Need a altimeter or transponder cert, no problem immediate scheduling for certifications available.
Heinen Avionics LLC
A Highly Experienced Certified Avionics Repair Station You Can Trust. FAR 91.411 and 91.413 Altimeter and Transponder Certifications, Avionics Installs, Avionics and Instrument Bench Repairs.
Working removed avionics for sale
Are you thinking about ADS-B. Lets talk about it. There are more and more options becoming available.
The used avionics market has many options for aircraft owners. Let me know your interests and I will tell you what is available.