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This specification covers the requirements for solid-state frequency converters with 480 [or 380] V 3-phase, 60 [or 50] Hz input and 115/200 V, 3-phase, 400 Hz output capable of powering aircraft type loads requiring MIL-STD-704D quality power. The frequency converter shall be a self-contained unit suitable for the environment of intended use. Typical applications include dedicated use at passenger loading bridges (mounted under the bridge in telescoping bridge applications or fixed installation at base of stationary type loading bridges) with weatherproof enclosures or hangar/lab use where indoor fixed or portable units can be used.

This SAE Aerospace Information Report (AIR) describes field-level procedures to determine if 400 Hz electrical connections for external power may have been subjected to excessive wear, which may result in inadequate disengagement forces.

This SAE Aerospace Recommended Practice (ARP) outlines recommended ramp pavement marking standards for proper guidance and positioning of GSE on commercial transport aircraft parking and handling stands (gates), in line with International Civil Aviation (ICAO) recommendations applicable to airport aprons. Throughout this document, the minimum essential criteria are identified by use of the key word “shall”. Recommended criteria are identified by use of the key word “should” and, while not mandatory, are considered to be of primary importance in providing safety effective ramp markings. Deviation from recommended criteria should only occur after careful consideration and thorough service evaluation have shown alternate methods to provide an equivalent level of safety.

This SAE Aerospace Recommended Practice (ARP) is intended to recommend: a uniform criteria for determination of wind loads that aircraft ground support equipment can encounter and yet allow personnel to work safely, b uniform systems for maintaining stability (i.e., stabilizers, outriggers, spring lockout devices), c standardization of specific types of interlock systems and actuation systems, d a standard formula with its associated design criteria for calculating the steady-state wind stability (i.e., tip point) for aircraft ground support equipment, e a standard method for testing these systems.

This SAE Aerospace Recommended Practice (ARP) is intended to recommend: a uniform criteria for determination of wind loads that aircraft ground support equipment can encounter and yet allow personnel to work safely, b uniform systems for maintaining stability (i.e., stabilizers, outriggers, spring lockout devices), c standardization of specific types of interlock systems and actuation systems, d a standard formula with its associated design criteria for calculating the steady-state wind stability (i.e., tip point) for aircraft ground support equipment, e a standard method for testing these systems.