AMT 321 - Week 1: Development of Maintenance Programs and Maintenance Documentation

A complete set of vocabulary flashcards covering maintenance program development, MSG-3 task types, maintenance check intervals, and manufacturer, regulatory, and airline documentation from AMT 321 Week 1.

Hard Time (HT) Process

A failure preventive process that requires an item to be removed from the vehicle and either completely overhauled, partially overhauled (restored), or discarded before exceeding a specified interval.

On-Condition (OC) Process

A failure preventive process that requires an item to be periodically inspected or tested against an appropriate physical standard (such as wear or deterioration limits) to determine whether it can continue in service.

Condition Monitoring (CM) Process

A non-failure preventive process involving the monitoring of failure rates and removals of components or systems that do not have a definite lifetime or noticeable wear-out period, operating them to failure.

Task-Oriented Maintenance

An approach to maintenance that uses predetermined maintenance tasks to avoid in-service failures, sometimes using equipment redundancies to allow failures without adversely affecting safety and operation.

Bottom-Up Approach

The modern Maintenance Steering Group (MSG) approach to program development that analyzes individual components as the most likely causes of equipment malfunction.

Industry Working Groups (IWGs)

Six specialized groups used in the MSG process: (a) structures, (b) mechanical systems, (c) engine and auxiliary power plant (APU), (d) electrical and avionics systems, (e) flight controls and hydraulics, and (f) zonal.

Lubrication Task

An act of replenishing oil, grease, or other substances that maintains inherent design capabilities by reducing friction and/or conducting away heat.

Servicing Task

An act of attending to basic needs of components and/or systems for the purpose of maintaining their inherent design capabilities.

Functional Check

A quantitative check to determine if each function of an item performs within specified limits, which may require the use of additional equipment.

Operational Check

A failure-finding task that determines if an item is fulfilling its intended purpose without requiring quantitative tolerances or equipment other than the item itself.

Visual Check

An observation to determine if an item is fulfilling its intended purpose, serving as a failure-finding task that does not require quantitative tolerances.

Restoration Task

Work necessary to return an item to a specific standard, ranging from cleaning the unit or replacing a single part up to and including a complete overhaul.

Discard Task

The removal from service of any item at a specified life limit.

Zonal Maintenance Program

A program ensuring that all systems, wiring, mechanical controls, components, and installations contained within a specified zone on the aircraft receive adequate surveillance to evaluate security of installation and general condition.

Maintenance Review Board Report (MRBR)

An FAA-approved document published by the airframe manufacturer containing the initial scheduled maintenance program for U.S. certificated operators.

Daily Check

A scheduled maintenance check consisting of an engine oil level check performed between 15 and 30 minutes after engine shutdown to obtain an accurate reading.

48-Hour Check

A check containing tasks more detailed than daily checks, such as wheel and brake inspection, fluid replenishment (engine oil and hydraulic), APU oil replenishment and inspection, and general visual inspections of the fuselage, wings, interior, and flight deck.

Airplane Maintenance Manual (AMM)

A formal manufacturer document containing all basic information on the operation and maintenance of the aircraft and its on-board equipment.

Component Maintenance Manual (CMM)

A manual showing the detailed breakdown of all components that make a complete part on the aircraft.

Fault Isolation Manual (FIM)

A manual containing a set of fault isolation trees provided by the manufacturer to assist in troubleshooting, isolating fault sections, and pinpointing problems related to systems and components.

Component Location Manual (CLM)

A manual providing the location of all major equipment items on the aircraft.

Illustrated Parts Catalog (IPC)

A manual produced by the airframe manufacturer that includes list and location diagrams of all parts used on the aircraft across all systems.

Storage and Recovery Document (SRD)

A document containing information needed to address maintenance and servicing of aircraft that are out of service and stored for long periods of time.

Structural Repair Manual (SRM)

An airframe-specific manual providing aircraft skin details, specific tolerances, and procedures in the event of minor structural damage.

Maintenance Planning Data Document (MPD)

A document providing the airline operator with a list of maintenance and servicing tasks to be performed on the aircraft, containing all items of the MRB report along with other information.

Task Cards (TC)

Separate cards or sheets extracted from the AMM for removal/installation, testing, servicing, and maintenance actions so mechanics do not need to carry the entire manual to the aircraft.

Advisory Circulars (ACs)

Documents issued by the FAA to provide assistance and guidance to operators on meeting the requirements of various FARs.

Airworthiness Directives (ADs)

Substantial mandatory regulations issued by the FAA to correct an unsafe condition that exists in an aircraft, engine, propeller, or appliance.

Notice of Proposed Rule Making (NPRM)

An FAA process that indicates the intent to change or amend an existing Federal Aviation Regulation.

Engineering Orders (EOs)

Official airline documents required to authorize any maintenance work not covered in the standard maintenance plan developed from the MRB report or Ops Specs.

ATA Document Standards Numbering System

The Air Transport Association standardized numbering format divided into four element blocks: Chapter, Section, Subject, and Page Block.