Page 22 - PPL-engelsk 2025

Air Law

1.2.6.3 Equipment requirements for VFR Night flights

Aircraft used for VFR night flying must have gyros to ensure, in the absence of

a true horizon, that the wings can be kept level using an artificial horizon.

There must be a course gyro and a turn indicator.

The system must be fail-safe, so it’s not enough for all of them to be vacuum-

driven because if this system fails, we’re in trouble.

Redundancy is achieved by having at least one gyro, typically the turn indicator,

powered by an alternate system. This alternative system is usually electricity.

To ensure this system, there must be a mechanism showing power supply

failure, such as a Low Voltage Warning.

There must be a navigation system that is connected to the aircraft’s electrical

system and permanently installed.

With the installation of these items and approval from the Danish Transport

Agency, the aircraft manual will show that the aircraft is approved for VFR night
operations.

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1.2.7 Definitions

ACC (Area Control Centre)

AFIS (Aerodrome Flight Information Service)

AGL (Above Ground Level) – Height above ground level

AIP (Aeronautical Information Publication) – Publication issued by a state or

under the authority of a state, containing such information of a permanent

nature that is of significant importance for aviation.

Alarm Service – A service responsible for notifying the control center, flight

information centre, and rescue coordination center about aircraft requiring

search and rescue services, and to assist these services as necessary.

Flight Theory PPL(A)(UL)/LAPL Henning Andersen, Midtjysk Flyveskole© 2025 22