B737 captain reported flap problem on departure.

Attributes
ACN	1645562
Time
Date	201905
Local Time Of Day	0001-0600
Place
Locale Reference	SNA.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Flight Phase	Takeoff
Component
Aircraft Component	Flap/Slat Indication
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Less Severe Inflight Event / Encounter Wake Vortex Encounter

Narrative:

Takeoff at sna; flaps 25; 26k motors. Vibration both audible and tactile. Vibration went away once flaps and slats up. Leveled off at 15;000 feet. Speed 250. Contacted dispatch/maintenance. Decided to divert. I [advised ATC]; radar vectors to [runway] 25L. We experienced some vibration at flaps 30 but when first officer was correcting for wake induced roll; vibration was very noticeable. Uneventful landing. Left flaps at 30 so maintenance could perform inspection.

Original NASA ASRS Text

Title: B737 Captain reported flap problem on departure.

Narrative: Takeoff at SNA; flaps 25; 26k motors. Vibration both audible and tactile. Vibration went away once flaps and slats up. Leveled off at 15;000 feet. Speed 250. Contacted Dispatch/Maintenance. Decided to divert. I [advised ATC]; radar vectors to [Runway] 25L. We experienced some vibration at flaps 30 but when First Officer was correcting for wake induced roll; vibration was very noticeable. Uneventful landing. Left flaps at 30 so Maintenance could perform inspection.

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.