OFFICIAL

AP101X-XXXX-15S

IssueXdated YYYY-MM-DD


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Security Statement

[AIRCRAFT PHOTOGRAPH]

[Title]

[AIRCRAFT PHOTOGRAPH]

[Title]

Note to Users

1Applicability

1.1This Statement of Operating Intent and Usage (SOIU) template is part of the Aircraft Document Set (ADS) and is appropriate for platforms with traditional (post-sortie) usage data gathering methods. Platforms with live (or quasi-live) data capture, such as Health Monitoring (HM) systems, may also use this template but should bear in mind that the Design Organization (DO) is more likely to already have the usage data available, rather than requiring it to be fed back at the SOIU review intervals.

1.2In such cases, the SOIU is better focussed on communicating to the DO the intended usage patterns and changes to usage patterns from those previously declared. This will enable the DO to validate the available usage data against the assumptions made on intended usage, in order to maintain the structural/system integrity of the platform.

1.3Chapter 2, para 2.1, 2.2 and 2.3 gives the rationale behind this methodology.

1.4The table below is intended to give stakeholders a quick reference guide as to which chapters of this SOIU are most applicable to them.

Stakeholders / Chapters
Duty Holder / All
Pilots / Chapter 1 and Annexes A and C
Release To Service Authority (RTSA) / All
Project Team (PT) / All
Design Organization (DO) / All
Fleet Managers / Chapters 1 and 3 and Annex C

2Amendment Procedure

2.1 Outside of the formal reviews, if any operator or holder of this document identifies a variation in usage from that described herein, they should raise a MOD Form 765X (Aircrew Publications Amendment Request) at the earliest opportunity.The latest version of the F765X can be found in Chapter 1 of MAP-02

2.2 The front cover will have the Issue number and date of issue. Each leaf carries the date of issue and the amendment state (if not the original issue) annotated on every affected page, on the line immediately below the page number. For changes or added material, a side bar will be added in the left-hand margin (outside margin for twin-column layouts) running the vertical extent of the amended material. If a chapter is issued in a completely revised form, the note ‘Completely Revised’ below the chapter title will replace the side bar.

3Cross-Reference to Military Aviation Authority Regulatory Publications

3.1Any entries in this SOIU which refer to regulation should be checked against the most current version of the Military Aviation Authority (MAA) Regulatory Publications (MRP) to ensure that the appropriate level of compliance is being addressed.

3.2MRP Regulatory Article , RA5721(2) and RA5722(2) stipulates the need for VALIDATION of the Aircraft System and Propulsion Integrity through the production of the SOI/SOIU. RA5720 (4) stipulatesthat Structural Integrity is validated through the Aircraft Usage Validation Process(AUVP) resulting in the production of the SOI/SOIU.The link will only work if you have access to Dii, if not contact who can provide a copy.

Please note,orangetext on the front cover and in the main body of the document is to be replaced with the appropriate information or removed as required.

Record of Amendments

To record the incorporation of an amendment list in this publication, sign against the appropriate AL number and insert the date of incorporation.

Amendment
No / Incorporated By / Date
Name / Signature
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

List of Effective Pages

The following is a list of each page, and its current AL state.

Page / AL State / Page / AL State
1 / 22
2 / 23
3 / 24
4 / 25
5 / 26
6 / 27
7 / 28
8 / 29
9 / 30
10 / 31
11 / 32
12 / 33
13 / 34
14 / 35
15 / 36
16 / 37
17 / 38
18 / 39
19 / 40
20 / 41
21 / 42

Table of Contents

(Right Click to update fields in the table of Contents)

Security Statement

Note to Users

1Applicability

2Amendment Procedure

3Cross-Reference to Military Aviation Authority Regulatory Publications

Record of Amendments

List of Effective Pages

Abbreviations and Acronyms

Glossary

Chapter 1 Introduction

1.1This SOIU also has the following functions:

1.2SOIU Stakeholders and Responsibilities - The following stakeholders are responsible for the use and maintenance of this publication:

1.3Structure of this SOIU

1.4Reviews

1.5Associated Publications

1.6References

Chapter 2 Role of the SOIU in the Management of Airworthiness

2.1MOD Integrity Management

2.2Aircraft Usage Validation Process (AUVP)

2.3AUVP Cycle

2.4Purpose of the AUVP (this is a function of structures assurance)

2.5AUVP Annual Review

2.6AUVP Quantitative Review

2.7AUVP Stakeholders for the Aircraft Type

2.10Health / Fatigue [delete as applicable] Monitoring System – System Description

2.12Operational Loads Measurement (OLM) or Operational Data Recording (ODR)

2.13Flying Hour Recording

2.16Unmetered Sorties

2.17Fatigue Conservation

Chapter 3 Aircraft Design and Usage

3.1Aircraft Design History and Design Philosophy

3.2Operating and Environmental Roles

3.3Description of Common Operating Procedures

3.4Description of Key Manoeuvres

3.5Fatigue Significant Events

3.6Fatigue Significant Maintenance Activities

3.7Data Process – Data Collection

3.8Usage Data – Source of Data

3.9Percentage of Flying Hours in each SPC

Chapter 4 Initial/Future Operating Intent

4.1General

4.2Timescale

Annex A – Sortie Profile Codes

Sortie Profile Codes

Extended Data Trends

Annex B – MOD Forms

Annex C – Fatigue Conservation Measures

Annex D – Design Usage Assumptions

Annex E – Long Term Trending

Annex F - Previous Issues of SOI/SOIU

Abbreviations and Acronyms

The following is a list of abbreviations that appear within this document: Amend as Required

AAR / Air-to-Air Refuelling / KFF / 1000 lb Free Fall
ACT / Air Combat Training / KIAS / Knots Indicated Air speed
ACMI / Air Combat Manoeuvring Installation / kts / Knots
ADS / Aircraft Document Set / lbs / Pounds (Mass)
ADX / Air Defence Role / LITS / Logistics Information Technology Strategy
AFD / After Flight Declaration / LOAF / Defensive Manoeuvre Terminology
AGL / Above Ground Level / LRU / Line Replacement Unit
AGM / Air to Ground Missile / M / Mach
AI / Air Interdiction / MAA / Military Aviation Authority
AL / Amendment List / MAP / Maintenance & Airworthiness Processes
ALARM / Air Launched Anti Radiation Missile / MAUM / Maximum All Up Mass
AMRAAM / Advanced Medium Range Air-to-Air Missile / max / Maximum
AoA / Angle of Attack / MDP / Maintenance Display Panel
AOA / Aircraft Operating Authority / MFRL / Multi Function Rail Launcher
AP / Aircraft Publications / min / Minimum
AUM / All Up Mass / mins / Minutes
AUVP / Aircraft Usage Validation Process / MOD / Ministry of Defence
BDA / Boom/Drogue Adaptor / MR / Multi Role
BSD / Bulk Storage Device / MRP / MAA Regulatory Publications
CBLS / Carrier Bomb Light Store / MSD / Minimum Separation Distance
CofG / Centre of Gravity / NATO / North Atlantic Treaty Organisation
CSA / Customer Supplier Agreement / NVG / Night Vision Goggles
CT / Counter Terrorism / Nz / Normal Acceleration
DA / Design Authority / OAS / Offensive Air Support
DAS / Directorate Air Systems / OAT / Outside Air Temperature
DES / Defence Equipment & Support / OCU / Operational Conversion Unit
DH / Duty Holder / ODR / Operational Data Recording
DOB / Deployed Operating Base / OLM / Operational Loads Measurement
DUS / Design Usage Spectrum / OME / Operational Mass Empty
EGR / Engine Ground Run / OSD / Out of Service Date
EPW / Enhanced Paveway / PO / Publication Organization
ESS / Engineering Support System / PGB / Precision Guided Bomb
FCS / Flight Control System / PMDS / Portable Maintenance Data Store
FH / Flying Hours / RA / Regulatory Article
FI / Fatigue Index / RAF / Royal Air Force
FMF / Fatigue Meter Formula / RAIDS / Rangeless Airborne Instrumentation Data System
FRCs / Flight Reference Cards / RI / Regulatory Instruction
FOD / Foreign Object Damage / RN / Regulatory Notice
ft / Feet / RTS / Release to Service
GARP / Generic Aircraft Release Procedure / RTSA / Release to Service Authority
GBU / Guided Bomb Unit / SAPs / Simulated Attack Profiles
GCA / Ground Controlled Approach / SHM / Structural Health Monitoring
GH / Ground Handling / SI / Structural Integrity
GSS / Ground Support System / SME / Subject Matter Expert
HAS / Hardened Aircraft Shelter / SOI / Statement of Operating Intent
IAS / Indicated Air Speed / SOIU / Statement of Operating Intent & Usage
IAT / Individual Aircraft Tracking / SPC / Sortie Profile Code
IFRP / In-flight Refuelling Probe / SSI / Structurally Significant Item
IM / Integrity Management / UK / United Kingdom
PT / Project Team / UN / United Nations
PTL / Project Team Leader / WRAM / Work Recording and Asset Management
JAP / Joint Air Publication
JSP / Joint Service Publication

Glossary

The following is a list of terms that appear within this document:

[This section is to be used to add key terms and their definitions relevant within the Statement of Operating Intent and Usage.]

[Note, a large glossary of appropriate terms is presented in MAA02 for use in this context.

Should MAA02 be used as a source, it is important to ensure that the most current version of MAA02 is used at the time of inclusion. The most recent version of MAA02 can be found online at:MAA Intranet or externally at gov.uk

Chapter 1Introduction

Purpose

The primary purpose of the Statement of Operating Intent and Usage (SOIU) is to convey formally to the Design Organisations (DO) the MOD’s recent [Aircraft Type and Mark]usage statistics and descriptions and future operating intent, to be compliant with the MRP.

1.1This SOIU also has the following functions:

  1. The SOIU is written for the purpose of Integrity Management (IM), which is essential for the preservation of airworthiness. Integrity Management applies to Structures, Systems and Propulsion.
  1. It is the sole authoritative source of descriptions of the sortie profile codes (SPCs) that will be recorded by pilots in their post-sortie feedback, (Reference A),
  2. It is a descriptive rather than a prescriptive document and should not limit the operation of the aircraft.
  3. It is a source of information for Fleet Managers.
  4. The SOIU may be used for other engineering, airworthiness or safety disciplines. However, any reader intending to use the SOIU for non-Structural, System or Propulsion Integrity Management purposes should be satisfied that the scope, detail and nature of the information presented is adequate for their purposes.
  5. The SOIU is used to convey intended future usage to the DO’s.

1.2SOIU Stakeholders and Responsibilities- The following stakeholders are responsible for the use and maintenance of this publication:

Type pilots. All pilots operating Type are to:

  1. Familiarise themselves with the SPCs described and defined in Annex A so that they are able to select the most suitable SPC for post-sortie feedback.
  1. Familiarise themselves with the fatigue conservation measures described in Annex C.
  2. Consistently give due regard to the fatigue life consumption implications of their activities.

Operational Duty Holder (ODH). The ODH is the owner of the document and is responsible for the operations-related content of the SOIU, although the Requirements Manager, or equivalent post, may support it’s drafting. The ODH is to carry out the following (Note, the ODH could task the Project Team (PT) as the technical information sponsor and manager):

  1. Ensure that there are sufficient pilots at all levels of experience with a working knowledge of all descriptions of operating procedures in Chapter 3, to be able to identify any significant omissions or differences between the declared operating intent and the operating profiles actually used. They must also be able to recognise when sorties routinely differ from the profiles described in this SOIU, and initiate amendment action to the SOIU whenever required.
  1. Conduct a formal, annual review of the SOIU, as required by MRP RA 5720(4),RA5721 and RA5722 to check the continued validity of all descriptions and data, particularly within Chapters 3, 4 and Annex A of the SOIU, consulting active pilots as necessary, and initiating amendments if required.

Project Team (PT). The PT, as technical information sponsor and manager of the SOIU, should:

  1. Authorise the SOIU for publication, following DH endorsement of the validity and accuracy of operating descriptions and data.
  2. Nominate the role of Publication Organization (PO).
  3. Ensure a full review of this document is carried out every 3 years after the aircraft enters service, or upon reaching Full Operating Capability (FOC), including production of up-to-date quantitative usage data for each SPC.
  4. Task the Designer/Design Organization with analysing the fatigue and damage tolerance implications of SOIU changes following any significant amendment or reissue of the document.

Release to Service Authority (RTSA). The RTSA should:

  1. Review each new issue or amendment of the SOIU, prior to publication, to confirm that the usage described herein does not violate RTS clearances. They are to investigate any suspected conflicts and report the findings through the PT.

Design Organization.The Design Organization should:

  1. Analyse the implications of SOIU changes upon component/airframe lives, fatigue test spectra, individual aircraft tracking, maintenance schedules and airworthiness.

The Design Organization may also specify what data could usefully be included within the SOIU and may be tasked with compiling the usage data for triennial reviews.

Fleet Manager. The Fleet Manager should:

  1. Ensure that wherever possible, individual aircraft experience as wide a range of roles as possible.
  2. Should it be necessary, through modification or location, to limit aircraft to one type of flying only, details are to be brought to the attention of the Designer/Design Organization in order that the fatigue implications can be assessed.

The appointed Structures or Systems desk officer from DSA MAA Certification Division, as Integrity SME, can provide Integrity Management policy and technical advice and guidance to assist the PT.

1.3Structure of this SOIU

  1. AP 101B-XXXX-15S is arranged in 2 parts. Part 1 consists of 4 Chapters plus annexes and is the current SOIU. Part 2, the History of Previous Content may be used by those staffs who wish to maintain a continuous record of previous content. Superseded editions of the SOIU which were issued as separate documents, together with discarded amendment pages could be assembled in date order in Part 2.(if so desired)

1.4Reviews

  1. In accordance with RA5720, RA5721 and RA5722 this SOIU is to be reviewed annually by the PT on behalf of the DH, to confirm that the SOIU remains an accurate record. A triennial review by an appointed organisation, using usage data to carry out a quantitative update. The DH in conjunction with the PT should initiate these reviews through the Integrity Working Groups (IWG) (or equivalent Local Technical Working Groups).

1.5Associated Publications

a.This Statement of Operating Intent and Usage should be read in conjunction with the following instructions/publications:

A.[Aircraft Type and Mark Release To Service]

B.[Add others as required]

1.6References

a.RA5720 Structural Integrity Management

  1. RA5721 System Integrity Management
  2. RA5722 Propulsion Integrity Management
  3. Manual of Maintenance & Airworthiness Processes MAP-02
  4. Aircraft Usage Validation Process (AUVP) Guidance Document (Latest Version available via this link or via the MAA Intranet. A copy can also be obtained by contacting MAA Certification Division)

(Amend/Add as Required)

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Chapter 2Role of the SOIU in the Management of Airworthiness

2.1MOD Integrity Management

a. The aim of Integrity Management is to counter the threats to Integrity throughout the life of the aircraft or system, across organisational, process and responsibility boundaries, ensuring risks to airworthiness are Tolerable and As Low As Reasonably Practicable (ALARP). Integrity Management requires a planned programme of measures.

b. The activities required to manage the integrity of MOD aircraft throughout its service life are detailed in MRP RA5720, RA5721 and RA5722.

2.2Aircraft Usage Validation Process (AUVP)

AUVP Overview

a.A key part of Integrity management is the validation of the assurance measures. To support this validation activity the MOD undertakes an AUVPor all aircraft marks.

b.For aircraft in service, this includes periodic reviews of the actual aircraft usage, together with an assessment of likely future changes. For aircraft not yet in service, validation activities are likely to be more limited, but can include read-across from current platforms.

c.The basic principle of the AUVP is that there are periodic reviews of aircraft usage throughout the life of the aircraft. The output of this review process is the SOIU. Chapter 3 and Annex A of the SOIU looks back at actual usage over a period of time and Chapter 4 looks forward to provide information on the intent for future aircraft use.

2.3AUVP Cycle

a.Within the AUVP there is an annual review cycle for a basic (table top) review of theSOIU, and a 3 year cycle for a full quantitative review of the information provided within Chapter 3 and Annex A of the SOIU.

2.4Purpose of the AUVP (this is a function of structures assurance)

a.During the fatigue safe life substantiation and/or determination of damage tolerance inspection regimes of any platform, the Designer/Design Organization must make assumptions on how the aircraft will be used in service. The generic term for these assumptions is the Design Usage Spectrum (DUS). As fatigue lives and fatigue damage propagation can be significantly altered by small changes in usage, such as the number or severity of manoeuvres, or increased mass, it is important that the Designer/Design Organization is advised of the actual in-service usage.

b.The purpose of the AUVP is to compare current usage against the design usage assumptions in the DUS to ensure continued airworthiness. The SOIU is a key part of this process, as it is the vehicle whereby the MOD formally provides information on intended usage and actual aircraft usage to the Designer/Design Organization. The Designer/Design Organization should then be contracted to compare the usage to the design assumptions in the DUS and subsequently provide to the MOD with a statement of acceptance or advice on the continuing integrity of the aircraft.

2.5AUVP Annual Review

a.The AUVP Annual Review is a table-top staff review of the SOIU to be carried out by the relevant operational staff, (in collaboration with the ODH). The objective of the review is to ensure the continuing relevance of the information presented and detect any significant changes since the SOIU was last updated. The Review should consider the accuracy of usage profiles and any known update on roles, operational use or deployment.

2.6AUVP Quantitative Review

a.The AUVP Quantitative Review is carried out at 3 yearly intervals. The Review is the responsibility of the ODH who can delegate the technical information sponsorship and management to the PT, the PT should co-ordinate the results of the Review. The Review is carried out with support from other stakeholders including the platform operators and the DO.