Avionics Repair & Troubleshooting in Upland, CA

Find the Problem. Determine the Right Repair.


Avionics problems are not always obvious. Keltic Aviation provides avionics repair and troubleshooting from our shop in Upland, California, backed by 30 years of hands-on aviation experience.


When navigation, communication, or related flight systems are not operating as expected, we take a methodical approach to identifying the source of the issue before moving forward with the appropriate repair.

We Do It Right. No Shortcuts.

Avionics Troubleshooting & Repair Services


Effective avionics repair starts with understanding the problem. Troubleshooting helps narrow down the issue and determine what requires attention before moving forward with a repair.

Avionics Troubleshooting

When the cause of an avionics issue is unclear, we work through the problem methodically to identify its source and determine the next step.

Avionics Repair

Once the issue has been identified, we can determine the appropriate repair based on the equipment and problem involved.

Navigation & Communication Systems

Problems involving navigation, communication, and related flight systems may require focused avionics troubleshooting. We evaluate system concerns to identify what requires attention.


Explore Navigation, Communication & Flight Systems 

Existing Avionics Equipment

An avionics problem does not automatically mean an upgrade is required. Troubleshooting existing equipment can help determine whether repair is the appropriate path forward.


Considering new or upgraded equipment? Explore our Avionics Installation & Upgrades services.

Aircraft Maintenance & Repair


Avionics Repair & Troubleshooting


Avionics Installation & Upgrades


Aircraft Inspections & Preventive Maintenance


Navigation, Communication & Flight Systems


Our primary services include:

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When Your Avionics May Need Troubleshooting

Contact Keltic Aviation when:

Not sure which system is causing the problem? Tell us what you are experiencing, and we can start by troubleshooting the concern.

Related Aircraft & Avionics Services


Some aircraft concerns involve more than avionics equipment. Keltic Aviation also provides aircraft maintenance and related avionics services, giving our team a broader perspective when troubleshooting aircraft problems.

Why Choose Keltic Aviation?

Avionics Repair in Upland, CA


Keltic Aviation provides avionics troubleshooting and repair at 1749 W 13th St, Hangar 9A, Upland, CA 91786.

Have an avionics problem that needs troubleshooting? Contact our team and tell us what you are experiencing.

Frequently Asked Questions

  • What types of avionics systems can Keltic Aviation troubleshoot?

    Our services include troubleshooting involving avionics, navigation, communication, and related flight systems. Contact us about the specific equipment or problem you are experiencing.

  • Can Keltic Aviation repair existing avionics equipment?

    We provide avionics troubleshooting and repair services. The appropriate course of action depends on the equipment and the issue identified during troubleshooting.

  • Can Keltic Aviation help if I don't know what is causing the avionics problem?

    Yes. That is one of the main purposes of troubleshooting. Tell us what you are experiencing, and we can work to identify the source of the issue.

  • Does Keltic Aviation install and upgrade avionics?

    Yes. In addition to troubleshooting and repair, we provide Avionics Installation & Upgrades for aircraft owners considering new or upgraded equipment.

Schedule Avionics Repair & Troubleshooting

Having trouble with your aircraft’s avionics? Put 30 years of hands-on aviation experience to work identifying the problem and determining the appropriate next step.

We Do It Right. No Shortcuts.