China Civil Aviation Instrument Landing System Category II Operation Regulations

Chapter 1 General Provisions Article 1 In order to ensure the safe and orderly implementation of Category II operations of civil aviation instrument landing systems, these regulations are formulated. Article 2 These regulations apply to Category II operations of instrument landing systems implemented at civil airports (hereinafter referred to as Category II operations). Article 3 All units engaged in civil aviation activities shall formulate implementation details and working procedures for Category II operations in accordance with these regulations. Article 4 The meanings of the following terms in these regulations are:

(1) Precision approach: using instrument landing system (ILS), microwave landing system (MLS) or precision approach radar (PAR) to provide bearings and glide-guided instrument approaches.

(2) Non-precision approach: using ground navigation facilities such as omnidirectional beacon (VOR), navigation platform (NDB) or localizer (LLZ, or ILS glide slide is not working), only Azimuth guidance, instrument approach without glide guidance.

(3) Minimum airport operation standards: the restrictions applicable to take-off or landing at the airport. For take-off, it is expressed by visibility (VIS) or runway visual range (RVR), including cloud height if necessary; for precision For approach and landing, it is expressed by visibility (VIS) or/and runway visual range (RVR) and decision height (DH); for non-precision approach and landing, it is expressed by visibility (VIS), minimum descent height (MDH) and cloud height.

(4) Obstacle Clearance Height (OCH): The lowest height determined in accordance with appropriate obstacle clearance criteria using the elevation plane of the runway threshold as the basis for height calculation.

(5) Decision height (DH): In a precision approach, the height specified based on the elevation plane of the runway threshold. If the aircraft descends to this height, if it cannot achieve the goal required to continue the approach, it will Depending on the reference, a go-around must be initiated.

(6) Visibility (VIS): The distance at which obvious non-luminous objects can be seen and distinguished during the day or obvious luminous objects can be seen at night.

(7) Runway visual range (RVR): The maximum distance at which the pilot can see the runway pavement markings, runway edge lights or center line lights when the aircraft is on the runway center line.

(8) Precision approach and landing operation categories

Category I (CATI) operations: decision height not less than 60 meters (200 feet), visibility not less than 800 meters or runway Precision approach and landing with a visual range of not less than 550 meters.

Category II (CAT II) operations: precision approach and landing with a decision height less than 60 meters (200 feet) but not less than 30 meters (100 feet) and a runway visual range of not less than 350 meters.

Category IIIA (CAT IIIA) operations: precision approach and landing with a decision height less than 30 meters (100 feet) or no decision height and a runway visual range of not less than 200 meters.

Category IIIB (CAT IIIB) operations: precision approach and landing with a decision height less than 30 meters (100 feet) or no decision height and a runway visual range less than 200 meters but not less than 50 meters.

Category IIIC (CAT IIIC) operations: precision approach and landing without decision height and runway visual range.

(9) ILS critical area: a specified area near the localization beacon and glide beacon. Vehicles and aircraft are not allowed to enter this area during ILS operation to prevent them from causing damage to the ILS space signal. Accept interference.

(10) ILS sensitive area: It is an area extending from the critical area. During ILS operation, the parking and activities of vehicles and aircraft must be controlled to prevent possible interference with ILS space signals.

(11) Obstacle-free zone (OFZ): The space surrounded by the inner approach surface, inner transition surface, abort landing surface and part of the lifting belt. In this space, except for a small number of specified items Outside, there are no fixed obstacles to penetrate.

(12) Airport maneuver area: The area of ??the airport used for aircraft takeoff, landing and taxiing, excluding the apron.

(13) Airport activity area: The area of ??the airport used for aircraft takeoff, landing and taxiing, including maneuvering area and apron.

(14) Airport control area: an area designated within the airport where the entry of persons and vehicles is restricted based on security needs.

(15) Row of lights: three or more aviation ground lights closely arranged on a horizontal line.

(16) Lamp failure: When for some reason, the beam deviates from the specified vertical or horizontal direction or the average light intensity is lower than 50% of the specified average light intensity of a new lamp, the lamp is for invalidation.

(17) Reliability of the lighting system: refers to the probability that all devices operate within the specified allowable error range and that the system remains in a usable state.

(18) Sign: A symbol or a group of symbols set on the pavement of the airport activity area in order to display navigation information.

(19) Fragility: The object maintains its structural integrity and stiffness up to a required maximum load, but will be damaged, twisted, and bent when impacted by a larger load, causing damage to the aircraft. characteristics that minimize harm. Chapter 2 Operators Section 1 Application and Approval Article 5 Operators planning to implement Category II operations must submit an application to the regional civil aviation administration in accordance with the prescribed procedures and methods. After being reviewed and qualified by the regional civil aviation administration in accordance with the standards of these regulations, , reported to the Civil Aviation Administration of China for approval. The operator can only implement Category II operations after obtaining approval from the Civil Aviation Administration of China.

In the process of implementing Category II operations, the operator must continue to comply with the requirements of this regulation. Otherwise, the approval for Category II operation may be revoked depending on the circumstances.