Royale
Landing gear control panel shows indications only from LGCIU1 when it’s supplied electrically. Obviously when LGCIU1 is faulty the indication will be unlocked. It has nothing to do with LGCIU2.
Landing gear lever red arrow comes into play below 750ft if flaps are in landing configuration and lever is up. It is either connected directly or indirectly to both LGCIUs or ECAM warning.
Below 750ft if gear lever is down and one of the LGCIU1 sensor spuriously detects not down locked it will trigger unlock light on the panel as well as on SD wheel page unlock indication on LGCIU1. But no red light on landing gear lever.
If one of the struts is genuinely detected by both LGCIUs as unlocked it will trigger
“L/G NOT DOWN LOCKED” ECAM WARNING
Continuous repetitive chime with Master warning
Unlock red warning on landing gear control panel
On the ECAM SD page both red lights on affected gear strut.
Red arrow on landing gear lever control panel.
ECAM MEMO will remain blue.
You may refer to Airbus Safety first issue #10
Last edited by vilas; 13th Jun 2020 at 10:15.