If Engine #2 is already running in "Hotel Mode" (propeller braked, core running) or full flight configuration, its bleed air can route across the pneumatic cross-bleed valve to start Engine #1. 4. Standard Maintenance & Inspection Protocols
Understanding the ATR 72-600 Maintenance Manual (Chapter 80: Starting)
Loosen the V-band coupling clamp securing the starter to the accessory gearbox pad.
Unlike larger commercial jets that use pneumatic (air) starters, the ATR 72-600 utilizes an electrical starter-generator mounted on the accessory gearbox of each engine. During the start cycle, it acts as a DC motor. Once the engine runs autonomously, it switches to function as a 28V DC generator. atr 72600 maintenance 80 manual pdf 2021
Step-by-step instructions for replacing hardware. This includes torque values, gasket specifications, and safety wire requirements. 3. Functional Tests
Ensuring the pneumatic starter valve operates correctly is crucial for engine start. Maintenance includes testing the valve's opening and closing mechanisms during a simulated start cycle. C. Troubleshooting (ATA 80-10) Common issues requiring reference to the manual include: Slow acceleration Starter running but not engaging Abnormal start sequences 4. Accessing the ATR 72-600 Maintenance Manual PDF (2021)
ITT (Interstage Turbine Temperature) rise must be observed within 10 seconds of fuel introduction. Safety Limits: ITT must not exceed specific limits during start (e.g., 900 raised to the composed with power C If Engine #2 is already running in "Hotel
Within ATR 72-600 AMM Chapter 80, tasks are segregated by page blocks that dictate the type of maintenance action:
By following the guidelines and best practices outlined in this article, operators can ensure the ATR 72600 engine receives proper maintenance, reducing downtime and ensuring optimal performance, safety, and longevity.
In addition to following the maintenance schedule and guidelines outlined in the manual, here are some best practices to keep in mind: Unlike larger commercial jets that use pneumatic (air)
A Maintenance Guide to the ATR 72-600: Understanding Chapter 80 (Starting) and Manual Structures
Even experienced engineers misinterpret certain sections. Based on maintenance error reports, here are pitfalls to avoid:
The ATR 72-600 maintenance manual 80 PDF 2021 includes the following key features:
Often caused by low starter voltage, incorrect fuel scheduling by the Hydromechanical Unit (HMU), or high tailwinds.