The aircraft was operating a freight service from Delhi to London Heathrow. During taxiing after landing the crew observed that the wing flaps were slown to retract and after shutdown a ?FLAP CONTROL? status message was displayed. This was recorded by the crew in the aircraft?s technical log. During post-flight inspections by an engineer, damage was identified to wing panels above and below the inboard flaps on the right wing and the flaps appeared out of alignment. Further investigation showed that the outboard end fitting of the wing landing gear support beam had failed. The outboard end fittings of the right wing gear support beam failed due to cracks, propagating from corrosion pits in the main bore of the fitting, reaching a critical length.