When tiedown chains are to be used, position them in accordance with the MIM, so as not to interfere with the landing gear during the drop check of the gear. Jacking procedures on land do not require tiedowns, except in high-wind conditions. Check your MIM for jacking restrictions, warnings, and cautions. Obtain the support equipment required by the MIM, ensuring all preoperational inspections have been completed. The area below and around the aircraft must be cleared of all equipment not required for the jacking operation.
Carrier tiedowns for aircraft jacking.
Position and extend wing and nose jacks until seated on wing jack and tiedown adapters. Some aircraft require the extension of the center screw to provide for clearance of the gear doors. Raising Aircraft Apply jack pressure on each jack without lifting the aircraft, and check to see that the base of each jack is evenly seated. Correct base position of jack, as required, for firm base seating. For shipboard operations, all jacks must be tied down before jacking aircraft with a minimum of three tiedown chains per jack.