Canadair Regional Jet Chapter 71 Power Plant Aircraft Maintenance Manual – CF34−3A1 CF34−3B1

Description

Canadair Regional Jet Chapter 71 Power Plant Aircraft Maintenance Manual – CF34−3A1 CF34−3B1

This Canadair Regional Jet Chapter 71 Power Plant Aircraft Maintenance Manual – CF34−3A1 CF34−3B1 is a detailed maintenance reference devoted to ATA Chapter 71 power plant installation, supporting systems and related airframe-mounted components. The chapter covers the complete power plant assembly, nacelle and cowling structures, forward and aft engine mounting hardware, engine-related electrical harnesses, nose inlet-cowl installation and the drain and vent system. It also contains extensive procedures for power plant servicing, removal and installation, engine ground operation, inspections and operational checks.

The manual identifies installations using General Electric CF34−3A1 and CF34−3B1 high-bypass turbofan engines. A particularly important part of the chapter is its effectivity guidance surrounding Service Bulletin 601R−71−027. The manual instructs maintenance personnel to determine the actual engine configuration from the aircraft Service Bulletin records before selecting the applicable CF34−3A1 or CF34−3B1 procedure, because post-modification aircraft may have an engine combination that differs from a procedure’s normal effectivity indication.

File Details

• Manual type: Aircraft Maintenance Manual – Chapter 71 Power Plant
• Aircraft: Canadair Regional Jet
• Engines covered: General Electric CF34−3A1 and CF34−3B1
• Language: English
• Page count: 710 pages
• File format: PDF
• Master revision date: Dec 10/2005
• Temporary revision included: TR# 71−130, Feb 27/2006

Power Plant Maintenance Scope

The opening power plant section describes the twin power plant arrangement and the principal nacelle, mounting and accessory relationships. It explains how the nacelle incorporates the nose inlet cowl, translating cowls, core cowls, access panels, exhaust nozzle fairing and thrust reverser. The forward mounting arrangement uses a yoke connected to the aircraft structure, while the rear installation uses a thrust fitting and thrust mount to transmit engine thrust to the airframe.

The general Chapter 71 maintenance material goes well beyond component identification. It provides procedures for installing and removing the boot strap assembly, supporting the power plant with a sling, preservation and depreservation, complete power plant removal and installation, and the preparation needed before engine operation. Removal and installation work includes detailed job setup, tooling, access requirements, disconnection and reconnection steps, mount inspections and post-installation checks.

Engine Ground Operation and Functional Checks

A substantial portion of this Canadair Regional Jet power plant maintenance manual is dedicated to controlled engine operation after maintenance. Procedures cover engine operating limits, emergency and abnormal operating conditions, preparation for ground runs, prestart checks, engine starting, post-start checks, normal shutdown and post-run checks. Separate procedures are provided for dry and wet motor cycles, idle-speed adjustment and engine break-in running.

The inspection and test material supports troubleshooting and verification after maintenance. Included procedures cover acceleration and deceleration, N1 speed-control amplifier disable checks, bleed-air supply checks, thrust-reverser operational checks, Automatic Power Reserve operational checks, power assurance checks, oil-consumption checks and vibration monitoring. The chapter also includes fuel and oil leak checks, bleed-air leak checks, fan tie-down leak checks, field trim balancing for noise reduction and a core vibration check.

The procedures contain the precautions, job setup, reference tasks and configuration-dependent instructions needed to conduct these operations methodically. For example, the chapter warns against operating above specified engine conditions with particular cowl doors or nose access cowls open or removed, and it incorporates post-run inspections when leaks or abnormal indications are found.

Chapters Covered

• 71−00−00 Power Plant
  • Description and operation
  • Boot strap assembly installation and removal
  • Holding the power plant with the sling for maintenance
  • Preservation and depreservation of installed engines
  • Depreservation of new or overhauled engine fuel-system components
  • Power plant removal and installation
  • Engine operating limits
  • Engine emergency procedures and abnormal engine operation
  • Preparation for ground run and prestart checks
  • Engine start, shutdown and post-run checks
  • Engine dry motor and wet motor cycles
  • Idle speed adjustment and engine break-in run
  • Acceleration and deceleration check
  • N1 speed-control amplifier-disable check
  • Bleed-air supply check
  • Thrust-reverser operational check
  • Automatic Power Reserve operational check
  • Power assurance and oil consumption checks
  • Vibration, fuel/oil leak and bleed-air leak checks
  • Fan tie-down leak check, field trim-balance and core vibration check
• 71−10−00 Cowling
  • Nose inlet cowl and access cowls
  • Forward and fixed core-cowl assemblies
  • Translating cowl doors and core-cowl doors
  • Service pylon and nose-cowl side panel
• 71−11−01 Translating Cowl Doors
  • Opening and closing upper and lower doors
  • Upper and lower door removal and installation
  • Door adjustment and inspection
• 71−12−01 Core Cowl Doors
  • Opening and closing upper and lower core-cowl doors
  • Removal and installation
  • Latch adjustment
  • Inspection of core-cowl doors and blowout door
• 71−13−01 Fixed Core-Cowl Side Panel
  • Removal and installation
• 71−14−01 / 71−14−07 Nose Access Cowls and Alignment Stop Assembly
  • Upper and lower nose access-cowl removal and installation
  • Nose access-cowl inspection
  • Access-cowl alignment-stop assembly removal and installation
• 71−16−00 Forward Core Cowl
  • Removal and installation
  • Forward core-cowl inspection
• 71−20−00 Engine Mounts
  • Engine mount description and operation
  • Forward engine mount removal and installation
  • Forward engine mount, bolt and yoke inspections
  • Pylon spar inspection
  • Forward engine mount bolt cleaning and repair procedures
  • Forward engine mount link inspection
  • Aft engine-mount thrust-fitting removal, installation and inspection
  • Aft mount spherical bushing, housing and bearing removal and installation
  • Aft engine-mount thrust shaft removal, installation and inspection
• 71−30−00 Nacelle and Pylon Fireseals
  • Description
  • Inspection of power plant nacelle and pylon fireseals
• 71−50−00 Electrical Harness
  • Harness description and component details
  • Red and violet core-cowl harness removal and installation for left and right engines
  • Orange electrical harness removal and installation for left and right engines
  • Detailed visual inspections of red, violet and orange harnesses
  • Electrical connector cleaning
• 71−61−00 / 71−61−01 Nose Inlet-Cowl Assembly
  • Description and operation
  • Nose inlet-cowl assembly removal and installation
  • Thrust-reverser attach fitting inspection
  • Nose inlet-cowl visual inspection
• 71−70−00 / 71−71−01 Drain and Vent System
  • Drain and vent system description
  • Overboard drain assembly removal and installation
  • Drain manifold removal and installation
  • Engine drain mast inspection
  • Engine combustor overboard drain inspection

Taken together, these sections provide a working maintenance reference from access and preparation through component removal, installation, inspection, adjustment and return-to-service checks. The manual’s extensive effectivity statements are particularly useful when identifying which configuration-specific procedure applies to a particular aircraft or engine installation.

Cowling, Nacelle and Access Components

The cowling section explains the construction and purpose of the nacelle and then follows the individual assemblies into hands-on maintenance procedures. The nose inlet cowl directs smooth airflow to the engine fan and contains anti-ice ducting and installation provisions associated with thrust-reverser operation. Access cowls, fixed and forward core-cowl assemblies, translating cowl doors and core-cowl doors are illustrated and described before their applicable removal, installation, adjustment and inspection tasks.

This is useful when maintenance requires opening the nacelle for access as well as when the cowling itself requires adjustment or component replacement. Procedures distinguish upper and lower translating and core-cowl doors and include inspection of hardware such as latches, blowout-door areas and alignment components.

Engine Mounts and Structural Interfaces

The engine-mount coverage is one of the strongest technical sections in the manual. Illustrations identify the forward mount yoke, links, pins, retainers and mounting lugs, while the aft mount material identifies the engine thrust mount, thrust fitting, thrust shaft, spherical bearing and associated bushings. The manual provides forward engine mount removal and installation followed by detailed inspection tasks for the mount assembly, bolts and yoke.

Aft mounting coverage includes thrust-fitting and plug-assembly work, spherical bushing and bearing replacement, thrust shaft maintenance and detailed inspections. Procedures include defined torque values, clearances, inspection requirements, consumables and close-out operations where applicable. Temporary Revision 71−130, dated Feb 27/2006, revises the aft engine-mount thrust-fitting removal/installation pageblock and the installation procedure for the aft engine-mount thrust fitting.

Electrical Harness, Inlet Cowl and Drain System Work

Chapter 71 also contains substantial electrical installation information rather than simply referring the reader elsewhere. It covers the red and violet core-cowl master harnesses and the orange nose-cowl accessories harness, with separate left- and right-engine removal and installation procedures. Connector locations, clips and related engine components are identified in detailed illustrations, and the chapter includes visual inspection procedures and electrical connector cleaning.

The nose inlet-cowl section gives the removal and installation sequence for the complete inlet-cowl assembly, including lifting and handling precautions, attachment details and configuration-dependent alignment-stop provisions. Inspections cover the assembly itself and thrust-reverser attachment fittings. The drain and vent section then describes how fluids and gases are routed away from the nacelle and includes a system block diagram plus removal, installation and inspection procedures for the overboard drain assembly, drain manifold, drain mast and combustor overboard drain.

Service Bulletin and Effectivity Awareness

Maintenance personnel using this Canadair Regional Jet Chapter 71 manual should pay close attention to its aircraft and engine effectivity statements. Numerous tasks are divided by aircraft effectivity and modification status. The manual specifically highlights SB601R−71−027 because post-Service Bulletin aircraft can have combinations of CF34−3A1 and CF34−3B1 engines that require confirmation from the aircraft records before the appropriate maintenance procedure is selected. Other sections likewise identify pre- and post-Service Bulletin configurations when hardware or installation details differ.

Use This Manual for Power Plant Maintenance and Verification

The Canadair Regional Jet Chapter 71 Power Plant Aircraft Maintenance Manual – CF34−3A1 CF34−3B1 supports the practical work involved in removing and installing the power plant, servicing and preserving installations, carrying out controlled engine ground runs, checking engine performance and leaks, maintaining nacelle and cowling assemblies, inspecting and servicing engine mounts, replacing Chapter 71 electrical harnesses, removing the nose inlet cowl and maintaining the drain and vent system. Detailed procedures, effectivity information, illustrations, inspection criteria, torque data, precautions and post-maintenance checks help technicians follow the correct sequence for the applicable configuration rather than relying on incomplete general instructions.

Delivered as an instant PDF download after payment, there is no physical book and no shipping delay. The manual can be viewed on compatible computers, tablets and phones and pages can be printed when a paper reference is useful at the work location.