VFR transponder inspection
Testing and inspection of the aircraft’s ATC transponder under §91.413. Covered transponders generally require inspection within the preceding 24 calendar months.
Neal Aviation · Avionics Service
Avionics certification and aircraft support.
Professional transponder, altimeter, pitot-static, RVSM, software, battery, ELT, oxygen, mobile, and AOG services for general aviation aircraft.
Certified aircraft
Experimental aircraft
Piston · Turbine · Rotorcraft
Certification briefing
Know which inspection your aircraft needs.
VFR transponder checks, IFR altimeter and static-system inspections, and RVSM support serve different aircraft and operating requirements. We help identify the appropriate service for your aircraft configuration.
Certification requirements can depend on the aircraft, installed
equipment, operating rules, previous maintenance, and the intended
operation. Provide your aircraft and equipment details when
scheduling.
IFR altimeter and static-system inspection
Testing of applicable static pressure systems, altimeter instruments, and automatic pressure-altitude reporting equipment for IFR operation in controlled airspace.
RVSM aircraft support
Specialized inspection and altimetry-system support for eligible aircraft operating in Reduced Vertical Separation Minimum airspace.
24 MO
The 24-calendar-month interval
The applicable §91.411 and §91.413 tests are commonly referred to as “two-year certifications,” but the regulations use a 24-calendar-month interval. Additional testing may also be required following certain installations or maintenance.
Current service rates
Flat-rate avionics service pricing.
Review the listed certification, bench, aircraft support, travel, and AOG service rates below.
Aircraft configurations and requested work not represented below
should be reviewed by the Neal Aviation team before scheduling.
Certification services
CERT · 01- VFR (91.413) Transponder Check - $150
- IFR (91.411) Single System / Unpressurized - $500
- IFR (91.411) Dual System / Unpressurized - $850
- IFR (91.411) Rotorcraft- $750
- IFR (91.411) Pressurized - $850
- RVSM - $2,300
Aircraft and bench services
SHOP · 02- Software Updates - $250 per unit
- Battery Service - $300
- ELT Bench Inspection - $250
- O2 Service on-site at Neal Aviation - $300
Travel and AOG support
FIELD · 03- Travel Fee – (hours x labor rate) + mileage ($.70/mile)
- AOG Callout – double-time with a four (4) hour minimum + $250 dispatch fee
Need a service that is not listed? Send the aircraft type, registration, installed equipment, airport location, and requested work for review.
Request a quoteAircraft support capabilities
More than a certification appointment.
Neal Aviation supports aircraft owners and operators with scheduled avionics service, equipment updates, bench inspections, on-site aircraft support, and urgent dispatch.
01
Software updates
Update supported avionics units to the appropriate available software revision. Provide the manufacturer, model, and current software version when known.
02
Battery service
Scheduled aircraft battery service performed in accordance with the applicable battery and aircraft service information.
03
ELT bench inspection
Bench-level evaluation of eligible emergency locator transmitter equipment. Include the ELT manufacturer and model when requesting service.
04
On-site oxygen service
Aircraft oxygen service performed on-site at Neal Aviation. Aircraft type and oxygen-system details should be provided before the appointment.
Service at your aircraft’s location.
Field service may be available when the aircraft cannot reasonably be brought to a Neal Aviation location. Travel time and mileage are billed according to the listed travel-fee formula.
- Provide the airport and aircraft location.
- Describe the requested inspection or aircraft discrepancy.
- Confirm aircraft access and local contact information.
AOG dispatch when time matters.
AOG support is intended for urgent aircraft situations requiring technician dispatch. The listed AOG rate includes double-time with a four-hour minimum plus the dispatch fee.
- Aircraft registration, make, and model
- Airport, ramp, hangar, or FBO location
- Complete description of the aircraft discrepancy
Service sequence
A clear path from scheduling to return to service.
Providing complete aircraft and equipment information before the appointment helps the team identify the right service, equipment, and access requirements.
Send the aircraft details
Provide the aircraft registration, year, make, model, equipment configuration, airport location, and requested service.
Confirm the service scope
The team reviews the aircraft configuration and confirms the appropriate inspection, bench service, field visit, or AOG response.
Inspect and evaluate
Applicable equipment and aircraft systems are tested or inspected. Any discrepancies requiring additional attention are identified.
Documentation and next steps
Completed work is documented as applicable, and the aircraft owner or operator receives the relevant findings and next steps.
Information to have ready
- Aircraft registration number
- Aircraft year, make, and model
- Transponder, altimeter, encoder, or air-data equipment
- Date of the previous applicable certification
- Known static leaks, faults, or avionics discrepancies
- Aircraft location and access instructions
Tell us about recent work
Mention any recent transponder installation, altimeter replacement, encoder work, static-system maintenance, panel upgrade, software change, or other work that may affect testing and system correspondence.
Submit aircraft details
KSEE · Gillespie Field
El Cajon, California
KMYF · Montgomery-Gibbs
San Diego, California
L18 · Fallbrook
Fallbrook, California
Avionics service briefing
Certification and service questions.
Helpful information about VFR and IFR inspections, aircraft configurations, RVSM service, mobile support, and appointment preparation.
NAV 01 What is the difference between a VFR transponder check and an IFR certification?
A VFR transponder check addresses the applicable ATC
transponder testing and inspection requirements under §91.413.
An IFR inspection under §91.411 addresses the applicable static
pressure systems, altimeters, and automatic pressure-altitude
reporting equipment used for IFR operation in controlled
airspace. The exact service required depends on the aircraft
configuration and intended operation.
NAV 02 How often are §91.411 and §91.413 inspections required?
The regulations generally use a 24-calendar-month interval for
the applicable tests and inspections. Certain installations or
maintenance may require additional testing before the normal
interval expires.
NAV 03 What does “single system” or “dual system” mean?
These descriptions refer to the aircraft’s installed altimetry,
air-data, and static-system configuration. Aircraft with
multiple altimeters, air-data computers, or separate static
systems may require a different service scope than a basic
single-system aircraft. Provide an equipment list or panel
information when scheduling.
NAV 04 Why is pressurized-aircraft pricing listed separately?
Pressurized aircraft can have different static-system,
altimetry, testing, access, and documentation requirements.
Aircraft type and equipment configuration should be confirmed
before the appointment.
NAV 05 Do you perform IFR inspections on rotorcraft?
Rotorcraft IFR service is included in the listed pricing.
Provide the helicopter manufacturer, model, registration,
airport location, and installed altimetry and transponder
equipment when requesting an appointment.
NAV 06 What is RVSM service?
RVSM refers to Reduced Vertical Separation Minimum operations.
RVSM airspace generally extends from FL290 through FL410 and
requires eligible aircraft to maintain the applicable
altimetry, altitude-keeping, configuration, and ongoing
performance requirements. Provide the aircraft type and RVSM
documentation when requesting service.
NAV 07 What happens if the aircraft does not pass an inspection?
A failed test may indicate a leak, equipment error,
correspondence issue, installation problem, or another
discrepancy requiring troubleshooting or repair. Additional
work may be required before the system can be documented as
meeting the applicable requirements.
NAV 08 Can a recent avionics installation affect the inspection?
Yes. Transponder, encoder, altimeter, air-data, wiring, antenna,
static-system, and panel work may affect the testing required.
Tell the service team about recent maintenance or installations
when scheduling.
NAV 09 Is mobile service available at my airport?
Field service may be available depending on technician
availability, aircraft location, the requested work, required
equipment, and aircraft access. Travel is billed using the
listed travel-time and mileage formula.
NAV 10 How are AOG callouts billed?
AOG callouts are billed at double-time with a four-hour minimum,
plus the $250 dispatch fee. Provide the airport, aircraft
registration, aircraft type, contact information, and a complete
description of the discrepancy.
NAV 11 Do you support certified and experimental aircraft?
Neal Aviation works with both certified and experimental
aircraft. Testing, equipment, documentation, and installation
requirements can differ, so identify the aircraft category when
contacting the service team.
NAV 12 What should I include in my service request?
Include the aircraft registration, year, make, model, airport
location, requested service, installed equipment, previous
certification date when known, recent avionics work, known
discrepancies, and the best contact information for the owner
or operator.
Still need help?
Talk to an avionics service specialist.
Neal Aviation service request
Ready to schedule your aircraft?
Send the aircraft registration, type, airport location, installed equipment, requested service, and preferred timing.