IN.-Abbreviation for inches.

IND-Abbreviation for indicated.

IN. H20-Abbreviation for inches of water column (27.68 in. H20 equals 1.0 psi equals 2.036 in. Hg). See also IN. Hg.

IN. Hg-Abbreviation for inches of mercury column. (0.07349 in. Hg equals 1.0 in. H2O) See also IN. H2O.

INNER CORE-Five to nine internal yarns (number depending on type) for suspension lines that are covered by a woven sleeve or casing.

INSPECTION-A close examination for damage, wear, and dirt. Also, regularly scheduled examination of parachute assemblies. See also SERVICING PARACHUTES.

KEEPER-Small strip of tape or loop used to retain an object; for example, riser and back pad keepers.

KIAS-Knots indicated air speed.

KICKPLATE-A platform on the NES-8B parachute container that serves as a firm place for the pilot parachute to spring from during opening.

KIT BAG, FLYER'S-A container made of canvas or nylon and reinforced with webbing, usually with a slide fastener opening. It is used to carry the parachute and its accessories.

KNOT, BINDER-The simplest method of joining two threads or lines. The two ends are placed side by side and a simple, overhand knot is then tied in both lines simultaneously. It will not slip when drawn tightly. Also called a thumb knot.

KNOT, BOWLINE-A knot formed by making a small overhand loop a desired distance from the end of the line. The end of the line is then passed through the loop from the underside of the main part of the line and back through the small loop. When this knot is drawn tight, it will not slip but still can be easily untied.

KNOT, CLOVE-HITCH-A knot formed by making one turn around a post, bringing the end across the line, continuing around the post a second time, and passing the end under the second loop. Used to tie suspension lines to connector links.

KNOT, HALF-HITCH-A knot formed by passing a cord or line around an object, then passing the free end around the main part of the cord and bringing the free end up through the loop thus formed. It is used to finish the tying of the suspension lines to the connector link and in forming safety ties.

KNOT, LARK'S HEAD-A knot formed around an attachment ring or bar by passing the free ends of the line around the bar or though the ring and then through a loop or bight in the line. This knot is used to attach pilot parachute connector straps.

KNOT, OVERHAND-A simple knot tied in the end of a line by forming a loop and passing the end over and down through the loop.

KNOT, SQUARE-A knot formed bypassing the end of the cord in the left hand over and under the end in the right hand, and then reversing the process by passing the end in the right hand over and under the one in the left hand.

KNOT, SURGEON'S-The surgeon's knot is similar to the square knot, except that the first overhand tie is wrapped twice around the cord or line.

LB-Abbreviation for pounds.

LIFT WEBS-The parts of parachute harness webbing or riser that extends from the connector links to the shoulder adapters, D-rings, or quickrelease fitting.

LINE, ANTI-SQUID-A line attaching two suspension line connector links to canopy vent lines on some parachute assemblies. The antisquid lines are shorter than suspension lines and prevent the main canopy from squidding by bearing the load of the drogue parachute until the main canopy is fully opened. See also SQUIDDING.

LINE, DROGUE LINK-A line connecting the withdrawal line to the drogue parachute on MBEU systems that do not employ a guillotine. The drogue link line contains a slide disconnect pin, which will separate the line and withdrawal line in case of manual parachute actuation.

LINE, SHORT ANTI-SQUID-A Martin-Baker patent improved anti-squid line, also called a pull down vent line. See LINE, ANTI-SQUID.

LINE, STATIC-A line used to open a parachute assembly without the necessity of pulling a ripcord manually. A static line is attached to the ripcord manually. A static line is attached to the ripcord and the aircraft or ejection seat. When the line becomes taut, it withdraws the ripcord locking pins or deployment bag. The parachute then opens.

LINE, SUSPENSION-Nylon cords that connect the canopy of the parachute to the harness assembly.

LINE, TOGGLE-One or more parachute lines that run from a slot or orifice in a steerable canopy to the harness, providing steerability. When such lines are under tension during parachute opening or descent, they are classified as suspension lines.

LINE, VENT-Nylon cord that crosses the vent opening of a canopy.

LINE, WITHDIL%WAL-A line connecting the stabilizer drogue on the ejection seat to the locking pins and canopy vent on the NES-8B and MBEU parachute assemblies. The line opens the container and withdraws the canopy during normal ejection operation.

LINE, CONNECTOR-A small, releasable, rectangular metal fitting used to connect the lift webs and suspension lines.

LINK, CONNECTOR, WITHDRAWAL LINE-Nylon webbing with loops sewn in both ends. The withdrawal line connector link attaches the withdrawal line to the apex of the canopy and large loop in shortened anti-squid line.

LOCK, RIPCORD PIN-The ripcord pin lock is used in conjunction with the ripcord pin pull test. The lock is designed in such a manner as to allow initial movement of the ripcord pins, but does not permit them to totally disengage.

LOCKSTITCH-A common sewing-machine stitch formed when the thread in the needle goes through the material and connects with the bobbin thread. The needle and bobbin thread should lock in the center of the material thickness. (Reference Federal Standard 751, Type 301.)

LONG BAR-A long metallic or wooden bar used in parachute packing and used as an aid in closing a parachute container.

LOOP-A warp or filling thread pulled out to form a loop on a cloth surface.

LOOP, HESITATOR-One of a series of webbing or tape loops that holds suspension lines in an orderly position in the container when the parachute is packed, and that pays the lines out in sequence for orderly deployment of the canopy assembly.

LOOP, LOCKING-A loop sewn to deployment bag or canopy to allow full extension of suspension lines before opening the canopy.

LOOP, RETAINING-Webbing or tape loop used to hold folded lines or excess webbing in position.

LOOSE STITCHES-Thread that does not lie smoothly on the surface of the cloth.

LOX-Abbreviation for liquid oxygen.

LPM-Abbreviation for liters per minute.

LUMP-An internal imperfection of a suspension line that feels hard to the touch. It is usually caused by internal knots in core yams or casings, or by slippage or displacement of one or more inner core yams near an overlap.