Diamond have just published a new service bulletin SB36-105M which relates to corosion of the airbrake torque tubes.
It relates to H36 with serial #3501 to 3539 and #3601 to 36277. Inspect within 6 months and then each 5 years. Reasonably easy job and should take about 3 hours if you know what you are doing. Regards, John Callahan.
