As an employee of a Part 135 operator, you should know the answer to these questions.
Starting a new job with a Part 135 operator can be overwhelming, especially with the numerous regulations and documents to navigate. Here’s a guide to help you understand the key aspects of your operator and ensure you’re always in compliance.
1. Determine the Type of Operator
One of the first things you should know is whether your operator is an “On-Demand” operator or a “Commuter.” The quickest way to find this out is by checking the operator’s Op Spec A001. This document will clearly state the classification. If you’re working for an “On-Demand” operator, you’ll have more flexibility in your operations, but you’ll also need to be diligent about compliance with Part 135 regulations.
2. Understand the Operator’s Classification
It’s important to know if your operator is a commercial operator or an air carrier. This distinction affects the type of certificate they need:
- Intrastate Operators: These operators are issued an operating certificate.
- Interstate Operators: These operators are issued an air carrier certificate. If your operator conducts interstate operations, they will have an air carrier certificate.
3. Economic Authority: A Must-Have
Economic authority is a crucial requirement for operating under Part 135. It’s necessary to qualify for an operating certificate and op specs. Op Spec A001 will specify that economic authority is required at all times. Make sure your operator has the necessary documentation to maintain this authority.
4. Exemptions and Part 298
You should also know whether your operator works under the exemptions offered by Part 298:
- Commuter Operators: They do not work under Part 298 exemptions.
- Air Taxi (On-Demand) Operators: They can work under Part 298 exemptions, which can provide more operational flexibility.
5. Documenting Economic Authority
To prove economic authority, your operator should have the following documents:
- OST 4507
- OST 6410 These documents are essential for demonstrating that your operator has the necessary economic authority to operate under Part 135.

6. Single Pilot, Single PIC, Basic, or Standard Operator?
Understanding the type of operator you work for is crucial:
- Single Pilot Operator: This is specified in Op Spec A040, meaning one pilot is sufficient for your operations.
- Single PIC (Pilot in Command) Operator: This is specified in Op Spec A039, indicating that the pilot in command is responsible for the safety and operation of the flight.
- Basic Operator: Restricted to operations in the US, Canada, Mexico, and the Caribbean.
- Standard Operator: May have worldwide authorization, as specified in Op Spec B050.
7. 9 or Less, 10 or More, or Both?
The number of passenger seats in the aircraft you operate is another important factor:
- 9 or Less Operator: Operates aircraft with 9 passenger seats or fewer.
- 10 or More Operator: Operates aircraft with 10 passenger seats or more and must have a maintenance program. If your operator flies aircraft with 10 or more seats, they are a “10 or more” operator and must have a maintenance program.
8. Geographical Authorization
Knowing where your operator is authorized to operate is crucial for planning your flights. Op Spec B050 will detail the geographical areas where your operator is permitted to conduct operations. For a Basic operator, this typically includes the US, Canada, Mexico, and the Caribbean. If you’re a Standard operator, you may have worldwide authorization.
9. Dangerous Goods: To Carry or Not to Carry
Finally, you should know if your part 135 operator is authorized to carry dangerous goods:
- Will Carry: If your operator is issued Op Spec A055, they are authorized to transport hazardous materials.
- Will-Not Carry: If Op Spec A055 is absent, your operator is not authorized to carry hazardous materials. In your case, if you are a “Will-Not Carry” operator, this simplifies your operations and reduces the risk of handling hazardous materials.
Conclusion
Navigating the world of a Part 135 operator can be complex, but understanding these key aspects will help you stay compliant and operate safely and efficiently. By referring to your operator’s Op Specs and other regulatory documents, you can ensure that you are always on the right track. If you’re new to Part 135 operations, take the time to familiarize yourself with these documents and regulations. They are your roadmap to success in this dynamic and challenging field.