A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

REVISION: 01 

ALS Part 3 

- 

Certification Maintenance 

Requirements 

(CMR)

© AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

This document and all information contained herein is the sole property of AIRBUS SAS. No 

intellectual property rights are granted by the delivery of this document or the disclosure of its 

content. This document shall not be reproduced or disclosed to a third party (except for the 

purposes of performing the tasks described hereunder and provided that any recipient of such 

document shall comply with the conditions herein) without the express written consent of AIRBUS 

SAS. This document and its content shall not be used for any purpose other than that for which it is 

supplied. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

LIST OF EFFECTIVE PAGES

PART MVT PAGE ISSUE PART MVT PAGE ISSUE

ISSUE: JUN 15/12 ALS PART 3 PAGE: 1-LEP 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document.

3 R 1-LEP JUN 15/12 

3 1-TOC NOV 23/11 

3 R 1-ROR JUN 15/12 

3 R 2-ROR JUN 15/12 

3 N 3-ROR JUN 15/12 

3-0 1 NOV 23/11 

3-0 R 2 JUN 15/12 

3-0 R 3 JUN 15/12 

3-0 R 4 JUN 15/12 

3-0 R 5 JUN 15/12 

3-0 R 6 JUN 15/12 

3-0 R 7 JUN 15/12 

3-0 N 8 JUN 15/12 

3-1 R 1 JUN 15/12 

3-1 2 NOV 23/11 

3-1 3 NOV 23/11 

3-1 4 NOV 23/11 

3-1 5 NOV 23/11 

3-1 6 NOV 23/11 

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3-1 R 8 JUN 15/12 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

TABLE OF CONTENTS

SUBJECT PART

ISSUE: NOV 23/11 ALS PART 3 PAGE: 1-TOC 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

RECORD OF REVISIONS ROR 

INTRODUCTION 3-0 

CMR TASKS 3-1 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

RECORD OF REVISIONS

ISSUE: JUN 15/12 ALS PART 3 PAGE: 1-ROR 

EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

The European Aviation Safety Agency (EASA) Certification Directorate approves the 

ALS Part 3. Variations must also be approved (unless justified in accordance with a 

procedure stated herein). 

 

REVISION 

NUMBER SUB-PARTS APPROVED BY 

EASA EASA AD INSERTION IN MAINT. PROG. 

 00 ROR 

3-1 NOV 23/11 

N

N 01 ROR 

3-1 

JUN 15/12 

Note: The ALS Part 3 is covered by the Certification Document 00D050AM093/C01. 

Revision 01 is approved by EASA under reference 10040191. 

REVISION 01 COMPLIANCE TIME:

1. Except as stated in paragraph 4. and paragraph 5. of this Record Of Revisions (ROR), it is 

mandatory to comply with the maintenance requirements and airworthiness limitations 

defined in the sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 revision 01 from 15-

Jun-2013. 

2. From 23-Nov-2012 to 14-Jun-2013, it is mandatory to comply with the maintenance 

requirements and airworthiness limitations defined in, either: 

− The sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 at revision 00, except as 

stated in paragraph 5. of this ROR, 

or 

− The sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 at revision 01. 

3. From 15-Jun-2012 date to 22-Nov-2012, it is mandatory to comply with the maintenance 

requirements and airworthiness limitations defined in, either: 

− The CMR Document (EASA version) at issue 23, except as stated in paragraph 4. and 

paragraph 5. of this ROR, 

or 

− The CMR Document (FAA version) at issue 17, except as stated in paragraph 4. and 

paragraph 5. of this ROR, 

or 

R 

R 

R 

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R 

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N 

N 

N 

N 

N 

N 

R 

R

R 

R 

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A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

RECORD OF REVISIONS

ISSUE: JUN 15/12 ALS PART 3 PAGE: 2-ROR 

EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

− The sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 at revision 00, except as 

stated in paragraph 5. of this ROR, 

or 

− The sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 at revision 01. 

4. As declared in the previous revision dated 23-Nov-2011, it is mandatory to comply with the 

following requirements defined in the sub-part 3-1 of the A318/A319/A320/A321 ALS Part 3 

revision 00: 

4.1. For A318 OR A319 OR A320 PRE-MOD 37734 PRE-MOD 39020 OR A321 aircraft, first 

accomplishment of CMR task 213100-00001-1-C must be carried out no later than the 

aircraft accumulating 50000 FH since initial entry into service or the last accomplishment 

of MRBR task 21.31.00/06 or within 3 Months from 23-Nov-2011, whichever occurs the 

latest. 

4.2. For A320 POST-MOD 37734 PRE-MOD 39020, first accomplishment of CMR task 

213100-00001-2-C must be carried out no later than the aircraft accumulating 44000 FH 

since initial entry into service or the last accomplishment of MRBR task 21.31.00/06 or 

the last accomplishment of CMR task 213100-00001-1-C or within 3 Months from 23-

Nov-2011, whichever occurs the latest. 

4.3. For A320 aircraft which are POST-MOD 20139 PRE-MOD 22129 PRE-MOD 26925 

POST-MOD 31931, first accomplishment of CMR task 324000-00001-2-C must be 

carried out no later than the aircraft accumulating 5600 FH since the last accomplishment 

of MRBR task 32.40.00/08 or within 3 Months from 23-Nov-2011, whichever occurs the 

latest. 

5. It is mandatory to comply with the following requirements defined in the sub-part 3-1 of the 

A318/A319/A320/A321 ALS Part 3 revision 01: 

5.1. For A320 aircraft POST-MOD 39020, first accomplishment of CMR task 213100-00001-3-

C must be carried out no later than the aircraft accumulating 36000 FH since initial entry 

into service or the last accomplishment of MRBR task 21.31.00/06 or the last 

accomplishment of CMR task 213100-00001-1-C or CMR task 213100-00001-2-C or 

within 3 Months from 15-Jun-2012, whichever occurs the latest. 

5.2. For A320 aircraft which are PRE-MOD 26925 PRE-MOD 20139 OR PRE-MOD 26925 

POST-MOD 20139 POST-MOD 22129, first accomplishment of CMR task 324000-

00002-1-C must be carried out: 

• for aircraft having accumulated less than 60000 FH, no later than the aircraft 

accumulating 60000 FH since initial entry into service (Credit may be taken for the 

accomplishment of MRBR task 32.40.00/17 to claim compliance with this CMR task 

when the MRBR task is performed within the airworthiness limitations stated above). 

R 

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N 

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N 

N 

N 

N 

N 

N

N

N

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A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

RECORD OF REVISIONS

ISSUE: JUN 15/12 ALS PART 3 PAGE: 3-ROR 

EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

• for aircraft having accumulated more than 60000 FH, no later than the aircraft 

accumulating 60000 FH since the last accomplishment of ASM task 324400-0001-1-

E (revision 00 of A318/A319/A320/A321 ALS Part 4, sub-part 4-3-2) or MRBR task 

32.40.00/17 or within 3 Months from 15-Jun-2012, whichever occurs the latest. 

6. For tasks where the interval is changed the next accomplishment should be determined from 

previous accomplishment date. 

N

N

N

N 

R 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-0 PAGE: 1 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Sub-part 3-0 INTRODUCTION

From revision 24 and on, the content of: 

A318/A319/A320/A321 Certification Maintenance Requirements (CMR) Document 

(EASA version) (Referenced AI/ST4/993.436/88) 

applicable to all A318/A319/A320/A321 models, has been transferred to the 

A318/A319/A320/A321 Airworthiness Limitations Section (ALS) 

Part 3 

Certification Maintenance Requirements (CMR) 

From revision 18 and on, the content of: 

A318/A319/A320/A321 Certification Maintenance Requirements (CMR) Document 

(FAA version) (Referenced AI/ST4/995.061/89) 

applicable to all A318/A319/A320/A321 models operated under FAA regulations, has been 

transferred to the 

A318/A319/A320/A321Airworthiness Limitations Section (ALS) 

Part 3 

Certification Maintenance Requirements (CMR) 

This change is part of a process to provide Operators and Maintenance, Repair and Overhaul 

Organizations (MRO) with a series of stand-alone documents in a location dedicated to the 

limitations. 

The data provided under ALS Part 3 has been established with the following rules: 

1. SCOPE

Though not addressed by the paragraph H25.4 of Joint Aviation Requirements (JAR) 25 

Appendix H, CMRs may be considered as the systems equivalent to the structural 

Airworthiness Limitation Items. For this reason, it is considered appropriate to identify them as 

part of the ALS. This document constitutes the ALS Part 3 - Certification Maintenance 

Requirements. 

Compliance with the requirements stated in this document is mandatory. No person 

may operate an aircraft to which an ALS applies except in accordance with the 

requirements of that ALS, unless otherwise agreed with the Authority of the State of 

aircraft registry. 

This document is applicable from first delivery of an aircraft configuration into an 

Operator’s fleet. The starting time for CMR task intervals are defined in para 7 of this 

sub-section. Possible interval escalations must be justified in accordance with the 

procedure given in paragraph 6 of this sub-section. If a more restrictive CMR is issued 

on an aircraft configuration already in service, the requirement for existing Operators 

to follow the revised ALS Part 3 will normally be mandated by Airworthiness Directive 

(AD). 

Non-compliance could suspend the validity of the Airworthiness Certificate. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 2 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Airworthiness Directives dedicated to specific concerns may override the specific 

requirement(s) given in this document. 

The identification of CMR tasks in no way diminishes the importance of non-CMR tasks and 

changes to these are subject to normal practices and procedures agreed between the 

Operator and the Authority of the State of aircraft registry. 

2. APPLICABILITY

The applicability of this ALS Part 3 revision is restricted to the aircraft models listed below: 

 A318-111 A319-111 A320-111 A321-111 

 A318-112 A319-112 A320-211 A321-112 

 A318-121 A319-113 A320-212 A321-131 

 A318-122 A319-114 A320-214 A321-211 

 A319-115 A320-215 A321-212 

 A319-131 A320-216 A321-213 

 A319-132 A320-231 A321-231 

 A319-133 A320-232 A321-232 

 A320-233 

Note: The engine Time Limits and Maintenance Checks are not included in this manual: 

refer to the relevant Engine Manufacturer Chapter 05 manual. 

The CMRs contained in the ALS Part 3 are valid up to the following operational life 

applicable to A318/A319/A320/A321 systems installations: 

 Aircraft Series Flight Hours (FH) 

 A318-100 060000 FH 

 A319-100 Excluding Corporate Jet Operations 060000 FH 

 A319-100 Corporate Jet 077400 FH 

 A320-100 048000 FH 

R A320-200 PRE 37734 PRE 39020 060000 FH 

R A320-200 POST 37734 PRE 39020 080000 FH 

N A320-200 POST 39020 120000 FH 

 A321-100 060000 FH 

 A321-200 060000 FH 

Maintenance requirements and/or airworthiness limitations identified throughout ALS Part 3 

may be superseded by Ageing System Maintenance requirements identified within ALS Part 

4. In that case, it is Operator’s responsibility to consider the most restrictive of both 

requirements. 

Note: 

− MOD 37734 refers to Design Service Goal (DSG) extension of A320-200 aircraft from 

60000 FH up to 80000 FH (Intermediate Service Goal, ISG). 

− MOD 39020 refers to Design Service Goal (DSG) extension of A320-200 aircraft up to 

120000 FH (Extended Service Goal 1, ESG1). 

N 

N 

R 

R 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 3 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

3. MODIFICATIONS/REPAIRS NOT DEVELOPPED UNDER AIRBUS DOA CERTIFICATE 

EASA. 21J.031

If an aircraft/a sub-assembly/a component/an item has a modification or repair embodied that 

has not been developed under the Design Organisation Approval (DOA) Certificate EASA. 

21J. 031 (e.g. under a Supplemental Type Certificate) and which affects the content of the 

ALS Part 3, the Operator is responsible for obtaining approval by the relevant Airworthiness 

Authority for any necessary adaptations of the airworthiness limitations. 

When such an aircraft/a sub-assembly/a component/an item is transferred from one 

Owner/Operator to another, the associated approvals and documents indicating the 

necessary adaptations of airworthiness limitations must be transferred as well. 

4. ALTERNATIVE METHODS OF COMPLIANCE

Limitations of the ALS Part 3 may be negated by instructions given in an Alternative Method 

Of Compliance (AMOC). When limitations evolve in a revision of the ALS Part 3 subsequent 

to the issuance date of the AMOC, Operators are requested to contact Airbus for guidance. 

It is Operator’s responsibility to refer to the applicable limitations. 

5. CRITERIA FOR IDENTIFICATION

CMRs are tasks arising from the Type Certification process, which are associated with the 

most significant failure conditions. These have been shown to be necessary either by System 

Safety Assessment (e.g. JAR 25.1309 compliance) or, in a minority of cases, by engineering 

judgement. These requirements are allocated to one of two categories (identified as One Star 

or Two Star) in accordance with the EASA agreed methodology. 

Tasks associated with the following criteria are not identified as CMRs: 

− Tasks associated with qualitative assessment (unless specifically requested by EASA), 

− Tasks for which the maximum acceptable interval is in excess of the aircraft life, 

− Tasks normally accomplished by the flight crew, 

− Tasks considered being routine state of the art maintenance activity. For these, the safety 

reason for performing the task is considered to be immediately evident to the Operator 

and the Authority of the State of aircraft registry. 

6. HANDLING OF CERTIFICATION MAINTENANCE REQUIREMENTS

A. One Star CMRs (*) 

One Star CMRs specified in the ALS Part 3 are mandatory tasks and cannot be changed 

or deleted without the concurrence of the Primary Certification Authority (EASA). 

One Star CMR task intervals quoted in ALS Part 3 are absolute limitations and cannot be 

escalated without the concurrence of the Primary Certification Authority (EASA). 

B. Two Star CMRs (**) 

Two Star CMRs specified in the ALS Part 3 are mandatory tasks and cannot be changed 

or deleted without the concurrence of the Primary Certification Authority (EASA). 

R 
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ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 4 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Two Star CMR task intervals may be adjusted in accordance with an Operator's approved 

escalation practices or an approved reliability program, but the task content may not be 

changed or deleted without prior Primary Certification Authority (EASA) approval. 

This statement has been agreed on the basis that Operators with approved escalation 

practices or an approved reliability program make adjustments to their maintenance 

programs based on data collection and analytical techniques. It has been demonstrated 

that the use of such methods to manage a maintenance program does not give rise to 

undue escalation. 

7. STARTING TIME FOR CMR INTERVAL

This paragraph provides general rules related to the starting time to be considered for CMR 

interval counting according to the different usage parameters. 

For CMR tasks whose interval is given in Calendar time, the starting time may be considered 

as the date of Transfer of Title to the first Operator of the aircraft, unless otherwise stated in 

the delivery documentation of the dedicated aircraft. 

For CMR tasks whose interval is given in Flight Hours (FH), the starting time may be 

considered as the date of Transfer of Title to the first Operator of the aircraft, unless otherwise 

stated in the delivery documentation of the dedicated aircraft. 

Considering the very low number of Flight Hours performed between first flight and delivery, 

and the methodology used to define CMR task intervals, EASA agree to consider the date of 

delivery of the aircraft as the starting time for CMR tasks whose intervals are given in Flight 

Hours. 

For CMR tasks whose interval is given in Flight Cycles (FC), the starting time to be 

considered is the date of the aircraft first flight, unless otherwise stated in the delivery 

documentation of the dedicated aircraft. 

8. DEFINITIONS

Calendar time (Cal.): Thresholds/intervals in Years (Ye), Months (MO) etc... 

Flight Cycle (FC): A complete take-off and landing sequence. 

Flight Hour (FH): The accumulated time intervals between “wheels-off” and “wheelson”. 

Interval: The period expressed in usage parameters like FH and/or FC 

and/or Calendar time between successive accomplishments of a 

specific task. 

Operational Check: A qualitative check to determine that an item is fulfilling its 

intended purpose. It is a failure-finding task and does not require 

quantitative tolerances. 

Functional Check: A quantitative check to determine if one or more functions of an 

item perform within specified limits. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 5 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Visual check Observation to determine that an item is fulfilling its intended 

purpose. It is a failure finding task and does not require 

quantitative tolerances. 

 

Detailed lnspection: An intensive examination of a specific item, installation or 

assembly to detect damage, failure or irregularity. Available 

lighting is normally supplemented with a direct source of good 

lighting at an intensity deemed appropriate. Inspection aids such 

as mirrors, magnifying lenses, etc. may be necessary. Surface 

cleaning and elaborate access procedures may be required. 

First flight: Unless otherwise stated, the use of this term in the ALS Part 3 

implies that the life accumulated before the aircraft delivery 

date/transfer of title date (e.g. as a result of test flights) must be 

taken into account. 

9. EXCEPTIONAL SHORT-TERM EXTENSION

Since CMR intervals are based on statistical averages and reliability rates, an exceptional 

short-term extension for a specific CMR interval may be made on one aircraft for a limited 

period of time without jeopardising safety. 

The term 'exceptional short-term extension' is defined as an increase in a CMR interval that 

may be needed to cover an uncontrollable or unexpected situation. Repeated use of such 

extensions, either on the same aircraft or on similar aircraft in the Operator's fleet, should 

not be used as a substitute for good management practices. Short-term extensions must 

not be used for fleet CMR escalation. 

Unless noted adjacent to the task, for all CMRs (One Star and Two Star) identified in this 

ALS Part 3, it has been accepted by the Primary Certification Office (EASA) that short-term 

extensions up to the following maximum values may be granted without consultation with 

that office. Requests for extensions in excess of these values must be submitted with full 

justification to the Primary Certification Office (EASA) such that approval, if granted, can be 

given prior to their use. 

A. CMRs controlled by Flight Hours (FH)

Extensions up to 10% or 500 FH (whichever is the lesser) may exceptionally be 

granted on CMR intervals quoted in terms of Flight Hours. 

B. CMRs controlled by Flight Cycles (FC)

Extensions up to 5% or 250 FC (whichever is the lesser) may exceptionally be granted 

on CMR intervals quoted in terms of Flight Cycles. 

C. CMRs controlled by Calendar time (MO)

Where the repeat interval is 12 months or less, extensions up to 10% or 1 month 

(whichever is the lesser) may exceptionally be granted on CMR intervals quoted in 

terms of months. 

N 

N 

N 
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ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 6 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Where the repeat interval is greater than 12 months, extensions up to 2 months may 

exceptionally be granted. 

It is the Operator's responsibility to identify appropriate procedures with the Authority of the 

State of aircraft registry for the control and development of his maintenance program. 

This paragraph in the ALS Part 3 is written to confirm to the Authority of the State of aircraft 

registry that exceptional short-term extensions of CMR intervals are permissible. Approval 

of such extensions rests with the Authority of the State of aircraft registry in the same way 

as it does for any other scheduled maintenance task interval extension. 

10. EXPLANATION OF ALS SUB-PART 3-1 TABLE FORMAT

Rev 

code CMR Ref number CMR 

Cat. Task Description Interval

Related 

MRBR 

task 

number 

Applicability

1 2 3 4 5 6 7 

1 Rev Code

This column identifies the revision status of the CMR compared to the previous issue of 

the A318/A319/A320/A321 ALS Part 3: 

− N: New CMR 

− R: revised CMR 

− D: deleted CMR 

2 CMR Ref Number

XXXXXX-MEFYY-Z-C 

Where 

− XXXXXX is Maintenance Significant Item (MSI), 

− M is used to differentiate aircraft series in Airbus numbering system. As it is not 

applicable to A320 CMR references, it is always set to ‘0’ in this document, 

− E is engine/APU manufacturer identification. As it is not applicable to A320 CMR 

references, it is always set to ‘0’ in this document, 

− F is engine/APU type information when more than one engine from the same 

manufacturer is applicable to the program. As it is not applicable to A320 CMR 

references, it is always set to ‘0’ in this document, 

− YY is sequential number, 

− Z is for the technical solution applicable to a same task requirement, 

− C stands for CMR. 

3 CMR Cat

This column identifies the CMR categorisation: 

− CMR*: One Star CMR. 

− CMR**: Two Star CMR. 

4 Task description 

This column identifies the MSI title and the description of the task associated with the 

CMR. This reflects the Maintenance Review Board Report (MRBR) task wording where 

the identical task is required by the MRBR. 
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ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 7 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

5 Interval 

This column identifies the interval between successive accomplishments of the task. 

6 Related MRBR task number 

This column identifies the related MRBR task (if any) whose content covers the CMR 

requirement in terms of maintenance procedure. Nevertheless, differences may exist 

between the MRBR task and the CMR concerning the interval and the applicability. For 

compliance with CMR requirements, the ALS Part 3 provides the limiting values. 

7 Applicability 

This column indicates the aircraft type/series/model and modification status for which 

the task is applicable. Examples are given below: 

 Applicability Task applicable to

 ALL All A318, all A319, all A320 or all A321 aircraft. 

 

PRE nnnnn All A318 PRE MOD nnnnn, all A319 PRE MOD nnnnn, all A320 

PRE MOD nnnnn or all A321 PRE MOD nnnnn. 

i.e. Aircraft that do not have MOD nnnnn embodied. 

 

POST nnnnn All A318 POST MOD nnnnn, all A319 POST MOD nnnnn, all 

A320 POST MOD nnnnn or all A321 POST MOD nnnnn. 

i.e. to Aircraft that do have MOD nnnnn embodied. 

 A318 All A318 only. 

 A319 All A319 only. 

 A320 All A320 only. 

 A321 All A321 only. 

 A3xx 

PRE nnnnn 

All A3xx that do not have MOD nnnnn embodied. 

 A3xx 

POST nnnnn 

All A3xx that do have MOD nnnnn embodied. 

 

A318 

OR 

A319 

OR 

 A320 

POST 21414 

OR 

 A321 

All A318, or 

All A319, or 

All A320 that do have MOD 21414 embodied, or 

All A321 aircraft. 

 

A320 

POST 21708 

OR 

A321 

POST 21708 

All A320 that do have MOD 21708 embodied, or 

All A321 that do have MOD 21708 embodied. 

 

POST 23051 

POST 23061 

POST 23085 

All A318, all A319, all A320 or all A321 that do have MOD 23051 

embodied and MOD 23061 embodied and MOD 23085 embodied.

i.e. only to Aircraft with all MOD embodied. 

 POST 20040 All A318, all A319, all A320 or all A321 that do have MOD 20040 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-0 PAGE: 8 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

 Applicability Task applicable to

OR 

POST 20056 

embodied or MOD 20056 embodied. 

i.e. to Aircraft with one of the MOD or both MOD embodied. 

 POST 20040 

PRE 20057 

All A318, all A319, all A320 or all A321 that do have MOD 20040 

embodied and do not have MOD 20057 embodied. 

 FAA Only CMR limitation applicable only to US registered aircraft. 

 ALL 

Except FAA 

CMR applicable to all A318, all A319, all A320 or all A321 aircraft, 

exception made of US registered aircraft. 

END OF SUB-PART 3-0 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. Sub-part 3-1 CMR TASKS

 CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

 212800-00001-1-C CMR** CARGO COMPARTMENT, VENTILATION AND HEATING AND AFT CARGO 

COMPARTMENT GROUND COOLING SYSTEM OPERATIONAL CHECK OF THE GROUND COOLING ISOLATION VALVE TO 

VERIFY CLOSING IN CASE OF SMOKE WARNING 

06000 FH 21.2

R 213100-00001-1-C CMR** PRESSURE CONTROL AND MONITORING 

FUNCTIONAL CHECK OF POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES 

50000 FH 21.3

R 213100-00001-2-C CMR** PRESSURE CONTROL AND MONITORING 

FUNCTIONAL CHECK OF POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES 

44000 FH 21.3

N 213100-00001-3-C CMR** PRESSURE CONTROL AND MONITORING 

FUNCTIONAL CHECK OF POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES 

36000 FH 21.3

 242000-00001-1-C CMR* AC GENERATION 

OPERATIONAL CHECK OF STATIC INVERTER 

00090 FH 24.2
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

 CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

R 242000-00001-2-C CMR** AC GENERATION 

OPERATIONAL CHECK OF STATIC INVERTER 

00750 FH 24.2

 242000-00002-1-C CMR* AC GENERATION 

OPERATIONAL CHECK OF EMERGENCY GENERATING SYSTEM 

00120 FH 24.2

 242000-00002-2-C CMR* AC GENERATION 

OPERATIONAL CHECK OF EMERGENCY GENERATING SYSTEM 

00090 FH 24.2

R 262300-00001-1-C CMR** CARGO COMPARTMENT FIRE EXTINGUISHING 

CHECK FIRING CIRCUIT CONTINUITY 

12000 FH 26.2

26.2

R 262300-00002-1-C CMR** CARGO COMPARTMENT FIRE EXTINGUISHING 

CHECK FIRE EXTINGUISHING LINES FOR LEAKAGE AND OBSTRUCTION 

18000 FH 26.2
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

 271400-00001-1-C CMR** AILERON AND HYDRAULIC ACTUATION 

OPERATIONAL CHECK OF DAMPING MEASUREMENT BY BITE 

04000 FH 27.1

R 271400-00001-2-C CMR* AILERON AND HYDRAULIC ACTUATION 

OPERATIONAL CHECK OF DAMPING MEASUREMENT BY BITE 

00750 FH 27.1

R 271400-00002-1-C CMR** AILERON AND HYDRAULIC ACTUATION 

CHECK FLUID RESERVE PISTON POSITION WITH HYDRAULIC RESERVOIR 

DEPRESSURIZED 

 15000 FH 27.1

R 271400-00002-2-C CMR* AILERON AND HYDRAULIC ACTUATION 

CHECK FLUID RESERVE PISTON POSITION WITH HYDRAULIC RESERVOIR 

DEPRESSURIZED 

07500 FH 27.1

 273400-00001-1-C CMR** ELEVATOR AND HYDRAULIC ACTUATION 

OPERATIONAL CHECK OF DAMPING MEASUREMENT BY BITE 

04000 FH 27.3

R 273400-00001-2-C CMR* ELEVATOR AND HYDRAULIC ACTUATION 

OPERATIONAL CHECK OF DAMPING MEASUREMENT BY BITE 

00750 FH 27.3

R 273400-00002-1-C CMR** ELEVATOR AND HYDRAULIC ACTUATION 

CHECK FLUID RESERVE PISTON POSITION WITH HYDRAULIC RESERVOIR 

DEPRESSURIZED 

 15000 FH 27.3

R 273400-00002-2-C CMR* ELEVATOR AND HYDRAULIC ACTUATION 

CHECK FLUID RESERVE PISTON POSITION WITH HYDRAULIC RESERVOIR 

DEPRESSURIZED 

07500 FH 27.3
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

R 273400-00002-3-C CMR* ELEVATOR AND HYDRAULIC ACTUATION 

CHECK OF THE DIFFERENTIAL PRESSURE INDICATOR AND POSITION OF FLUID RESERVE PISTON OF ELEVATOR SERVOCONTROLS 

07500 FH 27.3

 274000-00001-1-C CMR* TRIMMABLE HORIZONTAL STABILIZER (THS) 

CHECK INTEGRITY OF THS ACTUATOR BALLSCREW SHAFT (PRIMARY AND SECONDARY LOAD PATH) 

12000 FH 27.4

R 274000-00002-1-C CMR** TRIMMABLE HORIZONTAL STABILIZER (THS) 

OPERATIONAL CHECK OF THS ACTUATOR WITH INDIVIDUAL HYDRAULIC SYSTEMS 

00750 FH 27.4

 274000-00003-1-C CMR** TRIMMABLE HORIZONTAL STABILIZER (THS) 

OPERATIONAL CHECK OF THS ACTUATOR JAMMING PROTECTION DEVICE 

04000 FH 27.4

R 275000-00001-1-C CMR** FLAPS 

OPERATIONAL CHECK OF WTB/POB AND CHECK OF FLAPS TRANSMISSION SHAFTING INTEGRITY, INCLUDING INSPECTION OF SEAL WITNESS DRAINS 

07500 FH 27.5

27.5

N 278000-00001-1-C CMR** LIFT AUGMENTING (SLATS) 

OPERATIONAL CHECK OF WTB/POB AND CHECK OF SLATS TRANSMISSION SHAFTING INTEGRITY, INCLUDING INSPECTION OF SEAL WITNESS DRAINS 

07500 FH 27.8
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

R 279000-00001-1-C CMR* ELECTRICAL FLIGHT CONTROL SYSTEM (EFCS) 

OPERATIONAL CHECK: - OF THE LOGICS ACTIVATING ELAC 1, ELAC 2 AND SEC. 1 STANDBY POWER SUPPLIES - TO CONFIRM ABILITY OF SEC. 1 AND SEC. 2 TO ACHIEVE PITCH CONTROL 

- TO CONFIRM ABILITY OF SIDESTICK PRIORITY FUNCTION 

00400 FH 27.9

R 281500-00001-1-C CMR** INTERCELL TRANSFER SYSTEM 

OPERATIONAL CHECK OF INDIVIDUAL TRANSFER VALVES TO ENSURE VALVE SHAFT ROTATES VALVE TO OPEN POSITION 

07500 FH 28.1

R 282100-00001-1-C CMR** MAIN FUEL PUMP SYSTEM 

OPERATIONAL CHECK TO ENSURE THAT BOTH CENTER TANK PUMPS FEED FOR 2 MINUTES AFTER ENGINE START 

06500 FH 28.2

R 282800-00001-1-C CMR** ADDITIONAL CENTER TANK TRANSFER SYSTEM 

OPERATIONAL CHECK OF ACT MANUAL TRANSFER SYSTEM NOTE: EMBODIMENT OF FQIC 7 (MOD 30229) OR LATER STANDARD CANCELS THE CMR STATUS. NOTE THAT FOR A321 POST 28653, FQIC 6 IS PERMITTED ONLY WITH ONE ACT REMOVED 

07900 FH 28.2

R 291000-00001-1-C CMR* MAIN/AUXILIARY POWER 

OPERATIONAL CHECK OF RAT MANUAL DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, FOLLOWED BY CHECK OF FILTER INDICATOR 

001500 FH 

OR 

8 MO 

(WHICHEVER 

COMES 

FIRST) 

29.1
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: NOV 23/11 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

R 291000-00001-2-C CMR* MAIN/AUXILIARY POWER 

OPERATIONAL CHECK OF RAT MANUAL DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, FOLLOWED BY CHECK OF FILTER INDICATOR AND DETAILED INSPECTION OF RAT BLADES FOR EVIDENCE OF PLATING CRACKS 

03600 FH 

OR 

18 MO 

(WHICHEVER 

COMES 

FIRST) 

29.129.1

R 291000-00001-3-C CMR* MAIN/AUXILIARY POWER 

OPERATIONAL CHECK OF RAT MANUAL DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, FOLLOWED BY CHECK OF FILTER INDICATOR 

03600 FH 

OR 

18 MO 

(WHICHEVER 

COMES 

FIRST) 

29.1

 291000-00002-1-C CMR* MAIN/AUXILIARY POWER 

OPERATIONAL CHECK OF RAT AUTOMATIC DEPLOYMENT 

03600 FH 

OR 

18 MO 

(WHICHEVER 

COMES 

FIRST) 

29.1

R 291000-00003-1-C CMR* MAIN/AUXILIARY POWER 

FUNCTIONAL CHECK TO MONITOR INTERNAL LEAK RATE OF BLUE HYDRAULIC SYSTEM 

7500 FH 29.1
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

 CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

 291000-00004-1-C CMR** MAIN/AUXILIARY POWER 

CHECK NITROGEN CHARGE PRESSURE ON THE BLUE MAIN SYSTEM ACCUMULATOR BY READING GAUGE 

00400 FH 29.1

 291000-00005-1-C CMR** MAIN/AUXILIARY POWER 

REMOVE RAM AIR TURBINE AGCM AND PUMP FOR BENCH TEST 

24000 FH 29.1

324000-00001-1-C CMR* WHEELS AND BRAKES 

OPERATIONAL CHECK OF ALTERNATE BRAKING SYSTEM 

06300 FH 32.4

 324000-00001-2-C CMR* WHEELS AND BRAKES 

OPERATIONAL CHECK OF ALTERNATE BRAKING SYSTEM 

05600 FH 32.4

N 324000-00002-1-C CMR* WHEELS AND BRAKES 

FUNCTIONAL CHECK OF BRAKE ACCUMULATOR SYSTEM 

60000 FH 32.4

 324500-00002-1-C CMR* WHEELS AND BRAKES 

FUNCTIONAL CHECK TO MONITOR INTERNAL LEAK RATE OF BRAKING SYSTEM COMPONENTS (PARK BRAKE SELECTOR VALVE, PRESSURE RELIEF VALVE AND ALTERNATE BRAKE SELECTOR VALVE) 

14800 FH 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ISSUE: JUN 15/12 ALS PART 3-1 

 EASA APPROVED 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

 CMR Ref number CMR Cat. Task Description Interval Re

M

Task 

 352000-00001-1-C CMR** PASSENGER (CHEMICAL) 

OPERATIONAL CHECK OF MANUAL MASK RELEASE 

08500 FH 35.2

 352000-00002-1-C CMR** PASSENGER (CHEMICAL) 

FUNCTIONAL CHECK OF AUTOMATIC MASK RELEASE, DETAILED INSPECTION OF MASKS AND VISUAL CHECK OF CHEMICAL OXYGEN GENERATORS 

24000 FH 35.2

 352000-00003-1-C CMR** PASSENGER (GASEOUS) 

REMOVE FOR FUNCTIONAL CHECK OF PRESSURE REGULATORS 

08000 FH 35.2

END OF SUB-PART 3-1 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-1 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

1- GENERAL

At the opportunity of the update of A318/A319A320/A321 CMR Documents issue 24 (EASA 

version) and issue 18 (FAA version), their contents were transferred to the ALS Part 3 revision 00. 

 

2- SUMMARY OF CHANGES

The following summarizes the changes with respect all issues of the A318/A319A320/A321

CMR Documents EASA version, FAA version and A318/A319A320/A321 ALS Part 3. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

1 

10 Mar 88 

First Issue. 

2 

8 Nov 88 

A320-211 added to Section 0 para 3. 

Tasks and intervals associated with MSI 29.10.00/29.20.00 changed. 

'Provisional' changed to 'whichever comes first'. 

Deletion of OPC of 'DC EMERG CONFIG' caution. 

Modified descriptions for tasks associated with MSI 26.16.00 and MSI 26.17.00. 

Deletion of tasks associated with MSI 52.10.00 and MSI 78.30.00. 

3 

26 Apr 89 

A320-231 added to section 0 para 3. 

4 

14 Nov 90 

A320-212 added to section 0 para 3. 

29.10/20.00 Inspection and discard of filter element deleted as a CMR. 

32.30.00 Task no longer a CMR. 

24.26.00 Task no longer a CMR. 

29.10/20.00 Task to check that check valve in blue electrical pump delivery line is not jammed 

open is deleted. 

29.10/20.00 Task to check nitrogen charge pressure on blue system accumulator is no longer 

a CMR when Mod 21414 is embodied. 

5 

18 Jul 91 

27.90.00 Task to test ELAC 2 power supply from battery reworded to better reflect 

requirements of System Safety Assessment. 

6 

21 Feb 92 

27.90.00 Task to confirm ability of SEC 1/2 to control elevator servo controls reworded to 

better reflect requirements of System Safety Assessment. 

7 

8 Jul 93 

A320-232 added to section 0 para 3. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-2 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

8 

27 Oct 94 

A321 CMR document 955.3305/93 fully integrated to create a single A320/A321 CMR 

document. Deletion of CMR status from the following A320 tasks using justification agreed for 

A321: 

- 26.16.00 Operational test of cargo compartment smoke detection by PTT to confirm panel 

indicator receives output from SDCU. 

- 26.17.00 Operational test of lavatory smoke detection by CFDS to confirm warnings can 

be displayed. 

- 26.22.00 Operational test of loop/squib. 

- 27.90.00 Operational test of sidestick priority function. 

- 28.24.00 Operational test of LP shut off valves and their controls to ensure no flow when 

selected closed with booster pump on. 

Change to CMR interval using justification agreed for A321: 

- 29.10/20.00 Operational test of RAT automatic deployment at 3600FH/18 mths (instead of 

3500FH/18 mths). 

- 26.16.00 Operational test of cargo compartment smoke detection by CFDS at 450 FH 

(instead of 400FH). 

- 27.14.00 and 27.34.00 Operational test of damping measurement by BITE at 4000FH 

(instead of 3500 FH). 

- 27.40.00 Operational test of THS actuator jamming protection device at 4000FH (instead 

of 3500FH). 

- 27.50/80.00 Operational test of WTB/POB etc at 4000FH (instead of 3500FH). 

- 32.40.00 Operational test of alternate braking system at 4000FH (instead of 3500FH). 

- 21.28/43.00 New CMR associated with ground cooling system option. 

Section 2 entirely rewritten to clarify structural limitations and remove any association with 

CMRs. 

9 

16 Feb 95 

A320-214 added to section 0 para 3. 

10 

15 Sept 

95 

A320-233 added to section 0 para 3. 

Ref numbers in TCDS added to section 0 para 1. 

29.10/20.00 Effectivity corrected to reflect inclusion of Mod 21414 in consolidation Mod 

21999. 

Section 2 updated to reflect replacement of the term "Fleet Leader Program 1 (FLP1) Limits" 

by "100% Limits" as agreed in Sept 1995 issue of the A320/A321 MRB Report. 

11 

21 Mar 96 

A319-111 and -112 added to section 0 para 3. 

A319 added to effectivity of the following tasks: 

One Star: 

- 29.10/20.00 RAT checks at 2400 FH/12 months 

- 24.00.00 Operational test of Emerg. Gen. Sys. 

Two Star: 

- 24.20.00 Operational test of Static Inverter 

- 24.20.00 Operational test of Emerg Generation System. Interval increased from 70 FH to 

120 FH. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-3 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

12 

30 May 96 

A319-113 and -114 added to Section 0 para 3. 

13 

10 Dec 96 

Document reformatted to permit direct inclusion in MRB Report Appendix 1. 

Section 2 'Structural Inspections' removed from CMR doc and introduced in new 

Airworthiness Limitations Section which now has dedicated reference and approval page. 

Note: Title changed to Structural Inspection Requirements in Feb 1997. 

Section 0, Para 1 ‘Scope’ modified to reflect removal of fatigue related structural inspections 

from CMR doc. 

Section 0, Para 2 ‘Definitions’ deleted. 

Section 1 retitled ‘CMR “One Star” tasks and Section 2 retitled 'CMR "Two Star" tasks'. 

Reference to corresponding MRB Report task numbers inserted. 

Three new CMR 'One Star' tasks added: 

- 242000: Operational test of Emergency Generation System (A320 Post Mod 24701) every 

90FH- 

- 242000: Operational test of Static Inverter (A320 Post Mod 24701) every 90FH. 

- 279000: CMR status of 400FH task changed from Two Star to One Star. 

One new CMR 'Two Star' task added: 

- 2910/2000: Remove Ram Air Turbine AGCM and Pump for bench test (A320) every 

24000FH. 

14 

28 Feb 97 

A319-131 and -132 added to Section 0 para 2 

A321-211 and -231 added to Section 0 para 2 

One new CMR "Two Star" task added: 

- 282800: Operational test of ACT manual transfer system (with either Mod 25040 or 25453) 

(A321-200) 

15 

30 Nov 98 

Identify ATA 24 & 29 CMRs associated with introduction on A320 of Sundstrand RAT (Mod 

27189) and associated electrical mod (Mod 28160). 

Identify increase in interval from 2400FH/12 mths to 3600 FH/18 mths for CMR One Star task 

associated with Sundstrand RAT. 

Delete CMR One Star requirement to check Sundstrand RAT blades with Mod 27014 

embodied. 

CMR Two Star tasks 281500 and 282100 made applicable to A319. 

In line with April 98 MRB Report revision: 

- the term 'test' is replaced by 'check'. 

- the interval of Two Star CMR task 261600 is increased from 450 FH to 500FH. 

- the intervals of Two Star CMR tasks 2750/8000, 281500 and 324000 are increased from 

4000 FH to 5000 FH. 

16 

27 May 99 

A319-115 and -133 added to Section 0, para 2. 

Reference to “Structural Inspection Requirements” changed to “Airworthiness Limitation 

Items”. 

Identify Two Star CMR associated with MSI 26.16.00 as applicable only with Mod 20057 or 

20059 embodied. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-4 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

17 

13 Aug 99 

One new One Star CMR associated with MSI 282800 added for A319 aircraft with Mod 28238 

embodied. This Mod introduces up to six ACTs (for corporate use) 

18 

28 Aug 00 

In paragraph 1 of Introduction, reference to AMM Chapter 5 corrected to read MPD Section 

9.1 

Effectivity of the first two One Star CMRs for MSIs 242000, the first three One Star CMRs for 

MSI 2910/2000 and the second Two Star CMR for MSI 2910/2000 updated to reflect Mod 

28413 

Effectivity of the third One Star CMR and the Two Star CMR for MSI 242000 updated to 

reflect Mod 28917 

MRB Report task reference for first three One Star CMRs for MSI 2910/2000 corrected MSI 

282800. Applicability updated to include Twin ACT installation in A321. 

Effectivity of existing CMR Two Star task is modified. 

Reference to FQIC standard added. For A321 Twin ACT, CMR is valid only if operator 

removes one ACT and installs FQIC 6. No CMR applicable if FQIC 7 (or later standard) is 

installed. 

Reference to Mod 25040 deleted (mod cancelled) 

19 

31 Aug 01 

A321-212, -213 and -232 added to section 0 para 2. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-5 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

20 

6 May 03 

A318-111 and -112 added to Sect. 0 para 2 

'Airbus Industrie' logo replaced by 'Airbus' logo on all pages. 

Page Issue / Date not modified by this change 

Section 0 revised to include modified para 4 and new para 5 

Correction of the following MRB Report task references further to MRBR revision : 

One Star CMRs: 

MSI 24.20.00 : 

242000-1a now 242000-15 

242000-1b now 242000-16 

242000-2b now 242000-18 

MSI 29.20.00 

2910/2000-7a now 291000-7 

2910/2000-7b now 291000-29 

2910/2000-7c now 291000-30 

2910/2000-8 now 291000-8 

2910/2000-12 now 291000-12 

Two Star CMRs : 

MSI 24.20.00 

242000-2a now 242000-17 

MSI 27.80.00 

2750/8000-4 now 275000-4 

MSI 29.20.00 

2910/2000-4 now 291000-4 

2910/2000-26 now 291000-26 

MSI 24.20.00 (One Star and Two Star): 

Applicability to A318 added 

MSI 28.15.00 (Two Star): 

Applicability to A318 added 

MSI 28.21.00 (Two Star): 

Applicability to A318 added 

MSI 32.40.00 (Two Star): 

Reference to 'Pre Mod 26925' added 

21 

10 Jul 03 

Ref no. of CMR doc in A318 TCDS added in Section 0, para 1 'Scope' 

MSI 32.40.00 (Two Star): 

New CMR added for aircraft with mod 26925. 

Functional check to monitor internal leakage rate of specific brake system components. 

Interval 24000FH. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-6 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

22 

20 Jan 05 

Section 0 Note within paragraph 1 relating to mandatory status of CMR document reworded 

for clarification. 

In paragraph 2, note added to explain applicability to corporate A319 operation. 

In paragraph 5, the maximum short term extension for tasks expressed in Flight Cycles 

reduced from 10% / 500FC to 5% / 250FC in line with JAA’s TGL N°26. 

Section 1 (One Star): 

MSI 242000: 

MRB Report reference of 120FH CMR corrected from 242000-17 to 242000-15 

MSI 2910/2000: 

 CMR that includes requirement for Visual Check of RAT blades changed to require a 

Detailed Inspection 

MSI 324000. 

New One Star CMR with 6300FH interval. Previously Two Star CMR with 5000FH interval. 

MSI 324000: 

New One Star CMR with interval 9000FH. Previously Two Star CMR with 24000FH interval 

and greater applicability 

Section 2 (Two Star) 

MSI 261600: 

CARGO COMPARTMENT SMOKE DETECTION deleted following removal of CMR status 

from task ‘Operational check of cargo compartment smoke detection by CFDS to confirm 

isolation valve latching circuit integrity (Post Mod 20057 or Post Mod 20059)’. MRB Report 

task 261600-2 remains valid. 

MSI 2750/8000: 

Interval increased from 5000FH to 6000FH. 

MSI 281500: 

Interval increased from 5000FH to 6000FH. 

MSI 324000: 

5000FH task requiring operational check of alternate braking in Pre Mod 26925 configuration 

is deleted. This task is now identified as a One Star CMR with interval 6300FH. 

MSI 324000: 

24000FH task requiring internal leakage check of braking system components in Post Mod 

26925 configuration is deleted. This task is now identified as a One Star CMR at 9000FH 

applicable only to aircraft fitted with more than two ACTs (post Mod 28238). 

MSI 352000: 

Two new CMRs added related to Passenger Chemical Oxygen. 

MSI 352001: 

New CMR added related to passenger Gaseous Oxygen (Mod 33125). 

General: 

DGAC replaced by EASA on all pages. Confidentiality statement added on all pages. Neither 

causes issue/date of page to change. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-7 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Issue/Rev 

Date Summary of Changes (CMR Document EASA version)

23 

15 Sep 05 

A318-121 and -122 added to Sect. 0 para 2 

Clarification to Section 0, para 4.2. The word ‘content’ is added. 

‘DGAC’ replaced by ‘EASA’ in two places in Sect. 0 para 4 and two places in Sect. 0 para 5. 

MSI 282800 (One Star). 

ADDITIONAL CENTER TANK TRANSFER SYSTEM (A319 Mod 28238 – multiple ACT 

installation) deleted. 

Task ‘Remove relay 98QH for continuity check every 47000FH’ no longer required. 

MSI 275000/278000 (Two Star). 

MRB Report reference 278000-4 added. 

24 

23 Nov 11 

Last issue: The content of the A318/A319/A320/A321 CMR Document (EASA version 

referenced AI/ST4/993.436/88) applicable to A318/A319/A320/A321 models, has been 

transferred to the A318/A319/A320/A321 Airworthiness Limitations Section (ALS) Part 3 

Certification Maintenance Requirements (CMR). 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-8 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (CMR Document FAA version)

1 

20 Jun 89 

First Issue. 

2 

14 Nov 90 

A320-212 added to Section 0 para 3. 

29.10/20.00 Inspection and discard of filter element no longer a CMR. 

32.30.00 Task no longer a CMR. 

24.26.00 Task no longer a CMR. 

29.10/20.00 Task to check that check valve in blue electrical pump delivery line is not jammed 

open is deleted. 

29.10/20.00 Task to check nitrogen charge pressure on blue system accumulator is no longer 

a CMR when Mod 21414 is embodied. 

3 

18 Jul 91 

27.90.00 Task to test ELAC 2 power supply from battery reworded to better reflect 

requirements of System Safety Assessment. 

4 

21 Feb 92 

27.90.00 Task to confirm ability of SEC 1/2 to control elevator servo controls reworded to 

better reflect requirements of System Safety Assessment. 

5 

27 Oct 94 

Text and CMRs common to both DGAC and FAA documents revised to reflect changes 

agreed by DGAC at time of A321 Type Certification. 

Deletion of CMR status from the following tasks: 

- 27.90.00 Operational test of sidestick priority function. 

- 26.16.00 Operational test of cargo compartment smoke detection by PTT to confirm panel 

indicator receives output from SDCU. 

- 26.17.00 Operational test of lavatory smoke detection by CFDS to confirm warnings can be 

displayed. 

- 26.22.00 APU Fire Extinguishing - Operational test of loop/squib. 

- 28.24.00 Operational test of LP shut off valves and their controls to ensure no flow when 

selected closed with booster pump on. 

Change to CMR interval of the following tasks: 

- 29.10/20.00 Operational test of RAT automatic deployment at 3600FH/18 mths (instead of 

3500FH/18 mths). 

- 26.16.00 Operational test of cargo compartment smoke detection by CFDS at 450FH 

(instead of 400FH). 

- 27.40.00 Operational test of THS actuator jamming protection device at 4000FH (instead of 

3500FH). 

- 27.50/80.00 Operational test of WTB/POB etc at 4000FH (instead of 3500FH) 

- 32.40.00 Operational test of alternate braking system at 4000FH (instead of 3500FH). 

21.28/43.00 New CMR associated with ground cooling system option. 

Section 2 entirely rewritten to clarify structural limitations and remove any association with 

CMRs. 

6 

26 Oct 95 

A320-233 added to Section 0 para 3. 

29.10/20.00 Effectivity corrected to reflect inclusion of Mod 21414 in consolidation Mod 

21999. 

Section 2 updated to reflect replacement of the term "Fleet Leader Program 1 (FLP 1) Limits" 

by "100% Limits" as agreed in Sept 1995 issue of the A320/A321 MRB Report. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-9 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (CMR Document FAA version)

7 

07 Jun 96 

A320-232, A321-111, A321-112, A321-131, A319-111, A319-112, A319-113 and A319-114 

added to Section 0 para 3. 

New CMRs specific to A319/A321 added: 

- 24.20.00 AC Generation. Opt of Emerg Gen. Sys every 120 FH (CMR One Star) 

- 24.20.00 AC Generation. Opt of Static Inverter every 500 FH 

(CMR Two Star) 

- 29.10/20.00 Main and Auxiliary Hyd. Power. Opt of RAT manual deployment and functional 

test of RAT etc every 2400 FH/12 Months (CMR One Star) 

The following tasks are identified as A320 only: 

- 28.15.00 Opt of individual transfer valves 

- 28.21.00 Main Fuel Pump System task at 6500 FH 

- 29.10/20.00 Task at interval 1200 FH/6 Month and task at interval 400 FH 

Intervals revised for the following One Star tasks: 

- 27.14.00: 

400 FH goes to 500 FH 

4000 FH goes to 5000 FH 

- 27.34.00: 

400 FH goes to 500 FH 

both 4000 FH tasks go to 5000 FH. 

Task 28.15.00 Intercell Transfer Sys (Pre Mod 21462) Opt of intercell transfer valves every 22 

FH deleted. 

8 

10 Dec 96 

Document reformatted to permit direct inclusion in MRB Report Appendix 1. Section 2 

'Structural Inspections' removed from CMR doc and introduced in new Airworthiness 

Limitations Section (common for DGAC and FAA) which now has dedicated reference and 

approval page. 

Note: Title changed to Structural Inspection Requirements in Feb 97. 

Section 0, Para 1 'Scope' modified to reflect removal of fatigue related structural inspections 

from CMR doc. Ref numbers in TCDS added. 

Section 0, Para 2 'Definitions' deleted. 

Section 0, Para 3 'Applicability' becomes Para 2. Model A320-214 added. Models A319-111, -

113 and -114 deleted (not yet FAA certificated). 

Section 1 retitled ‘CMR “One Star” tasks’ and Section 2 retitled ‘CMR “Two Star” tasks’. 

Reference to corresponding MRB Report task numbers inserted. 

Two new CMR 'One Star' tasks added: 

- 242000: Operational test of Emergency Generation System (A320 Post Mod 24701) every 

90FH 

- 242000: Operational test of Static Inverter (A320 Post Mod 24701) every 90FH 

One new CMR 'Two Star' task added: 

- 2910/2000: Remove Ram Air Turbine AGCM and Pump for bench test (A320) every 

24000FH. 

9 

31 Mar 97 

A319-111, -113, -114, -131 and -132 added to Section 0 para 2. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-10 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (CMR Document FAA version)

10 

27 Jun 97 

A321-211 and –231 added to Section 0 para 2. 

One new CMR 'Two Star' task added: 

- 282800: Operational test of ACT manual transfer system (with either Mod 25040 or 35453) 

(A321-200) 

11 

30 Nov 98 

Identify ATA 24 & 29 CMRs associated with introduction on A320 of Sundstrand RAT (Mod 

27189) and associated electrical mod (Mod 28160). 

Identify increase in interval from 2400 FH/12 mths to 3600 FH/18 mths for CMR One Star 

task associated with Sundstrand RAT. 

Delete CMR One Star requirement to check Sundstrand RAT blades with Mod 27014 

embodied. 

CMR Two Star tasks 281500 and 282100 made applicable to A319. 

In line with April 98 MRB Report revision: 

- the term 'test' is replaced by 'check' 

- the interval of Two Star CMR task 261600 is increased from 450 FH to 500 FH 

- the intervals of Two Star CMR tasks 2750/8000, 281500 and 324000 are increased from 

4000 FH to 5000 FH. 

12 

27 May 99 

A319-115 and –133 added to section 0, para 3 

Reference to “Structural Inspection Requirements” changed to Airworthiness Limitation 

Items”. 

Identify Two Star CMR associated with MSI 26.16.00 as applicable only with Mod 20057 or 

20059 embodied. 

13 

22 Oct 99 

One new One Star CMR associated with MSI 282800 added for A319 aircraft with Mod 28238 

added. This mod introduces up to six ACTs (for corporate use) 

14 

28 Aug 00 

In paragraph 1 of Introduction, reference to AMM Chapter 5 corrected to read MPD Section 

9.1 

Effectivity of the first two One Star CMRs for MSIs 242000, the first three One Star CMRs for 

MSI 2910/2000 and the second Two Star CMR for MSI 2910/2000 updated to reflect Mod 

28413 

Effectivity of the third One Star CMR and the Two Star CMR for MSI 242000 updated to 

reflect Mod 28917 

MRB Report task reference for first three One Star CMRs for MSI 2910/2000 corrected 

MSI 282800. Applicability updated to include Twin ACT installation in A321. Effectivity of 

existing CMR Two Star task is modified. Reference to FQIC standard added. For A321 Twin 

ACT, CMR is valid only if operator removes one ACT and installs FQIC 6. No CMR applicable 

if FQIC 7 (or later standard) is installed. 

Reference to Mod 25040 deleted (mod cancelled) 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-11 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (CMR Document FAA version)

15 

10 Jul 03 

Ref no. of CMR doc in A318 TCDS added in Section 0, para 1 'Scope' 

A318-111, -112, A321-212, -213 and -232 added to section 0 para 2 

On every page the 'Airbus Industrie' logo is replaced by 'Airbus' logo and A318 added to 

document title. Page Issue / Date not modified by these changes 

Section 0 revised to include modified para 4 and new para 5 

Correction of the following MRB Report task references further to MRBR revision : 

One Star CMRs: 

MSI 24.20.00 : 

 242000-1a now 242000-17 

 242000-1b now 242000-16 

 242000-2b now 242000-18 

 MSI 29.20.00 

 2910/2000-7a now 291000-7 

 2910/2000-7b now 291000-29 

 2910/2000-7c now 291000-30 

 2910/2000-8 now 291000-8 

 2910/2000-12 now 291000-12 

Two Star CMRs : 

 MSI 24.20.00 

 242000-2a now 242000-17 

 MSI 27.50/80.00 

 2750/8000-4 now 275000-4 

 MSI 29.20.00 

 2910/2000-4 now 291000-4 

 2910/2000-26 now 291000-26 

MSI 24.20.00 (One Star and Two Star): Applicability to A318 added 

MSI 28.15.00 (Two Star) 

Applicability to A318 added 

MSI 28.21.00 

Applicability to A318 added 

MSI 32.40.00 (Two Star): Reference to 'Pre Mod 26925' added to operational check. 

MSI 32.40.00 (Two Star): New CMR added for aircraft with mod 26925. Functional check to 

monitor internal leakage rate of specific brake system components. Interval 24000FH. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-12 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (CMR Document FAA version)

16 

20 Jan 05 

Section 0

Note within paragraph 1 relating to mandatory status of CMR document reworded for 

clarification 

In paragraph 2, note added to explain applicability to corporate A319 operation 

In paragraph 5, the maximum short term extension for tasks expressed in Flight Cycles 

reduced from 10% / 500FC to 5% / 250FC in line with JAA’s TGL N°26. 

Section 1 (One Star)

MSI 242000. MRB Report reference of 120FH CMR corrected from 242000-17 to 242000-15 

MSI 273400. Task reworded to be in line with new task added in 2004 MRB Report. Original 

wording was ‘Check of return relief valve by reference to the differential pressure indicator 

and check ability of fluid reserve piston to fully retract’. Ref to MRBR task added. 

MSI 2910/2000. CMR that includes requirement for Visual Check of RAT blades changed to 

require a Detailed Inspection 

MSI 324000. New One Star CMR with 6300FH interval. Previously Two Star CMR with 

5000FH interval. 

MSI 324000. New One Star CMR with interval 9000FH. Previously Two Star CMR with 

24000FH interval and greater applicability. 

Section 2 (Two Star)

MSI 261600 CARGO COMPARTMENT SMOKE DETECTION deleted following removal of 

CMR status from task‘Operational check of cargo compartment smoke detection by CFDS to 

confirm isolation valve latching circuit integrity (Post Mod 20057 or Post Mod 20059)’. MRB 

Report task 261600-2 remains valid. 

MSI 2750/8000. Interval increased from 5000FH to 6000FH 

MSI 281500. Interval increased from 5000FH to 6000FH 

MSI 324000. 5000FH task requiring operational check of alternate braking in Pre Mod 26925 

configuration is deleted. This task is now identified as a One Star CMR with interval 6300FH 

MSI 324000. 24000FH task requiring internal leakage check of braking system components in 

Post Mod 26925 configuration is deleted. This task is now identified as a One Star CMR at 

9000FH applicable only to aircraft fitted with more than two ACTs (Post Mod 28238). 

MSI 352000. Two new CMRs added related to Passenger Chemical Oxygen 

MSI 352001. New CMR added related to Passenger Gaseous Oxygen (Mod 33125) 

General: Confidentiality statement added on all pages. This does not cause issue / date of 

page to change. 

17 

15 Sep 05 

A318-121 and -122 added to Sect. 0 para 2 

Clarification to Section 0, para 4.2. The word ‘content’ is added. 

‘DGAC’ replaced by ‘EASA’ in two places in Sect. 0 para 4 and two places in Sect. 0 para 5. 

MSI 282800 (One Star). ADDITIONAL CENTER TANK TRANSFER SYSTEM (A319 Mod 

28238 – multiple ACT installation) deleted. Task ‘Remove relay 98QH for continuity check 

every 47000FH’ no longer required. 

MSI 275000/278000 (Two Star). MRB Report reference 278000-4 added. 

18 

23 Nov 11 

Last issue: The content of the A318/A319/A320/A321 CMR Document (FAA version 

referenced AI/ST4/995.061/89) applicable to A318/A319/A320/A321 models, has been 

transferred to the A318/A319/A320/A321 Airworthiness Limitations Section (ALS) Part 3 

Certification Maintenance Requirements (CMR). 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-13 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

ALS Part 3 Revision 00 has been reformatted, compared to A318/A319/A320/A321 CMR 

Document Issue 23 (EASA version) and Issue 17 (FAA version). 

This document is divided into the following sub-parts: 

o Sub-part 3-0, which includes the introduction and generic paragraphs related to CMR. 

o Sub-part 3-1, which provides the list of CMR tasks in a single CMR table. 

Summary of Changes have been transferred to Appendix 1 of this document. 

A list of Abbreviations is appended in Appendix 2 of this document. 

Revision 00 introduces in the ROR: a paragraph titled “Revision 00 compliance time”. 

Sub-part 3-0

- Revision 00 introduces the following information: 

· §2: Addition of the Limit of Validity of CMR contained in the ALS Part 3 depending on 

the A318/A319/A320/A321 aircraft series. 

· §2: A320-215 and A320-216 models added. 

· Addition of paragraphs “3- Modifications/Repairs not developed under Airbus DOA 

Certificate EASA. 21J.031”, “4- Alternative Methods Of Compliance”, “7- Starting time for CMR 

interval” and “8-Definitions”. 

· Addition of paragraph “10- Explanation of ALS Sub-part 3-1 table format”, which details 

the new presentation of CMR tasks. 

- Following wording modifications have been performed: 

· Addition of the sentence “From revision 24 and on, the content of 

A318/A319/A320/A321 Certification Maintenance Requirements (CMR) Document (EASA 

version) (Referenced AI/ST4/993.436/88) applicable to all A318/A319/A320/A321 models, has 

been transferred to the A318/A319/A320/A321Airworthiness Limitations Section (ALS) Part 3 

Certification Maintenance Requirements (CMR).”. 

· Addition of the sentence “From revision 18 and on, the content of 

A318/A319/A320/A321 Certification Maintenance Requirements (CMR) Document (FAA 

version) (Referenced AI/ST4/995.061/89) applicable to all A318/A319/A320/A321 models

operated under FAA regulations, has been transferred to the 

A318/A319/A320/A321Airworthiness Limitations Section (ALS) Part 3 Certification Maintenance 

Requirements (CMR).”. 

· Addition of the sentence “This change is part of a process to provide Operators and 

Maintenance, Repair and Overhaul Organizations (MRO) with a series of stand-alone 

documents in a location dedicated to the limitations.”. 

· Addition of the sentence “The data provided under ALS Part 3 has been established 

with the following rules:”. 

. §1: The sentence: “These, together with the structure safe life limits (given in Section 

9.1 of the Maintenance Planning Document) and the fatigue related structural inspections 

arising from the damage tolerance evaluation (given in the Airworthiness Limitation Items 

document - see Appendix 1c of the MRB Report), satisfy the requirements given in JAR Part 

25.” has been reworded into “Though not addressed by the paragraph H25.4 of Joint Aviation 

Requirements (JAR) 25 appendix H, CMRs may be considered as the systems equivalent to the 

structural Airworthiness Limitation Items. For this reason, it is considered appropriate to identify 

them as part of the ALS.”. 

· §1: “contains” has been replaced by “constitutes”. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-14 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

(continued) 

. §1: Addition of the sentence “Compliance with the requirements stated in this document 

is mandatory. No person may operate an aircraft to which an ALS applies except in accordance 

with the requirements of that ALS, unless otherwise agreed with the Authority of the State of 

aircraft registry.“. 

· §1: The sentence “At first delivery of an aircraft configuration into an Operator’s fleet, 

the requirements given in this document are mandatory, except in so far that interval escalations 

can be justified in accordance with the procedure stated herein.” has been replaced by “This 

document is applicable from first delivery of an aircraft configuration into an Operator's fleet. The 

starting times for CMR task intervals are defined in para 7 of this sub-section. Possible interval 

escalations must be justified in accordance with the procedure given in paragraph 6 of this subsection.”. 

· §1: Change “Non-compliance suspends the validity of the Airworthiness Certificate” into 

“Non-compliance could suspend the validity of the Airworthiness Certificate.”. 

· §1: “agreed” added in the sentence “The identification of CMR...”. 

· §1: “his national authorities” replaced by “the Authority of the State of aircraft registry”. 

· §1: The sentence “This document does not take into account Airworthiness Directives 

(Consigne de Navigabilité) which, if issued against a CMR, supersede the specific requirement 

given in this document.” has been reworded into “Airworthiness Directives dedicated to specific 

concerns may override the specific requirement(s) given in this document.”. 

. §1: The sentence “This document is referenced in the Type Certificate Data Sheet 

under number 00P050A0008/C11 (A318), 00J050A0008/C11 (A319), 00D050A0008/C11 

(A320) and 00E050A0008/C11 (A321).” has been deleted. 

. §2: Introduction sentence “The document covers the following A318/A319/A320/A321 

models:” is replaced by the following sentence “The applicability of this ALS Part 3 revision is 

restricted to the aircraft models listed below:” 

. §2: Addition of the sentence “Note: The engine Time Limits and Maintenance Checks 

are not included in this manual: refer to the relevant Engine Manufacturer Chapter 05 manual.”. 

. §2: Addition of the sentence “The CMRs contained in the ALS Part 3 are valid up to the 

following Limit of Validity (LOV):”. 

. §2: Addition of the sentence “Maintenance requirements and/or airworthiness limitations 

identified throughout ALS Part 3 may be superseded by Ageing System Maintenance 

requirements identified within ALS Part 4. In that case, it is Operator’s responsibility to consider 

the most restrictive of both requirements.”, in order to clarify relationships between ALS Parts 3 

and 4. 

. §2: The sentence “Note: This document is applicable to A319 aircraft used in the 

corporate role. Since the name ‘A319CJ’ and ‘A319 Corporate Jet’ are unofficial, CMRs specific 

to corporate operation are identified with applicability ‘post mod 28238’. This modification 

introduces provision for more than two additional center tanks and thus identifies aircraft for 

which a longer flight time is possible. Intervals for corporate operation are determined in 

recognition of a higher average flight time than airline operation.” has been deleted. 

· §4 Addition of the following sentences “Limitations of the ALS Part 3 may be negated by 

instructions given in an Alternative Means Of Compliance (AMOC). When limitations evolve in a 

revision of the ALS Part 3 subsequent to the issuance date of the AMOC, Operators are 

requested to contact Airbus for guidance. It is Operator’s responsibility to refer to the applicable 

limitations.”. 

· §5: The sentence “Certification Maintenance Requirements (CMRs) are tasks arising 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-15 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

(continued) 

from Systems Safety Assessment which are associated with the most significant failure 

conditions. These requirements are allocated to two categories (identified as one star or two 

star) according to the failure condition consequences and the sensitivity of the safety objective 

to interval increase.” has been reworded “CMRs are tasks arising from the Type Certification 

process, which are associated with the most significant failure conditions. These have been shown 

to be necessary either by System Safety Assessment (e.g. JAR 25.1309 compliance) or, in a 

minority of cases, by engineering judgement. These requirements are allocated to one of two 

categories (identified as One Star or Two Star) in accordance with the EASA agreed 

methodology.”. 

· §5: “(unless specifically requested by EASA)” added. 

. §5: “aircraft life” replaced by “the LOV”. 

· §5: “tasks associated with conventional equipment not requiring detailed understanding 

of their operating philosophy to appreciate consequences of failure (e.g the oxygen system and 

fire bottles may fall into this category)” replaced by “Tasks considered being routine state of the 

art maintenance activity. For these, the safety reason for performing the task is considered to be 

immediately evident to the Operator and the Authority of the State of aircraft registry”. 

· §6.A: The sentence “The tasks and intervals specified in the CMR document are 

mandatory and cannot be changed, escalated or deleted without the concurrence of the Primary 

Certification Authority (EASA).” is replaced by “One Star CMRs specified in the ALS Part 3 are 

mandatory tasks and cannot be changed or deleted without the concurrence of the Primary 

Certification Authority (EASA). One Star CMR task intervals quoted in ALS Part 3 are absolute 

limitations and cannot be escalated without the concurrence of the Primary Certification 

Authority (EASA).”. 

· §6.B: The sentence “Task intervals may be adjusted in accordance with an operator's 

approved escalation practices or an approved reliability program, but the task content may not 

be changed or deleted without prior Primary Certification Authority (EASA) approval.” is 

replaced by “Two Star CMRs specified in the ALS Part 3 are mandatory tasks and cannot be 

changed or deleted without the concurrence of the Primary Certification Authority (EASA). Two 

Star CMR task intervals may be adjusted in accordance with an Operator's approved escalation 

practices or an approved reliability program, but the task content may not be changed or deleted 

without prior Primary Certification Authority (EASA) approval.” 

· §7: Addition of the following sentences “This paragraph provides general rules related to 

the starting time to be considered for CMR interval counting according to the different usage 

parameters. For CMR tasks whose interval is given in Calendar time, the starting time may be 

considered as the date of Transfer of Title to the first Operator of the aircraft, unless otherwise 

stated in the delivery documentation of the dedicated aircraft. For CMR tasks whose interval is 

given in Flight Hours (FH), the starting time may be considered as the date of Transfer of Title to 

the first Operator of the aircraft, unless otherwise stated in the delivery documentation of the 

dedicated aircraft. Considering the very low number of Flight Hours performed between first 

flight and delivery, and the methodology used to define CMR task intervals, EASA agree to 

consider the date of delivery of the aircraft as the starting time for CMR tasks whose intervals 

are given in Flight Hours. For CMR tasks whose interval is given in Flight Cycles (FC), the 

starting time to be considered is the date of the aircraft first flight, unless otherwise stated in the 

delivery documentation of the dedicated aircraft.”. 

· §8: Addition of the definitions of the following terms used in the document: Calendar 

time (Cal.), Flight Cycle (FC), Flight Hour (FH), Interval, Operational Check, Functional Check, 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-16 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

(continued) 

Detailed lnspection, First flight. 

· §9.B: “(FC or LDGS)” replaced by “(FC)”. 

· §9: “his local regulatory authority” replaced by “the Authority of the State of aircraft 

registry”. 

· §10: “Explanation of ALS Sub PART 3-1 Table Format” paragraph created. 

Sub-part 3-1

- ALS Part 3 Revision 00 and subsequent, use a new formatted table to list all the CMR 

tasks and their associated data. Main new features are the creation of dedicated CMR reference 

numbers, introduction of an Applicability column and listing of CMR* and CMR** in a single 

table. 

- CMR Two Star 212800-00001-1-C “OPERATIONAL CHECK OF THE GROUND 

COOLING ISOLATION VALVE TO VERIFY CLOSING IN CASE OF SMOKE WARNING” 

revised to change the applicability from “Task applicable only if cargo compartment ground 

cooling system is installed” to “A320 POST 20819” which is the Airbus Mod number for cargo 

compartment ground cooling system installation. 

- New CMR Two Star 213100-00001-1-C “FUNCTIONAL CHECK OF 

POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES” at 50000FH and 

applicable to A318 OR A319 OR A320 PRE 37734 OR A321 aircraft. 

- New CMR Two Star 213100-00001-2-C “FUNCTIONAL CHECK OF 

POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES” at 44000FH and 

applicable to A320 POST 37734 aircraft. 

- CMR Two Star 242000-00001-2-C “OPERATIONAL CHECK OF STATIC INVERTER” 

revised to escalate the interval from 500FH to 750FH in order to reflect MRB task interval 

evolution compatible with SSAs requirements. 

- CMR Two Star 262300-00001-1-C “CHECK FIRING CIRCUIT CONTINUITY” revised to 

escalate the interval from 8000FH to 12000FH as per Memo Request on SA ATA26 SSA 

following recent escalation of MRBR task ref. D26ME0909522 Issue 01, Mar 09. MRB task 

26.23.00/07 added in the related MRBR Task number column. 

- CMR Two Star 262300-00002-1-C “CHECK FIRE EXTINGUISHING LINES FOR 

LEAKAGE AND OBSTRUCTION” revised to escalate the interval from 14000FH to 18000FH in 

order to reflect MRB task interval evolution compatible with SSA requirement. 

- CMR One Star 271400-00001-2-C “OPERATIONAL CHECK OF DAMPING 

MEASUREMENT BY BITE” revised to escalate the interval from 500FH to 750FH in order to be 

consistent with new A check. 

- CMR Two Star 271400-00002-1-C “CHECK FLUID RESERVE PISTON POSITION 

WITH HYDRAULIC RESERVOIR DEPRESSURIZED” revised to escalate the interval from 

14000FH to 15000FH as per SA C/2C Evolution Exercise - Impact on ATA27A SSA - Technical 

Report ref. SA27RP1113683 Issue 01, Apr 11. 

- CMR One Star 271400-00002-2-C “CHECK FLUID RESERVE PISTON POSITION 

WITH HYDRAULIC RESERVOIR DEPRESSURIZED” revised to escalate the interval from 

5000FH to 7500FH in order to be consistent with new C check. 

- CMR One Star 273400-00001-2-C “OPERATIONAL CHECK OF DAMPING 

MEASUREMENT BY BITE” revised to escalate the interval from 500FH to 750FH in order to be 

consistent with new A check. 

- CMR Two Star 273400-00002-1-C “CHECK FLUID RESERVE PISTON POSITION 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-17 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

(continued) 

WITH HYDRAULIC RESERVOIR DEPRESSURIZED” revised to escalate the interval from 

14000FH to 15000FH as per SA C/2C Evolution Exercise - Impact on ATA27A SSA - Technical 

Report ref. SA27RP1113683 Issue 01, Apr 11. 

- CMR One Star 273400-00002-2-C “CHECK FLUID RESERVE PISTON POSITION 

WITH HYDRAULIC RESERVOIR DEPRESSURIZED” revised to escalate the interval from 

5000FH to 7500FH in order to be consistent with new C check. 

- CMR One Star 273400-00002-3-C “CHECK OF THE DIFFERENTIAL PRESSURE 

INDICATOR AND POSITION OF FLUID RESERVE PISTON OF ELEVATOR 

SERVOCONTROLS” revised to escalate the interval from 5000FH to 7500FH in order to be 

consistent with new C check. Applicability changed from “FAA Only” to “FAA Only POST 20419 

OR PRE 20419 A/C fitted without Servocontrols PNR 31075-1XX OR PRE 20419 A/C fitted 

without Servocontrols PNR 31075-3XX OR POST 21999”. 

- CMR Two Star 274000-00002-1-C “OPERATIONAL CHECK OF THS ACTUATOR WITH 

INDIVIDUAL HYDRAULIC SYSTEMS” revised to escalate the interval from 400FH to 750FH as 

per Memo SA Scheduled Maintenance Program Evolution Exercise - CMR issues relating to SSAs 

for ATA 24 and 27 ref. ME0834413 Issue 01, Jan 09. 

- CMR Two Star 275000-00001-1-C “OPERATIONAL CHECK OF WTB/POB AND 

CHECK OF FLAPS TRANSMISSION SHAFTING INTEGRITY, INCLUDING INSPECTION OF 

SEAL WITNESS DRAINS” revised to escalate the interval from 6000FH to 7500FH in order to 

reflect MRBR task interval evolution compatible with SSA requirement delete “and slats” and 

“/slats” in the Task Description added “27.50.01/04” and delete “27.80.00/04” in the Related 

MRBR Task number. 

- New CMR Two Star 278000-00001-1-C “OPERATIONAL CHECK OF WTB/POB AND 

CHECK OF SLATS TRANSMISSION SHAFTING INTEGRITY, INCLUDING INSPECTION OF 

SEAL WITNESS DRAINS” at 7500FH and applicable to All. New CMR 278000-00001-1-C added 

following the revision of the CMR 275000-00001-1-C. 

- CMR One Star 279000-00001-1-C “OPERATIONAL CHECK: 

- OF THE LOGICS ACTIVATING ELAC 1, ELAC 2 AND SEC. 1 STANDBY POWER SUPPLIES

- TO CONFIRM ABILITY OF SEC. 1 AND SEC. 2 TO ACHIEVE PITCH CONTROL 

- TO CONFIRM ABILITY OF SIDESTICK PRIORITY FUNCTION” revised to add “to confirm 

ability of sidestick priority function” in the Task Description. 

- CMR Two Star 281500-00001-1-C “OPERATIONAL CHECK OF INDIVIDUAL 

TRANSFER VALVES TO ENSURE VALVE SHAFT ROTATES VALVE TO OPEN POSITION” 

revised to escalate the interval from 6000FH to 7500FH in order to reflect MRBR task interval 

evolution compatible with SSA requirement. 

- CMR Two Star 282100-00001-1-C “OPERATIONAL CHECK TO ENSURE THAT BOTH 

CENTER TANK PUMPS FEED FOR 2 MINUTES AFTER ENGINE START” revised to change 

the applicability from “A318 OR A319 OR A320” to “A318 OR A319 OR A320 POST 20024”. 

- CMR Two Star 282800-00001-1-C “OPERATIONAL CHECK OF ACT MANUAL 

TRANSFER SYSTEM” revised to change the Related MRBR Task number from “28.28.00/05” 

to “28.28.00/13”. 

- CMR One Star 291000-00001-1-C “OPERATIONAL CHECK OF RAT MANUAL 

DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, 

FOLLOWED BY CHECK OF FILTER INDICATOR” revised to escalate the interval from 1200FH 

OR 6MO (WHICHEVER COMES FIRST) to 1500FH OR 8MO (WHICHEVER COMES FIRST) in 

order to reflect MRBR task interval evolution compatible with SSA requirements. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: NOV 23/11 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-18 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

00 

23 Nov 11 

(continued) 

- CMR One Star 291000-00001-2-C “OPERATIONAL CHECK OF RAT MANUAL 

DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, 

FOLLOWED BY CHECK OF FILTER INDICATOR AND DETAILED INSPECTION OF RAT 

BLADES FOR EVIDENCE OF PLATING CRACKS” revised to change the Related MRBR Task 

number from “29.10.00/29” to “29.10.00/29 and 29.10.00/34”. Applicability changed from “A319 

PRE 27014 OR A320 POST 27189 PRE 27014 PRE 28413 OR A321 PRE 27014” to “A319 

PRE 27014 OR A320 POST 27189 PRE 27014 PRE 28413 OR A321 PRE 27014 A/C fitted 

with PNR 762308”. 

- CMR One Star 291000-00001-3-C “OPERATIONAL CHECK OF RAT MANUAL 

DEPLOYMENT AND FUNCTIONAL CHECK OF RAT USING GROUND TEST UNIT, 

FOLLOWED BY CHECK OF FILTER INDICATOR” revised to change the Related MRBR Task 

number from “29.10.00/30” to “29.10.00/29”.- CMR One Star 291000-00003-1-C

“FUNCTIONAL CHECK TO MONITOR INTERNAL LEAK RATE OF BLUE HYDRAULIC 

SYSTEM” revised to escalate the interval from 7000FH to 7500FH as per Technical Note: 

Justification to increase the CMR-/MRBR-Task internal “Functional Check to Monitor Internal 

Leak Rate of the “Blue” Hydraulic System” in the Single Aisle Program ref. D29D11022073 

Issue 02, Jun 11. 

- New CMR One Star 324000-00001-2-C “OPERATIONAL CHECK OF ALTERNATE 

BRAKING SYSTEM” at 5600FH and applicable to A320 POST 20139 PRE 22129 PRE 26925 

POST 31931. 

- CMR One Star 324500-00002-1-C “FUNCTIONAL CHECK TO MONITOR INTERNAL 

LEAK RATE OF BRAKING SYSTEM COMPONENTS (PARK BRAKE SELECTOR VALVE, 

PRESSURE RELIEF VALVE AND ALTERNATE BRAKE SELECTOR VALVE)” revised to 

escalate the interval from 9000FH to 14800FH in accordance with SSA 

“A319/A319CJ/A320/A321 ETOPS Braking and Steering System Safety Assessment Enh. 

BSCU Enh. BSCS” ref. SCF/SYS/N/05/0909 Issue 02, Aug 07. 

- CMR Two Star 352000-00001-1-C “OPERATIONAL CHECK OF MANUAL MASK 

RELEASE” revised to changed the applicability from “PRE 33125” to “A318 OR A319 PRE

33125 OR A320 OR A321”. 

- CMR Two Star 352000-00002-1-C “FUNCTIONAL CHECK OF AUTOMATIC MASK 

RELEASE, DETAILED INSPECTION OF MASKS AND VISUAL CHECK OF CHEMICAL 

OXYGEN GENERATORS” revised to changed the applicability from “PRE 33125” to “A318 OR 

A319 PRE 33125 OR A320 OR A321”. 

- CMR Two Star 352000-00003-1-C “REMOVE FOR FUNCTIONAL CHECK OF 

PRESSURE REGULATORS” revised to escalate the interval from 6500FH to 8000FH in 

accordance with Memo New Maintenance Interval for Single Aisle ATA 35 Gaseous Oxygen 

System ref. J3520ME0414486 Issue 02, Mar 10. Applicability changed from “POST 33125” to 

“A319 POST 33125”. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 1 - SUMMARY OF CHANGES

ISSUE: JUN 15/12 ALS PART 3 SUMMARY OF CHANGES PAGE: APX1-19 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

Iss / Rev 

Date Summary of Changes (ALS Part 3 - CMR)

01 

15 Jun 12 

ALS Part 3 Revision 01 introduce the new or revised maintenance tasks resulting from A320-

200 operational life extension, i.e. 120000 FH in the frame of Extended Service Goal 1 (ESG1, 

POST MOD 39020) 

Sub-part 3-0

- Introduce the new A320-200 operational life extension, i.e. 120000 FH. 

- Replaces the Limit of Validity (LOV) terminology by Operational life. 

Sub-part 3-1

- CMR Two Star 213100-00001-1-C “FUNCTIONAL CHECK OF POSITIVE/NEGATIVE 

DELTA P PROTECTION OF SAFETY VALVES” revised to change the applicability from “A318 

OR A319 OR A320 PRE 37734 OR A321” to “A318 OR A319 OR A320 PRE 37734 PRE 39020 

OR A321”. 

- CMR Two Star 213100-00001-2-C “FUNCTIONAL CHECK OF POSITIVE/NEGATIVE 

DELTA P PROTECTION OF SAFETY VALVES” revised to change the applicability from “A320 

POST 37734” to “A320 POST 37734 PRE 39020”. 

- New CMR Two Star 213100-00001-3-C “FUNCTIONAL CHECK OF 

POSITIVE/NEGATIVE DELTA P PROTECTION OF SAFETY VALVES” applicable to “A320 

POST 39020”. 

- New CMR One Star 324000-00002-1-C “FUNCTIONAL CHECK OF THE BRAKE 

ACCUMULATOR SYSTEM” at 60000 FH and applicable to A320 PRE 26925 PRE 20139 OR 

A320 PRE 26925 POST 20139 POST 22129. This new CMR has been transferred from 

A318/A319/A320/A21 ALS part 4 revision 00, sub-part 4-3-2 - ASM task 324400-0001-1-E. 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 2 - ABBREVIATIONS

ISSUE: NOV 23/11 ALS PART 3 ABBREVIATIONS PAGE: APX2 - 1 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

ABBREVIATION MEANING 

AC Alternative Current 

ACT Additional Center Tank 

AD Airworthiness Directive 

AGCM Airborne Ground Check Module 

ALS Airworthiness Limitations Section 

AMOC Alternative Method Of Compliance 

BITE Built-In Test Equipment 

Cal. Calendar 

CMR Certification Maintenance Requirements 

CNCA Consigne de Navigabilité de Couverture Administrative 

Administrative Cover Airworthiness Directive 

D Deleted 

DSG Design Service Goal 

EASA European Aviation Safety Agency 

ELAC Elevator and Aileron Computer 

FAA Federal Aviation Administration 

FC Flight Cycles 

FH Flight Hours 

FQIC Fuel Quantity Indication Computer 

GSAC Groupement pour la Sécurité de l’Aviation Civile 

ICAO International Civil Aviation Organization 

IPC Illustrated Parts Catalog 

ISG Intermediate Service Goal 

JAR Joint Aviation Requirements 

LDG Landings 

LOV Limit Of Validity 

MO Months 

MOD Modification 

MPD Maintenance Planning Document 

MRBR Maintenance Review Board Report 

MRO Maintenance, Repair and Overhaul organisations 
A318/A319/A320/A321 AIRWORTHINESS LIMITATIONS SECTION 

ALS PART 3

CERTIFICATION MAINTENANCE REQUIREMENTS

APPENDIX 2 - ABBREVIATIONS

ISSUE: NOV 23/11 ALS PART 3 ABBREVIATIONS PAGE: APX2 - 2 

©AIRBUS SAS 2012. All rights reserved. Confidential and proprietary document. 

ABBREVIATION MEANING 

MSI Maintenance Significant Item 

N New 

POB Pressure-Off Brake 

PNR Part Number 

R Revised 

RAT Ram Air Turbine 

ROR Record Of Revisions 

SEC Spoiler and Elevator Computer 

SYS System 

THS Trimmable Horizontal Stabilizer 

TOC Table Of Contents 

WTB Wing Tip Brake (pressure-off brake) 

Ye Year