China Civil UAV Theory Questions — Questions 104–113

A pressure altimeter indicates altitude by measuring atmospheric pressure, based on the rule that pressure decreases with altitude.

QNH is corrected sea-level pressure. After QNH is set, the altimeter indicates corrected sea-level pressure altitude.

One day has 24 hours, so there are 24 time zones. 360 degrees / 24 = 15 degrees.

The UAV Flight Manual (AFM) is written by the UAV manufacturer in the standard format of the UAV Flight Manual Writing Specification set by the industry association authorized by the Authority. It is specific to a particular UAV model and registration number, and contains operating procedures and limitations. The Pilot's Operating Handbook (POH) must include AFM information and be submitted to the Authority for filing, and the relevant paragraphs must state that approval by the Authority allows it to replace the AFM. The UAV Owner/Information Manual is also a document written by the UAV manufacturer, containing general information about UAV manufacture and models. The Owner/Information Manual is not approved by the Authority and is not specific to a particular registered aircraft. It provides general information about aircraft operation, is not kept up to date, and cannot replace the AFM or the POH. By level of detail: POH > AFM > Owner/Information Manual.

Without a UAV serial number and registration number, the AFM cannot be matched to a specific UAV's information (for example, installed equipment and weight/balance information), and therefore has no reference guidance role for that aircraft.

The Authority places primary responsibility for maintaining an airworthy UAV on the owner and operator. So C is correct.

London is in the Greenwich Mean Time (GMT) zone, that is, London local time is the same as Greenwich time. Greenwich time is based on the prime meridian and is relatively less precise. Coordinated Universal Time (UTC) is based on the atomic clock and is more scientific and precise than GMT. UTC was formulated and recommended by the International Radio Consultative Committee, and is kept within 0.9 seconds of GMT. Option A is therefore not rigorous enough, and option C has the wrong time zone, so both are eliminated. Option B is correct.

Basic Principles of Flight of the People's Republic of China, Article 47: in daytime flight, before an aircraft takes off or lands, when horizontal visibility is less than 2 km, all airport obstacle marker lights shall be turned on; when horizontal visibility is less than 1 km, runway lights shall also be turned on at takeoff, and at landing, all lights supporting flight in the aircraft's landing direction (the opposite direction of landing) shall also be turned on.

Study note: anti-collision lights, day and night, when the engine is running. (1) Navigation lights: from power on to power off; (2) anti-collision lights: from aircraft pushback (or ground engine run) until after landing rollout to the parking position; (3) landing lights: from the landing approach phase until after landing touchdown.

Flight levels are used to coordinate the relative altitudes of different flights, so a common standard is needed. Standard atmospheric pressure assumes sea level as the common standard. Source: Basic Rules of Flight of the People's Republic of China, Article 80: ... (3) flight levels shall be calculated on the basis of the assumed sea level under standard atmospheric pressure conditions. The true course angle shall be measured from the route starting point and turning points.