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Process Flow Diagram (BPMN)

MR-13 BPMN diagram
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L4 Process Steps

StepStep NameRole / Swim LaneSystem InputOutputKPIDec?Exc?
Phase 1
1.1
Compile CAMO annual audit programme Quality Assurance Manager (CAMO) AMOS by Swiss AviationSoftware Regulatory calendar (EASA Part-CAMO / FAR Part 145), contracted MRO provider list, prior audit cycle dates Approved annual audit schedule with provider assignments and due dates 100% of Part-145 approved providers audited within 24-month cycle; schedule published ≥60 days before Q1 N N
1.2 Risk-score providers using performance data Quality Assurance Analyst Tableau / Power BI Historical finding rates, open CAR age, repeat finding history, on-time delivery metrics from AMOS Provider risk ranking matrix (High / Medium / Low) with scoring rationale Risk model refresh completed ≤5 business days after each completed audit; High-risk providers flagged within 48 hours N N
1.3 Determine if expedited audit is required Accountable Manager (CAMO) AMOS by Swiss AviationSoftware Provider risk score, occurrence reports filed against provider, regulatory authority safety bulletins Audit priority decision: standard schedule maintained or expedited audit triggered Expedited audit commenced within 10 business days of trigger event; 0 High-risk providers left unaudited >6 months Y Y
Phase 2
2.1
Retrieve prior audit findings and open CARs Quality Assurance Analyst AMOS by Swiss AviationSoftware Provider ID, audit history reference, open Corrective Action Request (CAR) log Prior finding summary report with CAR status (open / overdue / closed) CAR retrieval completed within 1 business day; zero open Level 1 CARs permitted before new audit commences N N
2.2 Generate compliance checklist from Part-145 requirements Lead Auditor AMOS by Swiss AviationSoftware EASA Part-145 / FAR 145 regulatory requirements, airline-specific MOE (Maintenance Organisation Exposition), prior non-conformances Structured audit checklist with regulatory reference codes and prior finding flags Checklist covers 100% of applicable regulatory subparts; prior repeat-finding items tagged for enhanced scrutiny N N
2.3 Issue formal pre-audit notification to provider Quality Assurance Manager (CAMO) AMOS by Swiss AviationSoftware Approved audit schedule, checklist scope, lead auditor assignment Pre-audit notification letter with scope, dates, document request list transmitted to Part-145 provider Notification issued ≥14 calendar days before audit start; document request acknowledgement received within 5 business days N N
2.4 Confirm provider readiness and document receipt Lead Auditor AMOS by Swiss AviationSoftware Pre-audit document submission from provider (MOE, personnel licences, equipment calibration records, training records) Readiness confirmation or audit postponement decision 100% of requested documents received and reviewed before audit day 1; postponement rate <10% of scheduled audits Y Y
Phase 3
3.1
Conduct opening meeting and confirm audit scope Lead Auditor AMOS by Swiss AviationSoftware Audit checklist, attendee list (provider Accountable Manager, QA lead, production planning), pre-audit findings Signed scope-confirmation record; audit log opened in AMOS Opening meeting completed within 1 hour; scope agreed and documented before hangar/records access begins N N
3.2 Audit technical records for airworthiness compliance Lead Auditor CAMP by CAMP Systems International Aircraft technical logbooks, Airworthiness Directive (AD) compliance records, component removal/installation logs, deferred defect register Records audit worksheet with compliance status per AD/SB and identified discrepancies AD compliance rate ≥99.5% across sampled aircraft tail numbers; zero unaddressed mandatory ADs permitted N Y
3.3 Inspect maintenance facilities, tooling, and personnel Lead Auditor AMOS by Swiss AviationSoftware Tooling calibration register, Part-66 licence currency list, hangar environment records (FOD control logs, lighting/temperature) Facilities inspection record with pass/fail status per checklist item Tooling calibration current for ≥99% of items sampled; zero expired Part-66 licences on active maintenance staff N Y
3.4 Classify findings and identify Level 1 safety issues Lead Auditor AMOS by Swiss AviationSoftware Completed audit checklist, records worksheet, facilities inspection record Preliminary finding classification (Level 1 / Level 2 / Level 3) entered in AMOS All findings classified within 4 hours of audit completion; Level 1 findings notified to Accountable Manager within 2 hours of identification Y Y
3.5 Issue stop-work notice or immediate CAR for Level 1 Accountable Manager (CAMO) AMOS by Swiss AviationSoftware Level 1 finding record, regulatory authority contact details, affected aircraft tail numbers Formal stop-work notice or immediate CAR issued; regulatory authority notified within 24 hours per EASA Part-CAMO M.B.902 Regulatory authority notification within 24 hours of Level 1 finding; stop-work enforced within 2 hours on affected task N Y
Phase 4
4.1
Finalise audit report and issue CARs to provider Lead Auditor AMOS by Swiss AviationSoftware Classified finding list, provider Accountable Manager details, regulatory references per finding Signed audit report and numbered CARs issued to provider within 5 business days of audit close Audit report issued within 5 business days; CAR numbering 100% traceable to audit report section N N
4.2 Review and accept or reject provider CAP response Quality Assurance Manager (CAMO) AMOS by Swiss AviationSoftware Provider Corrective Action Plan (CAP) with root-cause analysis, containment action, corrective action, preventive action, and target completion dates CAP acceptance or rejection with specific deficiency comments returned to provider CAP response received from provider within 10 business days (Level 1) / 30 days (Level 2); first-submission acceptance rate ≥75% Y N
4.3 Track CAP implementation and verify closure evidence Quality Assurance Analyst AMOS by Swiss AviationSoftware Accepted CAP with milestone dates, provider evidence submissions (revised procedures, training records, calibration certificates) CAR closure record with verified evidence reference; overdue CARs escalated to Accountable Manager CAR on-time closure rate ≥90%; zero Level 1 CARs open beyond 30 days; Level 2 CARs closed within 90 days N Y
Phase 5
5.1
Monitor fleet-wide AD and SB compliance status Continuing Airworthiness Engineer CAMP by CAMP Systems International FAA/EASA AD feeds, Boeing Service Bulletin library, current aircraft maintenance status from AMOS AD/SB compliance dashboard with next-due dates and overdue alerts by tail number AD compliance rate ≥99.9% at fleet level; zero aircraft operated with overdue mandatory ADs; SB incorporation decisions documented within 30 days of issue N Y
5.2 Analyse reliability programme outputs for adverse trends Reliability Engineer Tableau / Power BI PIREP/MAREP data from AMOS, component removal rates, in-flight shutdown rates, delay/cancellation codes, industry benchmark data (IATA MCTM) Monthly reliability report with control chart trend analysis and alert flag list Reliability report published by 5th working day of each month; alert threshold breach investigated within 10 business days; IFSD rate ≤0.02 per 1,000 engine hours Y N
5.3 Submit mandatory occurrence reports to regulator Safety Officer (CAMO) ECCAIRS 2 (European Coordination Centre for Accident and Incident Reporting Systems) Occurrence reports from maintenance crews, AMOS defect records, CAMO safety investigation findings Mandatory occurrence report (MOR) submitted to EASA / national CAA within 72 hours per Regulation (EU) 376/2014; ASRS report filed for US operations 100% of reportable occurrences submitted within 72-hour regulatory deadline; MOR rejection rate <2%; follow-up investigation reports submitted within 30 days N Y
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Process Attributes

Identification

Process IDMR-13
L1 DomainMaintenance, Repair & Overhaul
L2 ProcessAirworthiness & Compliance
L3 NameQuality Assurance & Safety Audits (CAMO)
L4 Steps18 across 5 phases
Decision Gates5 (all with iteration loops)
Exceptions9 documented

Swim Lanes (Roles)

Quality Assurance Manager (CAMO)
Quality Assurance Analyst
Accountable Manager (CAMO)
Lead Auditor
Continuing Airworthiness Engineer
Reliability Engineer
Safety Officer (CAMO)

Systems & Tools

AMOS by Swiss AviationSoftwareTableau / Power BICAMP by CAMP Systems InternationalECCAIRS 2 (European Coordination Centre for Accident and Incident Reporting Systems)

Key Performance Indicators

Compile CAMO annual audit programme100% of Part-145 approved providers audited within 24-month cycle; schedule published ≥60 days before Q1
Risk-score providers using performance dataRisk model refresh completed ≤5 business days after each completed audit; High-risk providers flagged within 48 hours
Determine if expedited audit is requiredExpedited audit commenced within 10 business days of trigger event; 0 High-risk providers left unaudited >6 months
Retrieve prior audit findings and open CARsCAR retrieval completed within 1 business day; zero open Level 1 CARs permitted before new audit commences
Generate compliance checklist from Part-145 requirementsChecklist covers 100% of applicable regulatory subparts; prior repeat-finding items tagged for enhanced scrutiny
Issue formal pre-audit notification to providerNotification issued ≥14 calendar days before audit start; document request acknowledgement received within 5 business days
Confirm provider readiness and document receipt100% of requested documents received and reviewed before audit day 1; postponement rate <10% of scheduled audits
Conduct opening meeting and confirm audit scopeOpening meeting completed within 1 hour; scope agreed and documented before hangar/records access begins

Airline-Specific Risks & Pain Points

MRO provider network spans 15+ stations; manual calendar alignment in spreadsheets leads to audit gaps when contracts are added mid-year without AMOS notification trigger
Reliability data is siloed across AMOS and airline OTP systems; manual data extraction introduces 1–2 week lag that distorts risk scores
EASA/FAA safety bulletins arrive via email with no automated AMOS integration; manual triage by QA Manager creates response-time variability
Legacy AMOS implementations store CAR evidence as unstructured PDF attachments; keyword search across >500 CARs per provider is unreliable without structured data entry discipline
EASA AMC amendments (e.g. 2022 Part-CAMO revision) require manual checklist updates; no automated regulatory change management feed into AMOS checklist library
Some third-party MRO stations (particularly overseas line stations) acknowledge notifications informally via WhatsApp rather than through AMOS supplier portal, creating audit-trail gaps

Inputs / Outputs

Primary InputRegulatory calendar (EASA Part-CAMO / FAR Part 145), contracted MRO provider list, prior audit cycle dates
Primary OutputMandatory occurrence report (MOR) submitted to EASA / national CAA within 72 hours per Regulation (EU) 376/2014; ASRS report filed for US operations
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