Part 135 General Maintenance Manual

Technical Content Services is now offering a General Maintenance Manual that complies with the new FAA SAS requirements.

For operators who want to add an aircraft with 10 or more passenger seats, this GMM contains all of the FAA required items and information to obtain OpSpec D072.

A Little Background First

When an operator uses aircraft with nine or less passenger seats, they are allowed to maintain and inspect the aircraft under the provisions of Part 91, with a few simple Part 135 requirements added on. This is a very simple and easy set of requirements.

Once the aircraft has 10 or more passenger seats, the FAA requires that operator to obtain OpSpec D072, which is the authorization to have a Continuous Airworthiness Maintenance Program (CAMP). (Don’t confuse this with the software vendor, also called CAMP.)

What is a CAMP? It is a formal maintenance organization including many of the requirements of a repair station. It is NOT the same thing as a Part 145 repair station certificate, however there are many similarities to the requirements of Part 145.

For the purposes of simplicity right now, let’s just say that it is more or less a requirement for your Part 135 maintenance department to operate according to rules very similar to a repair station.

General Maintenance Manual (GMM)

This General Maintenance Manual has been developed based on the complete set of FAA SAS requirements for the typical operator, including jet and transport category aircraft operations.

SAS Support: Included with this manual at no extra charge is an additional document that provides an inventory of the FAA SAS checklist items and the location of each item in this GMM. This will greatly speed the approval process and assist your FAA Inspectors with the task of ensuring compliance with SAS requirements. More on that below.

What You Are Getting

When you use Technical Content Services as the developer for your manuals, you are not ‘buying a manual’. You are getting a business relationship with a professional technical writer who is also highly experienced in Part 135 operations and has over a decade writing manuals for Part 135 operators. See the About page for more information.

GMM Contents

The GMM contains expanded procedures for the following topics.

Volume 1 Continuous Airworthiness Maintenance Program
1. Introduction
2. Maintenance Program
3. Maintenance Organization
4. Parts and Materials
5. Technical Library*
6. Equipment and Tools
7. Maintenance and Alterations
8. Maintenance Schedule and Requirements
9. Required Inspection Items (RII)*
10. Airworthiness Directives
11. Maintenance Record Keeping and Reports*
12. Contract Maintenance Providers
13. Maintenance Check Flights and Special Flight Permits
14. Personnel Training*
15. Continuing Analysis and Surveillance System*
16. Maintenance Safety Programs and Shop Practices
20. Maintenance Forms
30. Aircraft Specific Maintenance Program
31. Aircraft Specific Maintenance Program
32. Aircraft Specific Maintenance Program

Volume 2 Maintenance Program – Nine Seats or Less
1. Maintenance Program
2. Maintenance Procedures
3. Inspection and Maintenance
4. Maintenance Record Keeping and Reports

Appendix A Copies of Company Forms

*Topics noted with an asterisk are provided with a basic framework since the content will vary significantly with the operator and aircraft.


The GMM is structured in 3 major sections. The first volume is for aircraft with ten or more passenger seats. The second volume is for operator aircraft with nine or less passenger seats. The appendix contains company forms and any other miscellaneous items.

The organizational structure of this manual was designed to maximize ease of use by management and crewmembers, while also keeping FAA SAS topics closely organized. This allows your POI and PMI/PAI to rapidly review and accept this manual.

SAS – FAA Safety Assurance System

Many operators are concerned about and frustrated with the SAS DCTs (checklists). This GMM has been designed to take all of the aggravation out of the SAS review process and provide you with pre-filled checklists. See the page on SAS for more information.

Airworthiness. All SAS Airworthiness questions for jet, multi engine prop, and single engine prop aircraft with 10 or more and 9 or less passenger seats have been addressed within this GMM.

For Operator role and FAQ, read more…