6.3.6.3. The indication described in paragraph 6.3.6.2. shall be produced by the simultaneous operation of the direction indicator lamps and shall be in accordance to the following conditions.
In case of single indication: 3 seconds maximum
In case of continuous indication:
Duration: 5 minutes maximum
Frequency: (2 ± 1) Hz
On time: Off time ± 10 per cent
This indication shall be allowed only when the device which starts and/or stops the engine (propulsion system) is set in a position which makes it impossible for the engine (propulsion system) to operate. 		a7c0