Narrative:

[I] was cruising at 10;500 ft. Msl. Having just past the pmd VOR northbound and on a heading of 315; I was in the vicinity of wjf when I encountered wake turbulence from an aircraft. There were no traffic alerts or advisories; however 3 military aircraft were seen. One; a C130; was crossing west to east and ~1;000 ft. Lower than us. Two others; estimated to be a C5A and a KC135; were turning south and would pass off our left wing approximately 5 miles to the west. I assumed they were descending on approach to edwards AFB as this is along a straight line from this position.none of these aircraft passed in front of us nor were at the same altitude us.[I] encountered wake turbulence [and] was immediately rolled inverted and to the right approximately 270 degrees of roll. To recover from this upset I continued the roll to a wings level attitude; but the nose was ~ 30 degrees low (below the horizon) and we were on a course of 253. The recovery was normal and the forward airspeed did not exceed 180 kts. Vne for this aircraft is 220 kts. And va is 182 kts.we contacted joshua approach and informed them of our upset; saying we had just done a uncommanded 'barrel roll' and had recovered. There were no injuries to passengers nor damage to the aircraft. After recovery we regained our cruising altitude of 10;500 ft. Msl but overshot when I misread the altimeter and reset the autopilot.during the upset we were using an autopilot which did not disengage during the event.we continued our flight and landed at our destination with no further problems. Subsequent checks showed no damage or loss of fuel or fluidsconsidering the number and type of aircraft operating in the vicinity of our flight; I believe we should have been alerted to the traffic and the possibility of wake turbulence in the vicinity.

Related reports:

Google
 

Original NASA ASRS Text

Title: C310 pilot reported a loss of aircraft control due to a possible wake turbulence encounter.

Narrative: [I] was cruising at 10;500 ft. msl. Having just past the PMD VOR northbound and on a heading of 315; I was in the vicinity of WJF when I encountered wake turbulence from an aircraft. There were no traffic alerts or advisories; however 3 military aircraft were seen. One; a C130; was crossing west to east and ~1;000 ft. lower than us. Two others; estimated to be a C5A and a KC135; were turning south and would pass off our left wing approximately 5 miles to the west. I assumed they were descending on approach to Edwards AFB as this is along a straight line from this position.None of these aircraft passed in front of us nor were at the same altitude us.[I] encountered wake turbulence [and] was immediately rolled inverted and to the right approximately 270 degrees of roll. To recover from this upset I continued the roll to a wings level attitude; but the nose was ~ 30 degrees low (below the horizon) and we were on a course of 253. The recovery was normal and the forward airspeed did not exceed 180 kts. Vne for this aircraft is 220 kts. and Va is 182 kts.We contacted Joshua Approach and informed them of our upset; saying we had just done a uncommanded 'barrel roll' and had recovered. There were no injuries to passengers nor damage to the aircraft. After recovery we regained our cruising altitude of 10;500 ft. msl but overshot when I misread the altimeter and reset the autopilot.During the upset we were using an autopilot which did not disengage during the event.We continued our flight and landed at our destination with no further problems. Subsequent checks showed no damage or loss of fuel or fluidsConsidering the number and type of aircraft operating in the vicinity of our flight; I believe we should have been alerted to the traffic and the possibility of wake turbulence in the vicinity.

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.