This tender invites reputed firms with NTN certificates to supply various aviation expendable items as listed in Annexure A. The procurement includes engine oils, hydraulic fluids, greases, turbine oils, lubricants, and related consumables required for maintenance and operation of aviation equipment. The delivery period is 30 days for local stores and 90 days for foreign stores. The tender requires separate technical and commercial offers, with strict conditions on validity, packaging, and warranty. Firms must comply with all terms including earnest money deposit and delivery schedules.