ASME B30.12-2006 pdf free download.Handling Loads Suspended From Rotor craft.
authori:ed: appointed by a duly constituted administrative or regulatory authority.
backup quick-release subsystem (BQRS): the secondary or “second choice” subsystem used to perform a normal or emergency jettison of external cargo.
birdcagmg: the deformation of a section of wire rope imparting to such section a birdcage-like appearance.
cargo: the part of the rotorcraft load combination that is removable, changeable, and attached to the rotorcraft by an approved means.
chocking: blocking to prevent rolling or other inadvertent movement of the wheels of an aircraft when on the ground or other supported areas with a block of wood, metal, or other substance.
clwker hitch: a method of rigging a sling in which the sling is passed around the load, then through one loop eye, end fitting, or other device with the loop eye or end fitting attached to the lifting device. This hitch can be made with a sliding choker hook or similar device.
closed throat load beam: that weight-bearing part of a primary cargo hook that must be manually relatched or closed after an apex fitting has been placed on it (see Fig. 1).
commercial operator: the company, firm individual, or other business enterprise that, for compensation or hire, engages in the carriage by aircraft in air commerce of persons or property.
contractor: the company, firm, individual, or other business enterprise that contracts with a commercial operator to perform work.
copilot: a pilot who is designated to be second in command of an aircraft during flight time.
designated person: a person selected or assigned by the employer or employer’s representative as being competent to perform specific duties.
flight crew ,,,embcr: a person assigned to perform duty in an aircraft during flight time.
flight visibility: the average forward, horizontal distance, from the cockpit of an aircraft in flight, at which prominent unlighted objects may be seen and identified by day and prominent lighted objects may be seen and identified by night.
ground base faciliti,’: the site from which operations are conducted on a continuous basis or until a job is completed.
ground crew(s): those designated persons specifically required to be on or near the job site in connection with the actual conduct or performance of the external load operation.
ground visibility: prevailing horizontal visibility near the earth’s surface as reported by the United States National Weather Service or an accredited observer.
helicopter: a rotorcraft that derives its horizontal and vertical flight ability primarily from its engine-driven rotors; in this Volume, it will be the basic vehicle for lifting, hoisting, pulLing, towing, and moving cargo.
hoist (noun): a powered, airframe-mounted device for raising or lowering a helicopter external load.
hoist (verb): to raise or lower a load with a rotorcraf I- mounted hoist.
hook, cargo, primary: a device attached or suspended from an aircraft that is used to connect an external load to the aircraft through direct coupling or by lead lines; this unit features both a primary (electrical) quick release device and manual backup (mechanical) quick release device.
human external cargo (HEC): a person(s) that at some point in the operation is carried external to the rotorcraft.
jettison, emergency (complete load release): the intentional, instantaneous release of NHEC or HEC in a preset sequence by the QRS that is normally performed to achieve safer operation of the rotorcraft in an emergency.