Quick view Add to Cart Supplement, Vultee - Inspection, Repair, and Reinforcement of Landing-Gear Shock Strut Torque Lugs - BT-13, BT-13A, BT-15, and SNV-1 Document Part Number: T.O. No. 01-50B-53A Number of pages: 2Part Number: T.O. No. 01-50B-53ARevision Date: 18-Oct-1943 MSRP: Was: Now: $15.00