Transportstyrelsen enforces strict maintenance documentation requirements for all commercial drone operations in Sweden. Whether you're operating a small quadcopter or larger platforms, proper record-keeping isn't optionalโit's a legal mandate under EASA regulations and Swedish law. This guide walks you through exactly what Transportstyrelsen expects, why maintenance records matter, and how to stay compliant without drowning in paperwork.
What Transportstyrelsen Requires in Maintenance Records
Piyo: "I've got three drones running daily operations. Do I really need to track maintenance for each one?" Poppo: "Not just trackโdocument everything. Transportstyrelsen expects maintenance records showing every inspection, repair, and component replacement before it becomes an issue."
- Pre-flight inspection logs โ Daily checks before every flight
- Component maintenance schedules โ Battery health, motor hours, sensor calibration
- Repair documentation โ What broke, what you fixed, parts replaced
- Calibration certificates โ For IMU, compass, and precision sensors
- Service provider records โ If you outsource maintenance, who did it and when
- Airworthiness compliance โ Confirmation the drone remains safe for operations
- Date and time of maintenance activity
- Aircraft serial number and operator ID
- Type of maintenance performed
- Technician or pilot signature
- Results and findings
Retention Rules: 3 Years Minimum
Moo: "How long do I keep these records?" Piyo: "Transportstyrelsen requires three years minimum. But honestly, most operators find that digital backup across five years protects you if there's ever an audit investigation."
- All maintenance activities (routine or repairs)
- Inspection findings and corrective actions
- Component replacement histories
- Third-party service records
- Digital storage โ Cloud-based systems beat paper filing
- Backup redundancy โ Multiple locations protect against data loss
- Search capability โ When Transportstyrelsen calls, finding records in seconds matters
- Audit trail โ Timestamps and signatures show genuine compliance, not last-minute documentation
EASA Compliance vs. Swedish-Specific Additions
The EASA framework forms the base, but Transportstyrelsen adds specific requirements for Nordic operations:
EASA Standard: Maintenance per manufacturer specs and risk assessment Transportstyrelsen Addition: Pre-flight logs must include weather assessment and airspace clearance confirmation EASA Standard: Component tracking for safety-critical parts Transportstyrelsen Addition: Environmental exposure notes (salt spray, extreme cold, moisture)Sweden's sparse population and diverse weather (coastal salt air, winter conditions, long daylight hours in summer) mean your maintenance strategy should account for climate-specific wear.
Building Your Maintenance Record System
A compliant system tracks:
- Aircraft-level records โ Serial number, registration, total flight hours
- Component-level records โ Battery cycle count, motor hour meters, sensor calibration dates
- Maintenance events โ Date, technician, work performed, parts used
- Inspection results โ Findings, corrective actions, approval to return to service
- Service provider credentials โ Certifications and qualifications of external technicians
Common Gaps That Trigger Audit Findings
Transportstyrelsen audits often identify:
- Incomplete pre-flight logs โ Missing dates or pilot signatures
- No component tracking โ Battery age and cycle count not recorded
- Missing repair documentation โ "Fixed motor" without date or parts used
- Uncertified technicians โ Third-party work without provider credentials
- No airworthiness confirmation โ No documented sign-off after maintenance
Why MmowW Solves This at kr67/Drone/Month
Poppo: "Manual maintenance tracking across multiple drones creates admin overhead that compounds fast. Especially when Transportstyrelsen calls and you need everything yesterday." Moo: "How does MmowW help?" Poppo: "It automates the entire record-keeping process: pre-flight checklists tied to maintenance history, automatic retention tracking, and one-click audit reports."
- Automated pre-flight checklists โ Pilots complete forms, system auto-dates and signs
- Component lifecycle tracking โ Battery cycle counts, motor hours, sensor calibration reminders
- Maintenance scheduling โ Calendar alerts before critical maintenance windows
- Audit-ready reports โ Export 3-year records in formats Transportstyrelsen expects
- Multi-drone scaling โ Add drones without proportional admin growth
FAQ
Q: Do I need to maintain records for drones I only fly recreationally?A: Recreational operations under 25kg don't require formal maintenance logs, but commercial operators (including low-altitude surveying or industrial work) must document everything.
Q: What if I use a repair service? Do they provide the documentation I file?A: They may provide receipts, but you're responsible for integrating those into your official maintenance record. Transportstyrelsen wants continuity showing all work in one place.
Q: Can I use digital signatures for maintenance records?A: Yes. Transportstyrelsen accepts digital timestamps and e-signatures as long as they create an audit trail showing who signed, when, and what they confirmed.
Q: How do I prove a technician was qualified to do maintenance?A: Retain copies of their certifications and qualifications. Include that in the service record entry so the audit shows due diligence in vendor selection.
Q: Is MmowW mandatory for compliance?