30 Years of Handling Complex Aviation Law Cases

Resolve Disputes Over Repairs and Service Quality


Aircraft maintenance legal consulting for maintenance providers and aircraft owners addressing liability, compliance and service disagreements.

William G. Harger & Associates, PLLC provides legal guidance for maintenance providers, repair stations, and aircraft owners involved in disputes over repair quality, inspection findings, unpaid invoices, or regulatory compliance questions. You may face a situation where an owner refuses to pay for work you completed, or you may be an aircraft owner questioning whether maintenance was performed correctly and whether you can hold the shop accountable for defects that appeared after the aircraft was returned to service.


Mr. Harger's experience has an A&P mechanic and aircraft owner enables him to evaluate maintenance records, apply FAA maintenance regulations, and advise on liability exposure, contract obligations, and dispute resolution options. Whether you operate a maintenance FBO or own an aircraft that was recently serviced, the guidance you receive reflects an understanding of how maintenance work is actually performed and documented, not just what the regulations require on paper.


If you are involved in a dispute over aircraft maintenance or need guidance on compliance and liability issues, contact the firm to review the records and discuss your options.

How Maintenance Disputes Are Analyzed

When you retain William G. Harger & Associates, PLLC, the attorney reviews the work order, logbook entries, parts invoices, inspection checklists, and any correspondence between the parties to determine what was agreed, what was performed, and whether the work meets regulatory and contractual standards. You receive an assessment of your legal position and advice regarding the best way to resolve the dispute.


After consulting, you will understand whether the maintenance provider followed FAA-approved data, whether the logbook entries support airworthiness, and whether the charges are consistent with the work order and industry standards. If you are the provider, you gain clarity on your lien rights, your exposure for alleged defects, and how to document future work to reduce risk.


The firm does not perform inspections or provide expert witness services, but can refer you to qualified inspectors or experts if the dispute escalates. The focus remains on interpreting the maintenance records, advising on regulatory compliance, and helping you make informed decisions about how to proceed. Litigation is a last resort and is only recommended if all other efforts to resolve the dispute fail.

Guidance on Maintenance and Liability Questions

These questions address the most common concerns that arise when maintenance providers and aircraft owners face disagreements or compliance uncertainties.

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What makes a logbook entry legally sufficient?

The entry must include the date, description of work performed, reference to FAA-approved data if required, the signature and certificate number of the person performing or supervising the work, and a return-to-service statement if applicable.

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How do you determine if maintenance was performed correctly?

Evaluation depends on comparing the work to the manufacturer's maintenance manual, applicable airworthiness directives, FAA regulations and advisory circulars, and the standard of care in the industry, all of which require both regulatory and practical knowledge.

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When is a maintenance provider liable for defects?

Liability can arise if the provider deviated from approved procedures, used incorrect parts, failed to perform work described in the invoice, or made a logbook entry certifying airworthiness when the aircraft did not meet required standards.

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Why does former mechanic experience matter in these disputes?

Understanding how work is actually performed in the shop, how parts are sourced, and how logbooks are completed allows the firm to identify issues that purely legal review might miss.

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What happens if an aircraft owner refuses to pay for completed maintenance?

The provider may exercise a mechanics lien, file an aircraft lien with the FAA or pursue a breach of contract claim. Each of these options involve deadlines and have procedural requirements that should be considered before action is taken.

If you need legal guidance on an aircraft maintenance dispute, regulatory compliance question, or liability concern, reach out to William G. Harger & Associates, PLLC to review the maintenance records and discuss the best path forward.

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