An air carrier apparently ingested a bird on the SNA Runway 19R Noise Abatement Procedure. A short duration ENG VIB in the .4 to 1.5 range lasted 3-5 seconds before engine parameters returned to normal.

Narrative

Just after takeoff from Runway 19R; SNA; a significant vibration and rumbling sound was sensed in the cockpit. Almost immediately an automatic engine vibration report began printing from the ACARS printer. The vibration was transient; lasting 3-5 seconds. The audible report that accompanied this vibration did not sound like an airframe or landing gear-related noise or imbalance. Specifically: A special Noise Abatement Departure was conducted from Runway 19R; SNA. At 800' AGL; I reduced the thrust from TOGA to CLB; and reduced the pitch attitude from approximately 22 degrees to 13 degrees. Approximately 5-10 seconds after the thrust reduction; the vibration event occurred. I did immediately scan the 'Engine Page'; and remember seeing only typical 'ENG VIB' indications; in the .4 to 1.5 range on both N1 and N2. As soon as the vibration event began; it ceased and normal flight handling was continued to our destination. While en route; two discrepancy reports were sent to Maintenance via ACARS indicating the event and the subsequent ENG VIB report that automatically printed. Upon arrival;the First Officer and I gave a verbal recounting to Maintenance personnel. Later in the duty day I reviewed the maintenance report for the aircraft. This report revealed that evidence of bird ingestion into the gas path of ENG #1 was present along with bleed-air ducting and/or valve damage. I do not know if this damage was specifically related to the bird ingestion.