发动机维修手册知识求助（Subtask 72-00-04-420-058）

huytvszlm · 发表于 2015-11-15 09:33:42

民航发动机维修手册中，task的编号与subtask的编号有什么规律吗，例如Subtask 72-00-04-420-058，代表什么意思。为什么要用task subtask 是ATA要求的吗

nodoubt · 发表于 2015-11-16 15:00:53

不光是发动机手册，所有的手册都是这个做法，XX-XX-XX-XXX-XXX
前面的XX-XX-XX是和你当前的手册的章节号一致，总不能你修的是72-00-04的东西，里面的subtask 给个55-22-34，后面的XXX-XXX不知道是怎么定义的，只有编手册的人知道了

每本手册都有Front Matter (前言)，有的手册会有介绍，里面也许会说明

280589687 · 发表于 2016-7-14 12:21:41

这叫 Maintenance Task Oriented Support System (MTOSS）

(1) In accordance with the ATA Specification 2200, this publication uses a Maintenance Task
Numbering System which make the maintenance procedures in this manual compatible with
an automated shop environment.
(2) The system uses standard and unique number combinations to identify maintenance tasks
and subtasks.
(3) The MTOSS structure is the logical approach to organizing maintenance tasks and subtasks.
The MTOSS numbering system includes the ATA Chapter-Section-Subject number as well as a
function code and unique identifiers. The purpose of incorporating the MTOSS numbering
system is to provide a means for the automated sorting, retrieval, and management of
digitized data.
(4) Section and Sub-section Numbering System
(a) All procedures in this publication have TASK and SUBTASK numbers at key data retrieval
points. The numbers provide the following:
• Identification of the hardware (part or parts) primary to the TASK
• Identification of the maintenance function applied to the part or parts
• A unique identifier for a set of instructions (known as TASK or SUBTASK)
• Identification of alternate methods and configuration differences that change the
procedure applied to the TASK
• Identification of airline changes to a TASK or SUBTASK.
(5) Components of Task and Subtask Number
(a) The numbering system is an expansion of the ATA three-element numbering system. The
number has seven elements. The first five elements are necessary for each TASK or
SUBTASK. The sixth and seventh elements are applied only when necessary. Refer to
Figure INTRO-2.
(b) Elements 1, 2, and 3 identify the ATA Chapter-Section-Subject number of the page block.
(c) Element 4 defines the maintenance function being performed. This element is a three
position element. The third position is zero filled when further definition is not required.
If required, the manufacturer will use the numbers 1 through 9 or letters A through Z,
excluding the letters I and O. Refer to Table INTRO-6.
(d) Element 5 provides a unique identification for each TASK or SUBTASK number which is
similarly numbered through the first four elements.
• TASKS are numbered from 801 through 999
• SUBTASKS are numbered from 001 through 800.
(e) Element 6 is a three position alphanumeric element used for identification of differences
in configurations, methods or techniques, variations of standard practice applications, etc.

(f) Element 7 provides coding of those tasks or subtasks that have been changed by the customer (e.g., those tasks or subtasks accomplished by an outside repair source).

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