Comparative case study / Part 135

New certificate or add the aircraft to an existing operator?

For many early electric-aircraft entrants, partnering with a capable Part 135 certificate holder is likely to be the more practical path to initial commercial service. It avoids rebuilding every certificate-holder system from zero—but it does not reduce the aircraft addition to a single proving-test requirement.

Working conclusion

Use an established operator for initial entry when the partnership is real—not nominal.

An existing certificate holder can provide mature management, operational control, manuals, training governance, maintenance oversight, records, SMS processes, and an established FAA interface. Those are substantial advantages over developing a new certificate holder while also introducing unfamiliar aircraft, infrastructure, and operating concepts.

The best candidate is not simply a certificate that is available. It is an operator with the capacity, management commitment, appropriate scope, safety maturity, and economic incentive to absorb the new aircraft without weakening its existing operation.

Pathway comparison

This is a strategic comparison, not a prediction of a specific FAA completion date.

IssueNew Part 135 certificateExisting Part 135 operator

FAA process

A complete five-phase initial-certification project: preapplication, formal application, design assessment, performance assessment, and administrative functions.

A change project conducted with the certificate-managing office. Scope depends on the operator’s existing authorities and how different the aircraft and operation are.

Existing system

Management, manuals, training, operational control, maintenance, records, drug and alcohol compliance, SMS, and other systems must be established and accepted or approved as applicable.

Core systems already exist, but each must be revised, validated, and shown capable of controlling the new aircraft and mission.

People

Required management and operational personnel must be recruited, qualified, trained, and demonstrated as a functioning organization.

Existing leadership and infrastructure may reduce startup work, but powered-lift expertise, instructors, check pilots, maintenance capability, and new interfaces still must be established.

Proving tests

Any proving and validation requirements are part of the broader certification project.

Section 135.145 may require at least 25 hours for the aircraft described by that rule, with night, instrument-approach, and representative-airport elements when those operations are requested.

Commercial control

The new venture controls its certificate and operating model after certification.

Entry may be faster, but the incumbent certificate holder retains operational-control responsibility and must protect its existing operation, compliance record, and safety system.

Primary risk

Time, FAA resource availability, incomplete design, and attempting to mature the company and novel aircraft operation at the same time.

Assuming the amendment is merely an aircraft-list change and underestimating manuals, programs, OpSpecs, training, maintenance, infrastructure, conformity, demonstrations, and FAA evaluation.

The 25-hour issue

Proving tests are a gate—not the whole pathway.

Section 135.145 requires at least 25 hours of acceptable proving tests for specified aircraft that have not previously been proved by the certificate holder. The rule also identifies night, instrument-approach, and representative-airport elements when those operations are requested.

That requirement cannot be applied to every electric aircraft as a universal 25-hour approval formula. Applicability depends on aircraft characteristics and the requested operation. The operator may also need revised manuals and curricula, aircraft conformity and listing, maintenance and inspection arrangements, MEL or other authorization work, qualified personnel, infrastructure controls, demonstrations, and revised Operations Specifications.

Recommended entry sequence

Select the operating partner

Evaluate authority, management depth, FAA standing, SMS maturity, training and maintenance capability, geography, and willingness to own operational control.

Run a scope-gap assessment

Compare the proposed aircraft and mission with the operator’s current OpSpecs, manuals, programs, personnel, bases, maintenance system, and infrastructure.

Agree on certificate-holder responsibility

Define who controls flights, accepts risk, qualifies personnel, maintains records, manages vendors, communicates with the FAA, and stops the operation when controls are not effective.

Build the change package

Prepare controlled manual revisions, training and checking, maintenance, conformity, MEL strategy, emergency response, vertiport or airport interfaces, SMS change-management evidence, and requested OpSpecs.

Demonstrate before scaling

Complete required testing and demonstrations, verify corrective actions, establish performance measures, and limit initial routes until the system produces dependable evidence.

Decide the long-term certificate strategy

After the operation is stable, reassess whether the venture should remain with the incumbent, acquire an entity, or pursue its own certificate with a proven operating model.

Maintenance case study

Can the operator maintain the aircraft it wants to add?

The nine-or-fewer versus ten-or-more passenger-seat distinction changes the basic Part 135 maintenance pathway. Technician training, high-voltage safety, battery and software configuration, tracking, repair support, reliability, and vendor control must be resolved before the aircraft-addition strategy is credible.

Review electric-aircraft maintenance readiness ↗

Controlling starting points

Confirm the path with the certificate-managing office.

This analysis is general operational information. The actual amendment, certification, and proving requirements depend on the aircraft, operating authority, requested OpSpecs, approved programs, and FAA findings.

Evaluate a Part 135 entry path ↗