Operation Manual Part 2

Aerosoft – Digital Aviation

CRJ-70 & CRJ-900

AOM PART 2

Systems Description

VOL

5-1-82

26-Jul-2017

LANDING GEAR

The CRJ is equipped with two main landing gear assemblies mounted in either wing-root, and a forward,

steerable, fuselage mounted nose gear assembly. Each assembly is equipped with two wheels and a braking

system.

Gear extraction and retraction is triggered electrically by the landing gear selector whereas the extension and

retracting is actuated hydraulically (by hydraulic system 3).

In case the normal extension mechanism fails an alternate gear extension mechanism is available: just pull the

landing gear manual release handle to unlock the gear uplocks. Due to gravity, the gear will partially extend. A

combination of valves in the hydraulic system is activated to divert pressure from the No. 2 system to complete

the gear extension and lock the gear in the down position.