying a routine flight for commercial training near byron airport (C83); initial climb out after leaving the pattern; I encountered a close mid-air with [a light twin aircraft] at 3;300 feet. I was not under any ATC contact since I was in echo airspace and was just transitioning through.we were monitoring lvk tower and norcal approach starting from 2;500 feet and heard nothing about another aircraft. The weather was hazy and marginal due to wildfires burning throughout the area; making it difficult to judge the distance of traffic. This traffic came from my 3 o'clock and was hidden behind the glare of the angle of the sun and coupled with the haze and a dirty window; appeared without warning. My aircraft is equipped with a garmin 430W; which is supposed to give me traffic advisories. From flying in the lvk valley in the past; I knew that my GPS was unreliable since it warned me that traffic is unavailable; which is rare but not uncommon. The GPS was unusable for traffic advisories except for navigation purposes. In the aircraft was myself; my CFI and a pax who is a non-pilot. None of us saw the traffic until I pushed the nose down to 3000 ft to avoid. I knew that I was close to him when I could see the oil streaks on the aircrafts belly. After this event; we maintained visual separation and continued home uneventful.

Original NASA ASRS Text

Title: A VFR Pilot reported a taking evasive action from another aircraft at 3;300 ft while climbing out following pattern work at C83. The traffic was not displayed on aircraft's Garmin 430W and apparently neither LVK nor NORCAL; which were monitored; were communicating with the traffic.

Narrative: Flying a routine flight for commercial training near Byron Airport (C83); initial climb out after leaving the pattern; I encountered a close mid-air with [a light twin aircraft] at 3;300 feet. I was not under any ATC contact since I was in Echo Airspace and was just transitioning through.We were monitoring LVK Tower and NorCal Approach starting from 2;500 feet and heard nothing about another aircraft. The weather was Hazy and marginal due to wildfires burning throughout the area; making it difficult to judge the distance of traffic. This traffic came from my 3 o'clock and was hidden behind the glare of the angle of the sun and coupled with the haze and a dirty window; appeared without warning. My aircraft is equipped with a Garmin 430W; which is supposed to give me traffic advisories. From flying in the LVK valley in the past; I knew that my GPS was unreliable since it warned me that Traffic is Unavailable; which is rare but not uncommon. The GPS was unusable for Traffic Advisories except for navigation purposes. In the aircraft was myself; my CFI and a pax who is a non-pilot. None of us saw the traffic until I pushed the nose down to 3000 ft to avoid. I knew that I was close to him when I could see the oil streaks on the aircrafts belly. After this event; we maintained visual separation and continued home uneventful.

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.

A VFR pilot reported a taking evasive action from another aircraft at 3;300 ft while climbing out following pattern work at C83. The traffic was not displayed on aircraft's garmin 430W and apparently neither lvk nor norcal; which were monitored; were communicating with the traffic.