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AVIATION MAINTENANCE LEVELS
MUHAMMED IBRAR
AVIONICS SYSTEM DESIGN
DEPARTMENT OF AVIONICS ENGINEERING
LEVELS OF MAINTENANCE
There are four levels of maintenance
1. Line replacement unit (LRU)-level maintenance.
2. Shop replacement unit (SRU)-level maintenance.
3. Depot-level maintenance.
4. Factory-level or manufacturer-level maintenance.
LRU LEVEL MAINTENANCE.
AN/ARC-164 UHF Airborne Radio
• It is an LRU of FT-5 fighter aircraft
• It is used for communication in the air to air and air to ground
SRU LEVEL MAINTENANCE.
There 5 parts of AN/ARC-164 Radio these are SHOP REPLACEMENT UNIT
(SRU) of Line Replaceable Units (LRU).
• DATA CONVERTER
• SYNTHESIZER
• GUARD RECEIVER
• MAIN RECEIVER
• TRANSMITTER
DEPOT-LEVEL MAINTENANCE
Depot-level maintenance is third-level maintenance.
Front side and backplane of SRU
FACTORY-LEVEL OR MANUFACTURER-LEVEL
• Components that are used in the SRU are replaced on FACTORY-LEVEL
OR MANUFACTURER-LEVEL Maintenance. Like Resistor, Capacitor, ICS,
and other components.
• Level 4 maintenance operations are complex and of great importance,
requiring special technical expertise.
• There are two types of components to solder on the front plane of the
SRU
1. SURFACE MOUNT DEVICE (SMD)
2. THROUGH-HOLE DEVICE
SURFACE MOUNT DEVICE (SMD)
• An electronic component that mounts on the surface of a printed
circuit board.
• Very high sophisticated machine required for soldering of SMD.
THROUGH-HOLE DEVICE
• Through-hole components are best used for high-reliability products
that require stronger connections between layers.
Aviation maintenance levels

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Aviation maintenance levels

  • 1. AVIATION MAINTENANCE LEVELS MUHAMMED IBRAR AVIONICS SYSTEM DESIGN DEPARTMENT OF AVIONICS ENGINEERING
  • 2. LEVELS OF MAINTENANCE There are four levels of maintenance 1. Line replacement unit (LRU)-level maintenance. 2. Shop replacement unit (SRU)-level maintenance. 3. Depot-level maintenance. 4. Factory-level or manufacturer-level maintenance.
  • 3. LRU LEVEL MAINTENANCE. AN/ARC-164 UHF Airborne Radio • It is an LRU of FT-5 fighter aircraft • It is used for communication in the air to air and air to ground
  • 4. SRU LEVEL MAINTENANCE. There 5 parts of AN/ARC-164 Radio these are SHOP REPLACEMENT UNIT (SRU) of Line Replaceable Units (LRU). • DATA CONVERTER • SYNTHESIZER • GUARD RECEIVER • MAIN RECEIVER • TRANSMITTER
  • 5. DEPOT-LEVEL MAINTENANCE Depot-level maintenance is third-level maintenance. Front side and backplane of SRU
  • 6. FACTORY-LEVEL OR MANUFACTURER-LEVEL • Components that are used in the SRU are replaced on FACTORY-LEVEL OR MANUFACTURER-LEVEL Maintenance. Like Resistor, Capacitor, ICS, and other components. • Level 4 maintenance operations are complex and of great importance, requiring special technical expertise. • There are two types of components to solder on the front plane of the SRU 1. SURFACE MOUNT DEVICE (SMD) 2. THROUGH-HOLE DEVICE
  • 7. SURFACE MOUNT DEVICE (SMD) • An electronic component that mounts on the surface of a printed circuit board. • Very high sophisticated machine required for soldering of SMD.
  • 8. THROUGH-HOLE DEVICE • Through-hole components are best used for high-reliability products that require stronger connections between layers.