Cabin Alt. Fluctuation
Please excuse me if I'm intruding,
Years ago I was on a domestic flight aboard either a 737 or A320 at cruise alt. when my ears popped 4 to 5 times in a row. The popping were at consistent intervals and lasted for ~1 or 2 seconds. I do not recall if there was mechanical background noise during the event due to the hearing degradation the popping caused. When the fluctuation ceased it seemed to return to the preset pressure because my hearing was clear as it was before this whole event.
The flight attendants were on the aisle with service carts, and did not react to this anomaly. I believe I heard another passenger mumble "what was that", but it was left unanswered.
Can someone shed some light on this?
Thank you