Air carrier first officer reported an uncommanded roll shortly after takeoff due to the exhaust stre...

Narrative:

I was pm. On taxi out I noticed aircraft Y parked just clear of 34L; on taxiway A8. We proceeded normally for takeoff; completed checklists; and received takeoff clearance for 34L. Aircraft Y was still parked on taxiway A8 facing east. Our takeoff roll was normal and we started rotation approximately around taxiway A10. Passing taxiway A8; our aircraft experienced an abrupt left roll due to the jet blast of aircraft Y. We were approximately 50-100 ft in altitude. Passing 1000 ft; we configured for climb and I mentioned to the captain that 'I knew that was going to happen.' tower gave us the handoff to departure. Before switching frequencies; I mention to tower that even though I assumed aircraft Y was at idle power; we received a significant jet blast induced roll at rotation. I also mentioned that A8 wasn't the smartest place to park aircraft Y.I noticed this hazard on taxi out and minimized its significance. I had experienced a similar situation in a different aircraft over 10 years ago. I failed to mention the hazard to the captain and/or ground control. I write this report to highlight the hazard for smf ground control and general pilot awareness.

Original NASA ASRS Text

Title: Air carrier First Officer reported an uncommanded roll shortly after takeoff due to the exhaust stream from a parked aircraft with engines running pointed toward the departure runway.

Narrative: I was PM. On taxi out I noticed Aircraft Y parked just clear of 34L; on Taxiway A8. We proceeded normally for takeoff; completed checklists; and received takeoff clearance for 34L. Aircraft Y was still parked on Taxiway A8 facing east. Our takeoff roll was normal and we started rotation approximately around Taxiway A10. Passing Taxiway A8; our aircraft experienced an abrupt left roll due to the jet blast of Aircraft Y. We were approximately 50-100 ft in altitude. Passing 1000 ft; we configured for climb and I mentioned to the Captain that 'I knew that was going to happen.' Tower gave us the handoff to departure. Before switching frequencies; I mention to Tower that even though I assumed Aircraft Y was at idle power; we received a significant jet blast induced roll at rotation. I also mentioned that A8 wasn't the smartest place to park Aircraft Y.I noticed this hazard on taxi out and minimized its significance. I had experienced a similar situation in a different aircraft over 10 years ago. I failed to mention the hazard to the Captain and/or Ground Control. I write this report to highlight the hazard for SMF Ground Control and general Pilot awareness.

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.

Attributes
ACN	1336081
Time
Date	201602
Local Time Of Day	0601-1200
Place
Locale Reference	SMF.Airport
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Large Transport Low Wing 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	Initial Climb
Flight Plan	IFR
Aircraft 2
Make Model Name	Commercial Fixed Wing
Operating Under FAR Part	Part 121
Flight Phase	Taxi
Flight Plan	IFR
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 187
Events
Anomaly	Inflight Event / Encounter Other / Unknown

Air carrier first officer reported an uncommanded roll shortly after takeoff due to the exhaust stream from a parked aircraft with engines running pointed toward the departure runway.