Bombardier_CRJ_00-Landing_Gear

Vol. 1 16--00--1
REV 56, Jan 31/03
LANDING GEAR
Table of Contents
Flight Crew Operating Manual
CSP A--013
MASTER
CHAPTER 16 -- LANDING GEAR
Page
TABLE OF CONTENTS 16--00
Table of Contents 16--00--1
INTRODUCTION 16--10
Introduction 16--10--1
NOSE AND MAIN LANDING GEAR 16--20
Nose and Main Landing Gear 16--20--1
Landing Configuration Warning 16--20--11
Alternate Landing Gear Extension 16--20--11
Wheels and Tires 16--20--11
PROXIMITY SENSING SYSTEM 16--30
Proximity Sensing System 16--30--1
System Circuit Breakers 16--30--4
BRAKE SYSTEM 16--40
Brake System 16--40--1
Parking Brake 16--40--8
Brake Temperature Monitoring System 16--40--8
Anti-Skid System 16--40--8
System Circuit Breakers 16--40--11
NOSE WHEEL STEERING SYSTEM 16--50
Nose Wheel Steering System 16--50--1
System Circuit Breakers 16--50--4
LIST OF ILLUSTRATIONS
INTRODUCTION
Figure 16--10--1 Landing Gear and Landing Gear Doors 16--10--2
NOSE AND MAIN LANDING GEAR
Figure 16--20--1 Main Landing Gear 16--20--2
Figure 16--20--2 Nose Landing Gear 16--20--3
Figure 16--20--3 Nose Landing Gear Doors -- Ground Operation 16--20--4
Figure 16--20--4 Landing Gear Controls 16--20--6
Figure 16--20--5 Landing Gear Manual Release 16--20--7
Figure 16--20--6 Landing Gear Retraction and Extension -- Schematic 16--20--8
Figure 16--20--7 Landing Gear EICAS Messages 16--20--9
REV 56, Jan 31/03
Vol. 1 16--00--2
LANDING GEAR
Table of Contents
Flight Crew Operating Manual MASTER
CSP A--013
Figure 16--20--8 Landing Gear -- Primary Page Gear Indications 16--20--10
PROXIMITY SENSING SYSTEM
Figure 16--30--1 Landing Gear Functional Schematic 16--30--2
Figure 16--30--2 PSEU -- EICAS Messages 16--30--3
BRAKE SYSTEM
Figure 16--40--1 Brake System -- Schematic 16--40--2
Figure 16--40--2 Brake Wear Indication 16--40--3
Figure 16--40--3 Brake System -- EICAS Messages and
Synoptic Page Indications 16--40--4
Figure 16--40--4 Parking Brake System 16--40--5
Figure 16--40--5 Parking Brake -- EICAS Messages 16--40--6
Figure 16--40--6 Brake Temperature Monitoring System 16--40--7
Figure 16--40--7 Anti Skid System 16--40--10
NOSE WHEEL STEERING SYSTEM
Figure 16--50--1 Nose Wheel Steering System Schematic 16--50--2
Figure 16--50--2 Nose Wheel Steering System 16--50--3
Vol. 1 16--10--1
REV 56, Jan 31/03
LANDING GEAR
Introduction
Flight Crew Operating Manual
CSP A--013
MASTER
1. INTRODUCTION
The landing gear is a retractable tricycle type consisting of two, wing root mounted, main
landing gear assemblies and a forward, fuselage mounted, steerable, nose landing gear
assembly. The main landing gear assemblies retract inboard and the nose landing gear
assembly retracts forward. Each landing gear has a nitrogen filled shock strut to absorb and
dissipate the shock loads encountered when the aircraft lands.
The landing gear subsystems are as follows:
S Landing gear extension and retraction
S Landing gear doors
S Alternate landing gear extension
S Landing gear overheat detection
S Brake system
S Brake temperature monitoring system (BTMS)
S Antiskid
S Nose wheel steering
S Proximity sensing electronic unit (PSEU).
Landing gear extension and retraction is electrically activated by the landing gear selector
lever and controlled by the proximity sensing electronic unit (PSEU). Sensors for the PSEU
are mounted on the landing gear and landing gear doors. The PSEU also provides landing
gear position indication for display on the EICAS. In normal operation, the landing gear is
hydraulically actuated by number 3 hydraulic system. An alternate independent means of
extending the landing gear is available should the normal extension system fail.
Each gear assembly has two wheels and each of the four main wheels is fitted with a,
hydraulically operated, steel multi-disc brake assembly.
REV 56, Jan 31/03
Vol. 1 16--10--2
LANDING GEAR
Introduction
Flight Crew Operating Manual MASTER
CSP A--013
Landing Gear and Landing Gear Doors
Figure 16---10---1
NOSE LANDING
GEAR FORWARD
DOORS
NOSE LANDING
GEAR AFT DOOR
RIGHT MAIN
LANDING GEAR
LEFT MAIN
LANDING GEAR
MAIN LANDING
GEAR BAYS
LEFT MAIN LANDING
GEAR DOOR
NOSE
LANDING
GEAR
Vol. 1 16--20--1
REV 56, Jan 31/03
LANDING GEAR
Nose and Main Landing Gear
Flight Crew Operating Manual
CSP A--013
MASTER
1. NOSE AND MAIN LANDING GEAR
Normal extension or retraction of the landing gear is initiated by landing gear control lever
　
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