What is the primary objective of ISO 14064?

ISO 14064 provides requirements and guidance for quantifying, reporting, and verifying greenhouse gas (GHG) emissions and removals. The standard family—ISO 14064-1:2018 for organizational inventories, ISO 14064-2:2019 for project-level reductions/removals, and ISO 14064-3:2019 for validation/verification—ensures inventories adhere to five principles: relevance, completeness, consistency, transparency, and accuracy. It enables credible GHG statements for regulatory reporting, investor disclosure, and carbon markets by defining boundaries, data quality, uncertainty management, and assurance processes.

Who is legally or professionally required to comply with ISO 14064?

No organization is universally legally required to comply with ISO 14064, as it is a voluntary international standard. Professionally, it applies to organizations (companies, governments, NGOs), project developers (e.g., renewable energy, CCS), and verifiers needing credible GHG inventories. It is widely adopted for regulatory readiness (e.g., emissions trading), investor demands, supply-chain reporting, and climate finance, where stakeholders require ISO 14064-3 assured statements.

Does ISO 14064 require an external audit or third-party certification?

No, ISO 14064 does not require external audit or third-party certification. Parts 1 and 2 provide specifications for self-managed inventories and project accounting, with verification under ISO 14064-3 optional but recommended for credibility. In practice, independent validation/verification by ISO 14065-competent bodies is often necessary for markets, regulators, or programs demanding assured GHG statements at limited or reasonable assurance levels.

How often should an assessment for ISO 14064 be performed?

ISO 14064 assessments should be performed annually to maintain consistency and enable trend analysis. Organizational inventories under ISO 14064-1 cover a defined reporting period (typically calendar year), with base-year recalculations for significant structural changes (e.g., acquisitions). Project monitoring under ISO 14064-2 follows defined plans, and verification under ISO 14064-3 aligns with reporting cycles or stakeholder needs.

What are the consequences of non-compliance with ISO 14064?

Non-compliance with ISO 14064 carries no direct penalties, as it is voluntary. However, it risks invalidated GHG claims, rejected disclosures in carbon markets or green finance, regulatory scrutiny under jurisdiction-specific rules, reputational damage from greenwashing accusations, and lost opportunities in procurement or investor relations lacking ISO 14064-3 assurance.

Can ISO 14064 be mapped to other international frameworks?

Yes, ISO 14064 aligns closely with the GHG Protocol Corporate Standard, sharing identical principles of relevance, completeness, consistency, transparency, and accuracy. Its modular structure supports mapping for organizational inventories (Part 1), project baselines/additionality (Part 2), and risk-based assurance (Part 3), facilitating interoperability without cross-referencing other standards.

What is the first step to begin implementing ISO 14064?

The first step is defining organizational and operational boundaries per ISO 14064-1. Select consolidation approach (equity share or control), identify emission sources/sinks across direct and indirect categories, establish base year and recalculation policy, and document relevance to ensure inventories reflect economic reality and support intended uses like reporting or verification.

What is the primary objective of AS9110C?

AS9110C's primary objective is to establish a quality management system (QMS) for aviation maintenance, repair, and overhaul (MRO) organizations to ensure consistent conformity to customer and regulatory requirements while enhancing safety and continual improvement. It builds on ISO 9001:2015 using the High Level Structure (HLS), embedding aerospace-specific controls for configuration management, counterfeit parts prevention, human factors, and risk-based thinking (RBT) across Clauses 4–10 to support continuing airworthiness.

Who is legally or professionally required to comply with AS9110C?

AS9110C applies to MRO organizations, repair stations, and continuing airworthiness providers performing maintenance on commercial, private, and military aircraft. It targets independent repair stations, airline maintenance departments, component overhaul facilities, and OEM MRO divisions, especially where certification is mandated by customers, OEMs, regulators (e.g., FAA/EASA Part-145), or for IAQG OASIS listing.

Does AS9110C require an external audit or third-party certification?

Yes, AS9110C requires third-party certification through accredited registrars via a two-stage external audit process. Stage 1 reviews documentation and readiness; Stage 2 verifies effective implementation. The QMS must be operational for at least three months, with internal audits and management review completed prior.

How often should an assessment for AS9110C be performed?

AS9110C assessments include annual surveillance audits post-certification and full recertification every three years. Internal audits must be planned based on process risk, with higher frequency for critical maintenance processes like configuration control and release-to-service.

What are the consequences of non-compliance with AS9110C?

Non-compliance with AS9110C risks regulatory sanctions, loss of repair station approvals (e.g., FAA/EASA Part-145), contract termination, and safety incidents leading to fines or shutdowns. It can result in market exclusion from OEMs/airlines, litigation, and reputational damage due to inadequate traceability or counterfeit controls.

Can AS9110C be mapped to other international frameworks?

AS9110C cannot be mapped to other international frameworks within its standalone requirements. It fully incorporates ISO 9001:2015's HLS but adds MRO-specific controls like product safety and counterfeit prevention, requiring organizations to justify any non-applicability without affecting conformity.

What is the first step to begin implementing AS9110C?

The first step for AS9110C implementation is a formal gap analysis mapping existing processes to Clauses 4–10, including regulatory alignments (e.g., EASA/FAA Part-145). Secure executive sponsorship, define QMS scope, and produce a prioritized gap register using IAQG tools before phased planning.

Standards Comparison

ISO 14064 vs AS9110C

ISO 14064

Voluntary

2018

International standard for GHG quantification, reporting, verification

AS9110C

Mandatory

2016

International standard for aircraft MRO quality management systems.

Quick Verdict

ISO 14064 provides GHG accounting standards for all organizations seeking credible emissions reporting, while AS9110C delivers quality management for aerospace MRO firms ensuring airworthiness and safety. Companies adopt ISO 14064 for climate compliance; AS9110C for contracts and certification.

Greenhouse Gas Accounting

ISO 14064

ISO 14064 Greenhouse gases specification and guidance

Cost

€€€

Complexity

High

Implementation Time

6-12 months

Key Features

Modular three-part structure for inventories, projects, assurance
Five core principles: relevance, completeness, consistency, transparency, accuracy
Defines direct and indirect emission boundaries and quantification
Risk-based validation/verification with reasonable/limited assurance
Aligns with GHG Protocol for regulatory compliance readiness

Quality Management

AS9110C

AS9110C: Quality Management Systems for Aviation Maintenance Organizations

Cost

€€€€

Complexity

High

Implementation Time

6-12 months

Key Features

Configuration management and traceability controls
Counterfeit/suspect parts prevention processes
Risk-based thinking in planning and operations
Human factors and ethical behavior requirements
Maintenance release and airworthiness controls

Detailed Analysis

A comprehensive look at the specific requirements, scope, and impact of each standard.

ISO 14064 Details

What It Is

ISO 14064 is an international standard family (Parts 1-3:2018-2019) for greenhouse gas (GHG) quantification, reporting, and assurance. It provides a modular framework for organizations to develop credible GHG inventories (Part 1), project reductions/removals (Part 2), and independent validation/verification (Part 3). The principle-based approach emphasizes relevance, completeness, consistency, transparency, and accuracy, aligning with GHG Protocol.

Key Components

Three interdependent parts: Organizational inventories, project accounting, assurance processes.
Core principles: Five unifying GHG accounting principles.
Direct and indirect emissions categorization and boundary setting (equity/operational control).
Verification model: Risk-based with limited/reasonable assurance levels per ISO 14064-3.

Why Organizations Use It

Drives regulatory compliance (e.g., CSRD, SB-253), investor trust, and decarbonization strategy. Mitigates greenwashing risks, enables carbon markets, and reveals efficiency opportunities. Boosts stakeholder confidence via third-party assurance.

Implementation Overview

Phased approach: governance, boundary design, data systems, reporting, verification. Suits all sizes/industries; integrates with ISO 14001. Requires 6-12 months, cross-functional teams, software/tools; optional but recommended external audits.

AS9110C Details

What It Is

AS9110C (AS9110:2016 Rev C) is an international quality management system (QMS) standard for aviation maintenance, repair, and overhaul (MRO) organizations. It builds on ISO 9001:2015 using the High Level Structure (HLS), embedding risk-based thinking (RBT), PDCA cycles, and aerospace-specific controls for safety-critical maintenance processes.

Key Components

Core clauses (4-10): context, leadership, planning, support, operation, evaluation, improvement.
Aerospace additions: configuration management, counterfeit parts prevention, human factors, traceability, release-to-service controls.
Built on ISO 9001 with ~40 supplemental requirements; voluntary certification via accredited bodies like IAQG OASIS.

Why Organizations Use It

Meets customer/OEM contracts and regulatory alignments (FAA/EASA Part-145).
Mitigates safety risks, reduces rework/AOG events, ensures supply-chain readiness.
Drives efficiency (5-12% labor cost reduction), market access, insurance savings, stakeholder trust.

Implementation Overview

Phased approach: gap analysis, process mapping, training, pilots, audits. Suited for MROs of all sizes globally; requires 3+ months operational data pre-certification, internal audits, management reviews. Total 6-12 months typical.

Key Differences

Aspect	ISO 14064	AS9110C
Scope	GHG emissions quantification, reporting, verification	Aerospace MRO quality management, maintenance controls
Industry	All organizations worldwide, any sector	Aerospace maintenance, repair, overhaul organizations
Nature	Voluntary international standard family	Voluntary certification QMS standard
Testing	Third-party validation/verification optional	Internal audits, management reviews, certification audits
Penalties	Loss of credibility, no legal penalties	Loss of certification, market exclusion

Scope

ISO 14064

GHG emissions quantification, reporting, verification

AS9110C

Aerospace MRO quality management, maintenance controls

Industry

ISO 14064

All organizations worldwide, any sector

AS9110C

Aerospace maintenance, repair, overhaul organizations

Nature

ISO 14064

Voluntary international standard family

AS9110C

Voluntary certification QMS standard

Testing

ISO 14064

Third-party validation/verification optional

AS9110C

Internal audits, management reviews, certification audits

Penalties

ISO 14064

Loss of credibility, no legal penalties

AS9110C

Loss of certification, market exclusion

Frequently Asked Questions

Common questions about ISO 14064 and AS9110C

ISO 14064 FAQ

AS9110C FAQ

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What It Is

Key Components

Three interdependent parts: Organizational inventories, project accounting, assurance processes.

Core principles: Five unifying GHG accounting principles.

Direct and indirect emissions categorization and boundary setting (equity/operational control).

Verification model: Risk-based with limited/reasonable assurance levels per ISO 14064-3.

What It Is

Key Components

Core clauses (4-10): context, leadership, planning, support, operation, evaluation, improvement.

Aerospace additions: configuration management, counterfeit parts prevention, human factors, traceability, release-to-service controls.

Built on ISO 9001 with ~40 supplemental requirements; voluntary certification via accredited bodies like IAQG OASIS.

Aspect

ISO 14064

AS9110C

Scope

GHG emissions quantification, reporting, verification

Aerospace MRO quality management, maintenance controls

Industry

All organizations worldwide, any sector

Aerospace maintenance, repair, overhaul organizations

Nature

Voluntary international standard family

Voluntary certification QMS standard

Testing

Third-party validation/verification optional

Internal audits, management reviews, certification audits

Penalties

Loss of credibility, no legal penalties

Loss of certification, market exclusion