If you are a quality manager, training director or accountable manager at an EASA Part-147 maintenance training organisation (MTO), choosing a training platform is one of the more consequential decisions you will make. The right system removes hours of manual administration and closes compliance gaps. The wrong one adds a tool without solving the underlying problem.
Three names often appear on the same shortlist: AMTOS (by Aggregator Solutions), Aviatize and TrainingManager365 (by Comply365). They are not three versions of the same product. Each was built for a different kind of training organisation, and that difference matters more than any single feature.
Full disclosure: this article is published by Aggregator Solutions, the company behind AMTOS. AMTOS capabilities are taken from our own product documentation (user manual version 2.5, September 2026). Aviatize and TrainingManager365 capabilities are taken only from those vendors' public websites, linked in the sources at the end. Where a vendor does not publicly describe a capability, we say so rather than assume it is missing. Please verify everything in a demonstration with each vendor.
The three platforms at a glance
AMTOS: built for Part-147 maintenance training
AMTOS (Aviation Maintenance Training & Operations System) is a cloud platform built specifically for EASA Part-147 organisations. It covers the student lifecycle from registration and enrolment through scheduling, attendance, Part-66 examinations and practical assessment to the Certificate of Recognition checklist and EASA Form 148, with a built-in quality management system. Each school runs in its own isolated database. AMTOS is a newer entrant, developed through 2026, and focuses on Part-147 only.
Aviatize: an operating system for flight schools
Aviatize describes itself as an operating system for flight schools, ATOs and flying clubs, covering scheduling, training, billing, maintenance and compliance in one platform. The company is headquartered in Mesa, Arizona, with roots in European aviation, and serves flight schools and aero clubs in more than 47 countries. For Part-147, Aviatize states that courses can be structured against the Part-66 module and type-rating framework, with each candidate's modules, examination results and type-course elements tracked as auditable progress.
TrainingManager365: enterprise training management from Comply365
TrainingManager365 is Comply365's training management product. In December 2025 Comply365 announced the acquisition of MINT Software Systems, whose MINT TMS is widely used by airlines, and MINT now forms a foundation of TrainingManager365. It is aimed at aviation, defence and rail organisations with large training operations: scheduling instructors, simulators and equipment, tracking qualifications, and running digital exams and evaluations. It sits alongside Comply365's content and safety products.
Feature-by-feature comparison
| Capability | AMTOS | Aviatize | TrainingManager365 |
|---|---|---|---|
| Primary market | EASA Part-147 maintenance training organisations | Flight schools, ATOs and flying clubs | Airlines, defence and rail training organisations |
| Courses structured by Part-66 module | ✓ Tracks (e.g. Cat A, B1.1, B2) with every course tagged to its Part-66 module | ✓ Advertised for Part-147 | Not advertised |
| Question bank and online exams | ✓ Part-66 question bank, exam blueprints, auto-graded MCQ, essay exams | ✓ Exam and quiz module with question banks per subject | ✓ Digital exams and evaluations with automated grading |
| Part-147 exam security (identity check, invigilator approval, focus-loss alerts) | ✓ Webcam check-in, invigilator sign-off, live proctoring dashboard | Not advertised | “Secure digital exams” advertised; specifics not published |
| Question rotation across exam attempts | ✓ Attempts drawn from separate question sets | Not advertised | Not advertised |
| Attendance tracking | ✓ Per session and per module | ✓ Ground-class attendance and progress checks | Not advertised |
| Exam eligibility gate on attendance | ✓ Students below the minimum cannot start the exam; overrides logged | Not advertised | Not advertised |
| Practical assessment | ✓ Workshop skills signed off digitally, linked to the certificate | ✓ Practical type-course elements tracked | ✓ Customisable evaluation forms |
| CoR checklist and EASA Form 148 | ✓ Prerequisites validated, then generated from the record | Not advertised | Not advertised |
| Quality management (audits, NCR, CAPA) | ✓ Built in | ✓ Compliance and auditing module | ~ Compliance reporting advertised |
| Scheduling | ✓ Visual scheduler and cohort timetable optimiser | ✓ Integrated scheduling | ✓ Automated scheduling of instructors, simulators and equipment |
| Secure course documents | ✓ Watermarked, no download, timed access windows | Not advertised | ~ Content authoring and digital distribution |
| Student portal or app | ✓ Web portal: calendar, exams, results, materials | ✓ Mobile app | ✓ Web and mobile access |
| Single sign-on, LMS integration and API | ~ On customer request: Microsoft Entra ID and Google SSO; LTI 1.3 with Canvas, Moodle and Blackboard, including grade pass-back; REST API | ~ Pairs with dedicated aviation LMSs | Not detailed publicly |
| Multi-campus group oversight | ✓ Head-office view across campuses, each school's data kept separate | ~ Serves multi-location ATOs | Not advertised |
| Beyond training | Part-147 training only | Billing, accounting and fleet maintenance for flight schools | Part of a wider suite with content and safety management |
| Deployment | Cloud, one isolated database per school | Cloud | Cloud, web and mobile |
How to read this table: ✓ means built in (for AMTOS) or described on the vendor's public website (for the others). ~ means partly covered or described only in general terms. Not advertised means we could not find it in the vendor's public materials; it may still exist, so ask in your demonstration.
Competitor information reflects the vendors' public websites as of September 2026.
Where each platform is strongest
AMTOS: the Part-147 compliance chain
AMTOS is built around the chain an NAA inspector follows: approved curriculum, attendance, eligibility, examination, practical sign-off, certificate. Each step feeds the next automatically. A student below the attendance minimum cannot start an exam, only approved questions reach a live exam, and the CoR checklist and EASA Form 148 are generated from data already validated in the record. Exam sittings add identity verification, invigilator approval and focus-loss monitoring, and repeat attempts draw from separate question sets. For training groups, a head-office view compares results, attendance and quality findings across campuses while each school's data stays in its own database.
Aviatize: one system for a flight school
If your organisation is primarily a flight school or ATO, Aviatize puts scheduling, training records, billing, accounting and aircraft maintenance on the same record, which removes a lot of double entry. Its exam module, ground-class tracking and mobile app cover much of what theory training needs, and it supports a wide range of authorities and training types.
TrainingManager365: scale for airline-type training
For large operators running recurrent training, type ratings and simulator programmes for hundreds or thousands of staff, TrainingManager365 brings the scheduling and qualification-tracking depth of MINT TMS, now within Comply365's wider suite for operational content and safety management.
Where each platform may fall short
AMTOS: deliberately narrow
AMTOS does Part-147 training and nothing else. It has no billing or accounting, no aircraft maintenance tracking, and it is not designed for flight training or Part-145 maintenance management. It is also a newer product with a smaller installed base than the other two, so ask for a live demonstration on your own programme and speak to the team that will support you.
Aviatize: Part-147 is not its home ground
Aviatize is designed around flight training. Its public materials describe Part-147 support at the level of course structure and exam results; Part-147-specific items such as an attendance-based exam eligibility gate, the CoR checklist and EASA Form 148 generation are not described. Check these carefully if they matter to your approval.
TrainingManager365: enterprise focus
TrainingManager365 is aimed at large airline, defence and rail training operations, and its public materials do not describe Part-147 specifics such as Part-66 module structure, CoR or Form 148 generation. Pricing is not published, and a platform of this scope may be more than a single MTO needs.
How to choose
Rather than declaring a winner, match the platform to what your organisation mainly is:
- Choose AMTOS if you are an EASA Part-147 maintenance training organisation, or a group of them, and your priority is a complete, audit-ready Part-147 lifecycle: Part-66 exams, attendance enforcement, practical sign-off and certificate generation in one system.
- Choose Aviatize if you are primarily a flight school or ATO and want scheduling, training, billing and aircraft maintenance on one platform, with maintenance training as a smaller part of your activity.
- Choose TrainingManager365 if you are a large airline, defence or rail training organisation that needs enterprise-scale scheduling and qualification tracking, and possibly Comply365's content and safety products alongside.
What to ask during vendor demos
Whichever platforms you evaluate, ask each vendor to show, not tell:
- The complete exam lifecycle. From question authoring and approval to exam assembly, sitting, grading and result release. How many manual steps are there?
- What happens to a student who is below the attendance minimum and tries to start an exam.
- Certificate generation. What does the system check before it issues a CoR or EASA Form 148? What happens if a prerequisite is missing?
- A resit. Does the second attempt draw different questions from the first?
- The audit trail. For one student, can you see every change, exam result and attendance record, and who made it?
- Data migration. How do your existing student records and question bank get in?
- Data isolation. Is your data in a shared database or a dedicated one?
The vendor that can demonstrate the most complete, least manual workflow for these core Part-147 processes is the right choice for your MTO.
Sources
Competitor information as published on the vendors' websites, checked September 2026:
- Aviatize, About Aviatize
- Aviatize, Part-147 (EASA Maintenance Training Org)
- Aviatize, Aviation Training Management System
- Comply365, Training Management
- Comply365, Comply365 Announces Acquisition of MINT
- MINT Software Systems, MINT TMS
AMTOS capabilities: AMTOS User Manual, version 2.5, September 2026. What's inside AMTOS