The applicability of FAR 121.377 is not eliminated by a person's performing a mix of work such as you describe. Such an interpretation would defeat the purpose of the regulation which is to insure that person's performing part 121 maintenance or preventive maintenance are provided relief from duty.
The cause of rheumatoid arthritis is unknown, although it appears to be an autoimmune disease. When the body's immune system does not operate as it should, white blood cells that normally attack bacteria or viruses attack healthy tissue instead â in this case, the synovium, or joint tissue.
Studies have found an increased risk of bone loss and fracture in individuals with rheumatoid arthritis. People with rheumatoid arthritis are at increased risk for osteoporosis for many reasons.To begin with, the glucocorticoid medications often prescribed for the treatment of rheumatoid arthritis can trigger significant bone loss.In addition, pain and loss of joint function caused by the disease can result in inactivity, further increasing osteoporosis risk.Studies also show that bone loss in rheumatoid arthritis may occur as a direct result of the disease. The bone loss is most pronounced in areas immediately surrounding the affected joints.n addition, pain and loss of joint function caused by the disease can result in inactivity, further increasing osteoporosis risk. Studies also show that bone loss in rheumatoid arthritis may occur as a direct result of the disease.