that grade. Deck status LSO This individual monitors deck status as either "clear" or "foul". Foul deck is further delineated based on what is "fouling" the landing area. With personnel or aircraft in the landing area, the "waveoff window" is adjusted so that approaching aircraft get no lower than 100 feet above the highest obstacle in the landing area. If there is neither personnel nor aircraft in the landing area but the deck is still foul, aircraft must be waved off in time to pass no lower than 10 feet above the landing area. LSO equipment LSO platform LSOs do their waving from the LSO Platform, which is on the port side of the ship aft of the port side aircraft elevator. It is protected by a wind deflector, and has an escape area into which deck personnel can jump in an emergency. The platform is outfitted with communications gear, deck status and ship indications, as well as controls for the OLS. LSO workstation The LSO work station consists of three pickle switches, a wind screen, the LSO Base Console and a HUD unit, with actual configuration varying dependent on ship type, age and technology. ILARTS Integrated Launch And Recovery Television Surveillance System (ILARTS) provides the LSO with a reference for aircraft lineup and glideslope information during recovery operations, and is used as a debriefing medium for pilots. Additionally, the system is used for recording significant flight deck events and, when necessary, for mishap or incident analysis. Grading Every carrier landing made by US pilots is graded for safety and technique, using a complex shorthand to denote what each aircraft did during various phases of each approach. Approaches are divided into parts: The 90 – when the aircraft has approximately 90 degrees of turn until lined up with the centerline. The Start – generally from when the aircraft crosses the wake and/or the pilot "calls the ball" (picks up the lights of the optical landing system) at around ¾ mile. The Middle – from about ½ to ¼ mile. In Close – from about ¼ mile to 1/10 mile. At the Ramp – from when the aircraft crosses the round-down of the flight deck until touchdown. In the Wires – from touchdown until stopped Deviations from optimal glideslope, centerline, and angle of attack are noted for each phase, resulting in an overall grade, which is debriefed to each pilot by