British Airways Boeing 767-336ER G-BNWI, which has been under maintenance since 23rd April, returned to service early this morning operating yesterday’s delayed BA137 as BA137X. The flight routed London Heathrow – Monrovia direct instead of the usual London Heathrow – Freetown – Monrovia routing.  The return BA136 will operate Monrovia – Freetown – London Heathrow as normal.