Commercial Fixed Wing
Communication Breakdown
Aircraft Equipment Problem Critical; Deviation / Discrepancy - Procedural FAR; Deviation / Discrepancy - Procedural Maintenance
General Maintenance Action
Human Factors; Incorrect / Not Installed / Unavailable Part; Procedure
While walking through the cabin of Aircraft X I noticed that the overwing exit rows had tray tables installed on the seat backs that would allow the tables to be lowered thus blocking egress to the overwing exits. I made entries in the [logbook]; notified my Manager and the [Manager on Duty]; and told them I felt that this could have an immediate effect on the safety of flight. The next morning I returned to work and found that the items were signed off {closed out} by the Supervisor per the ECO (Engineering Change Order). Apparently the ECO; by design; allows seatback tray tables to be installed that will block egress to the overwing exits when in the lowered position. The ECO needs to be reviewed and corrected.
Mechanic reported seatback tray tables were installed; and approved; in emergency exit rows.