Hey Randy! For IFR system checks (altimeter, transponder, vacuum, etc.) in the Dallas area, here are a few solid options:
Advantage Aviation (Mesquite, TX): Located right at Mesquite Metro Airport (KHQZ). They’re a full-service shop and should be able to handle your IFR system checks.
Texas Jet Center (Addison, KADS): A well-known shop in the Dallas area with a great reputation for avionics and inspections
DFW Airmotive (Fort Worth, KFTW): Another reputable shop that specializes in avionics and IFR certifications
Southwest Aero Services (McKinney, KTKI): A bit further north but highly recommended for avionics and system checks
Lancair International (Addison, KADS): Known for their expertise in avionics and IFR certifications
Since you’re based at Mesquite, I’d start with Advantage Aviation for convenience. If they’re booked or can’t help, the others are great backups. Always call ahead to confirm they can handle your specific needs and to check availability.