AMM – Example Use The Aircraft Maintenance Manual (AMM) organizes maintenance procedures using ATA chapter numbers , which makes it easy for engineers to locate relevant tasks for each aircraft system. ATA chapters in the AMM guide line and base maintenance engineers for system-specific maintenance tasks. Example ATA Chapter Usage ATA 29: Hydraulic system procedures ATA 32: Landing gear maintenance ATA 21: Air conditioning system These chapters provide step-by-step instructions, troubleshooting guidance, and removal/installation procedures for each system. Who Uses These Instructions? Line Maintenance Engineers: Perform routine inspections and minor defect rectification at the airport Base Maintenance Engineers: Conduct heavy maintenance, in-depth system checks, and component overhauls in hangars By following AMM procedures based on ATA chapters, maintenance personnel ensure aircraft safety, reliability, and compliance with aviation regulations. ...