BELL 505 Mechanic's Guide
  • Welcome!
  • 🚁System Descriptions
    • Introduction
    • Airframe Systems
      • Dimensions and Areas
      • Fuselage
        • Forward Fuselage
        • Mid Fuselage
        • Aft Fuselage
        • Roof
        • Tailboom
      • Stabilizers
      • Landing Gear
      • Equipment/Furnishings
      • Fire Protection (Fire Extinguishing)
      • Doors
      • Windows
      • Environmental Control
        • Distribution
        • Avionics Fans
        • Heating
      • Ice and rain protection (Air intakes)
    • Integrated Avionics Systems
      • Systems Integration and Display
      • Indicating/Recording Systems
        • Instruments and Control Panels
        • General Computers
        • Central Warning System
        • Central Display System
      • Communications
      • Navigation
        • Dependent Position Determining
    • Main Rotor
      • Main Rotor Hub and Blade Assembly
      • Rotating Controls
      • Main Rotor Indicating
    • Main Rotor Drive
      • Engine/Gearbox Couplings
      • Mast Assembly
      • Transmission Assembly
      • Transmission Oil
      • Mounts and Attachments
      • Main Rotor Drive Indicating
    • Tail Rotor
      • Tail Rotor Hub and Blade Assembly
      • Rotating Controls
    • Tail Rotor Drive
      • Shafts
      • Gearbox
      • Tail Rotor Drive Indicating
    • Flight Control Systems
      • Rotor Flight Controls
        • Dual Controls Kit
        • Collective Control System
        • Cyclic Control System
        • Anti-torque Control System
        • Servo-Control System
      • Hydraulic Power
    • Fuel
      • Storage
      • Distribution
      • Fuel Indicating
    • Power Plant Systems
      • Power Plant
      • Air
      • Exhaust
      • Oil
      • Engine Control
      • Ignition
    • Electrical Systems
      • Electrical Power
        • DC Generation
        • External Power
        • DC Electrical Load Distribution
        • Multipurpose Equipment
      • Lights
  • 🪛Line Maintenance
    • Overview of Line Maintenance
    • Servicing
      • Replenishing and Depleting
        • Filling the hydraulic system with fluid
        • Draining fluid from the hydraulic system
      • Lubrication
        • Lubricating the main rotor grips
        • Lubricating the trunnion bearings
        • Lubricating the pillow block assemblies
        • Lubricating the duplex bearing
        • Lubricating the needle bearings
        • Lubricating the pitch change mechanism
        • Lubricating the crew seat positioning mechanism
      • Clean and Surface Protection
        • Rotor blade - Erosion tape replacement
        • Flushing the hydraulic system
      • Inspection
        • 50 flight hours/1 year inspection
        • 100 flight hours inspection
        • 100 flight hours/6 months inspection
        • 100 flight hours/1 year inspection
        • 100 flight hours/18 months inspection
        • 150 flight hours inspection
        • 200 flight hours inspection
        • 300 flight hours inspection
    • Test and Checks
      • Power Assurance Check (PAC)
      • Checking the fluid level of the hydraulic system
      • Flame Out Protection System (FOPS) test
      • Testing the operation of the hydraulic system
      • Testing operation of audio integration system
      • Testing operation of speech communication
      • Testing operation of central warning systems
    • Fault Isolation
      • Crew Alerting System (CAS) Messages
        • WARNING Messages
          • BATTERY HOT
        • CAUTION Messages
        • ADVISORY Messages
        • STATUS Messages
      • System Failures
    • Removal/Installation
      • Electrical Power
        • Installing the ground power unit (GPU)
        • Removing the ground power unit (GPU)
      • Equipment/Furnishings
        • Removing the crew seats
        • Installing the crew seats
      • Hydraulic Power
        • Installing the hydraulic power unit
        • Removing the hydraulic power unit
        • Replacing the HRFM filter element
        • Restoring/replacing the hydraulic pressure filter element
        • Removing the hydraulic pump
        • Removing the pump adapter assembly
        • Installing the pump adapter assembly
        • Installing the hydraulic pump
      • Main Rotor
        • Removing the NR sensor
        • Installing the NR sensor
    • Standard Repairs
      • Main Driveshaft
      • Air Intake
  • 🔧Base Maintenance
    • Overview of Base Maintenance
    • Servicing
      • Adjust, align and calibrate
      • Inspection
    • Function Test
    • Fault Isolation
    • Removal/Installation
    • Major Repairs
  • 🧰Component Interim Maintenance
    • Overview of Component Interim Maintenance
    • Time Limits
    • Component Interim Inspections
  • ⚙️Component Restoration (Overhaul)
    • General Information
    • Main Rotor Hub Assembly
      • Dimensions and Areas
      • Maintenance Planning Information
      • Tools and Workaids
      • Disassembly
      • Cleaning and Paint Removal
      • Inspections
        • Conditional Inspection
        • Non-Destructive Inspections
      • Repair
      • Finishing
      • Assembly
    • Swashplate and Support Assembly
    • Mast Assembly
    • Transmission Assembly
    • Freewheel Assembly
    • Tail Rotor Hub Assembly
    • Tail Rotor Gearbox
Powered by GitBook
On this page
  • Left aft-fuselage panel
  • Right aft-fuselage panel
  • Truss assembly
  • Avionics shelf assembly
  • Center aft-fuselage panel
  1. System Descriptions
  2. Airframe Systems
  3. Fuselage

Aft Fuselage

PreviousMid FuselageNextRoof

Last updated 1 year ago

The aft fuselage consists of the structural and aerodynamic elements from aft of the baggage compartment to the tailboom attachment, and also the structural elements above the baggage compartment. It supports the power plant, drivetrain, and contains most of the avionics equipment. It has the components that follow:

Left aft-fuselage panel

The left aft-fuselage is a composite panel assembly. It protects and gives access to the equipment inside the aft fuselage. It provides the aerodynamic shape and structural integrity of the fuselage. It is located on the left side between the mid fuselage and the tailboom attachment. It is attached to the structure with screws.

Right aft-fuselage panel

The right aft-fuselage is a composite panel assembly. It protects and gives access to the equipment inside the aft fuselage. It provides the aerodynamic shape and structural integrity of the fuselage. It is located on the right side between the mid fuselage and the tailboom attachment. It is attached to the structure with screws. It has an access door that gives the access to the battery and the CB panel and a small access door that gives the access to the external power receptacle.

Truss assembly

DO NOT CHANGE OR REPAIR THE TRUSS ASSEMBLY. THE TRUSS ASSEMBLY IS A FATIGUE CRITICAL PART. ALSO, DO NOT PUT OR INSTALL PARTS ON THE TRUSS ASSEMBLY THAT ARE NOT APPROVED BY BELL HELICOPTER TEXTRON (BHT). IF YOU DO NOT OBEY THESE INSTRUCTIONS, THE STRUCTURAL INTEGRITY OF THE HELICOPTER WILL CHANGE AND THIS WILL CAUSE INJURY AND/OR DAMAGE TO THE HELICOPTER.

The truss assembly consists of steel tubes and plates welded together. It has the mounts for the transmission, power plant, and flight controls. It is the principal load bearing structure, linking the forward and mid fuselage with the tailboom. It also supports the avionics shelf assembly and the combined oil cooler.

Avionics shelf assembly

The avionics shelf assembly is made of aluminum alloy. It is the main support for avionics equipment and the battery. It is located within the truss assembly.

Center aft-fuselage panel

The center aft-fuselage panel is an aluminum panel. It protects the equipment inside the aft fuselage and provides the aerodynamic shape and structural integrity of the fuselage. It is located on the bottom of the aft fuselage between the mid fuselage and the combined oil cooler. It is attached to the structure with screws.

🚁
Left aft-fuselage panel
Right aft-fuselage panel
Truss assembly
Avionics shelf assembly
Center aft-fuselage panel