2021 was a landmark year for ATR maintenance protocols. In December 2021, ATR received EASA approval to extend the intervals for Type C maintenance checks from 5,000 to 8,000 flight hours
The DC starter-generator generates immense heat during operation. Technicians must strictly observe the cooling intervals outlined in Chapter 80: Standard start cycle.
Manual amendments are frequently triggered by ADs targeting starter wiring modifications or GCU software updates.
Rotate the engine using the starter without introducing fuel or ignition to check for mechanical binding or to clear unburnt fuel.
To obtain the most accurate and legal version of the ATR 72-600 Maintenance Manual, follow these steps: atr 72600 maintenance 80 manual pdf 2021
Documentation for ATR MOD 7979 allowing weight increases for operations on unpaved runways.
(covering technical content) and the specific maintenance procedures. Manual Rev 3.0 (Sept 2021) : A significant revision for the ATR 72-600 was issued on September 17, 2021
The exact between the GCU and the starter-generator
Adhere strictly to the cooling periods between start attempts to prevent overheating the starter-generator windings. 2021 was a landmark year for ATR maintenance protocols
The ATR 72-600 can start its engines using three primary air sources, detailed in the 2021 manual: Auxiliary Power Unit (APU)
Utilizing a unverified, standalone PDF from 2021 for actual aircraft maintenance violates EASA (European Union Aviation Safety Agency) and FAA (Federal Aviation Administration) regulations. Maintenance must always be performed using the most current, effective revision provided by the OEM (Original Equipment Manufacturer).
The 2021 timeframe was significant for ATR 72 maintenance documentation. During this period, regulatory bodies like EASA were actively issuing directives to incorporate new or more restrictive maintenance instructions and airworthiness limitations for the ATR72 series. Furthermore, the "Time Limits Document (TLD)", a critical counterpart to the AMM, underwent revisions in 2021 (e.g., Revision 18). Therefore, a 2021 AMM would be a crucial tool for operators to maintain compliance with the latest airworthiness standards from that period.
[Inspect Starter Magnetic Drain Plugs] ➔ [Check Valve Manual Override Freedom] ➔ [Perform Leak Checks on Air Ducts] Visual Inspections Manual amendments are frequently triggered by ADs targeting
[Start Switch Engaged] │ ▼ [Starter-Generator Cranks High Pressure Compressor (Nh)] │ ▼ [At ~10% Nh -> Fuel Introduction & Ignition On] │ ▼ [Light-off Verification (ITT Rise)] │ ▼ [At ~45% Nh -> Starter Cutout & Generator Mode Engaged] Step-by-Step Breakdown:
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[Start Button Pressed] ──> Does Starter Engage? │ ├──> NO: Check GCU circuit breakers, start switches, and DC bus voltage. │ └──> YES: Does engine light up? │ └──> NO: Check Chapter 74 (Ignition) or fuel scheduling. Starter Fails to Rotate
Mandatory utilization of grounded wrist straps when touching or testing the engine electronic control (EEC) components connected to the starting circuit. 5. Navigating Digital Document Layouts (PDF Maintenance)