Near 'Hull Loss': British Airways Captain Intervened After First Officer's 3,000ft Blunder

British Airways Flight BA229 encountered significant difficulties on July 18th as it approached London Heathrow Airport. The aircraft’s first officer initiated a descent of approximately 3,000 feet following a reported Air Data Reference system malfunction. A PAN PAN call was initially made to alert air traffic control to the situation and potential hazards. Subsequently, the crew escalated the declaration to a MAYDAY signal indicating immediate danger. Captain David Williams intervened to prevent what could have been a hull loss due to the critical equipment failure.