A full engine health-check
Our engine performance assessment service goes far beyond a simple records review to help clients make informed engine purchases. Employing advanced health monitoring techniques, we analyse power assurance test data, test cell outputs, and on-wing trend monitoring results to form a foundation for operational and investment decisions. This includes critical engine health trend analysis for key parameters such as EGT margin, oil consumption, and engine power assurance assessment. Our assessments ensure that clients across the UK and Ireland have an authoritative understanding of engine performance, future reliability, and projected remaining service life. Full performance reports are always provided, offering transparent, actionable intelligence about your engine's health and ensuring confidence and peace of mind at every step.



Health-check: What this includes
Performance data
We conduct thorough analyses of engine shop test cell reports, on wing power assurance data and flight records to build an accurate profile of engine condition, durability and expected service duration.
Engine Health Trend Analysis
We examine operational data, employing detailed methodologies to spot emerging patterns, identify possible degradation or anomalies, and support robust recommendations for future maintenance.
Full Documentation Review
Our professionals scrutinise all available maintenance records, repair histories and parts replacement logs to verify compliance with industry standards and regulatory obligations.
Contractual Compliance Checks
We cross-verify all inspection findings with lease agreements or sales contracts to ensure engine status is precisely aligned with all contractual commitments.
Preservation checks
Inadequate storage conditions could be costly. We identify risks and solutions to mitigate compromised preservation.
Final Performance Assessment Reports
We deliver comprehensive reports, ensuring you have a clear, evidence-based understanding of engine health, viability, and remaining useful life.
Our Aviation Professionals Witness and Oversee:
With Fierbois Engine Services, every aviation engine performance assessment is delivered under the highest standards of supervisory rigor and technical oversight. Our experienced team participates at each inspection stage, actively verifying asset status against contractual requirements and regulatory demands. We pay particular attention to engine health trend analysis, service history, and the integrity of documentation, all in line with EASA and FAA regulations.
Through our detailed review process, we aim to preserve asset value, ensure airworthiness, and safeguard our clients' operational interests. Our clients benefit from independent, accurate assessments that support informed decisions, whether they relate to lease return, purchase or ongoing aircraft engine support.

Frequently Asked Questions
What is included in your aviation engine performance assessment service?
Our aviation engine performance assessment includes health trend analysis, test data review, physical inspection witnessing, documentation validation, and full compliance checks for UK and Ireland clients.
How does Fierbois Engine Services ensure engine airworthiness?
We conduct rigorous airworthiness assessments, reviewing engine health data, test results, and maintenance history to confirm compliance with regulatory standards.
What engine types do you specialise in for performance assessment?
We specialise in assessing V2500-A5, CFM56 series, PW4000, Trent 700, Trent 800, and GE90 engines across the UK and Ireland.
Do you provide detailed reports after an engine performance assessment?
Yes, full reports detailing the engine’s health, compliance, and expected service life are provided after every assessment.
Can you assist with engine lease return inspections?
Absolutely. We oversee lease return inspections, ensuring engines are accurately assessed and their condition matches contractual obligations.

Contact Us
Book specialist engine services here
If you require specialist aircraft engine support, technical assessments, or engine inspection services you can rely on, Fierbois Engine Services is ready to step in as your expert partner.