If you're operating commercial drones in New Zealand under Part 102, maintenance records aren't just good practice—they're a mandatory element of your drone exposition. The Civil Aviation Authority (CAA) conducts periodic audits, and your ability to demonstrate consistent maintenance directly impacts your operational approval. This guide walks you through exactly what the CAA expects, why it matters for your UAOC application, and how to stay compliant.
Understanding Part 102 Maintenance Mandates
Piyo: "So Moo, I just got my UAOC approved. Does that mean I can skip maintenance records now?"
Moo: "Not at all! Your exposition is a living document, Piyo. CAA audits will specifically check your maintenance logs. If you can't produce evidence of routine maintenance, you risk suspension."
- Aircraft logbook entries for every flight and maintenance action
- Component replacement records (batteries, propellers, sensors)
- Pre-flight inspection checklists documented and signed
- Defect reporting and rectification logs
- Software/firmware update trails
The Exposition Connection: Why Records Matter
Your drone exposition is essentially your operational contract with CAA. It demonstrates how your organization manages safety, maintenance, and compliance. Maintenance records are evidence that you're executing what your exposition promises.
Poppo: "Think of your exposition like a recipe, and maintenance records like the photos of you actually cooking. CAA wants to see both the recipe and the proof you're following it!"
What CAA Actually Checks During Audits
When the CAA conducts Part 102 surveillance visits, they examine:
- Maintenance interval compliance — Are you servicing at manufacturer-recommended intervals?
- Defect closure — Did you document how defects were identified, reported, and resolved?
- Airworthiness sign-offs — Does a qualified person certify the aircraft as safe before each operation?
- Traceability — Can you prove who performed each maintenance action and when?
- Parts provenance — Where did replacement components come from? Are they genuine?
- Temporary suspension of operations (7–30 days)
- Formal enforcement action
- UAOC revocation in severe cases
Building a Compliant Maintenance Record System
Essential Record Elements
Each maintenance action should include:
- Date and time
- Aircraft ID/registration
- Maintenance type (preventive, corrective, urgent)
- Work performed (specific description)
- Components replaced (part numbers, serial numbers)
- Maintenance person's name and license number (if applicable)
- Flight hours before and after
- Airworthiness sign-off
Preventive Maintenance Schedule
Create a master maintenance schedule aligned with your aircraft manufacturer's recommendations:
| Interval | Action | Frequency |
|---|---|---|
| Pre-flight | Visual inspection, battery check | Every flight |
| 50 flight hours | Motor/ESC inspection, gimbal calibration | Monthly (typical) |
| 100 flight hours | Propeller replacement, sensor recalibration | Quarterly |
| 250 flight hours | Full airframe inspection, firmware audit | Biannually |
| 500 flight hours | Major overhaul or aircraft retirement | Annually |
Piyo: "That's a lot of intervals to track manually..."
Moo: "Exactly why you need a system. MmowW tracks your aircraft lifecycle—flights, maintenance, components—all in one place. When CAA audits, you're not scrambling."
Exposition Documentation: The Paper Trail
Your exposition must outline:
- Maintenance policy — How your organization ensures airworthiness
- Record retention period — Minimum 24 months (CAA standard)
- Access controls — Who can log maintenance? Who approves?
- Defect management — How are technical issues escalated?
- Audit trail — How are records protected from tampering?
> "All aircraft maintenance is logged in the MmowW platform within 2 hours of completion. Records are reviewed by the Operations Manager before flight authorization. Defects are reported to the CAA within 5 working days if they affect airworthiness."
The CAA's Post-Approval Audit Timeline
- Month 1–3 post-UAOC: No CAA visit (grace period)
- Month 4–6: Initial compliance audit (mandatory)
- Every 12–24 months: Routine surveillance audit
Digital vs. Paper: Why CAA Prefers Digital
While technically acceptable, paper logbooks are high-risk for Part 102 operators:
- No audit trail — Changes can't be detected
- Lost records — Water damage, misplacement common
- CAA frustration — Paper requires manual data entry during audits
- Defect tracking — Hard to flag recurring issues across aircraft
- Instant search by date, aircraft, or issue type
- Export capabilities (PDF, CSV for auditors)
- Role-based access controls
- Immutable audit logs
Defect Reporting: A Legal Obligation
Part 102 requires you to report certain defects to the CAA:
- Structural damage (cracks, delamination)
- Power system failures (motors, batteries)
- Safety-critical software issues
- Collision damage (even if aircraft still flies)
Poppo: "Report within 5 working days if the defect affects airworthiness. MmowW flags these automatically—you can't forget."
Frequently Asked Questions
Q: How long must I keep maintenance records?A: Minimum 24 months from the date of maintenance. CAA recommends 5 years for commercial operators planning long-term UAOC continuation.
Q: Can I use photos instead of written logs?A: Photos are supplementary but not sufficient. You must maintain a written record with date, description, and sign-off by a qualified person.
Q: What if my aircraft has a minor fault but I still fly it?A: You must document the fault, assess whether it affects airworthiness, and either fix it before the next flight or report it to CAA. Flying with known defects can result in prosecution.
Q: Is maintenance record software required?A: Not legally required, but strongly recommended by CAA for Part 102 operations. MmowW's maintenance module is compliant with all NZ requirements and directly exports audit-ready reports.
Q: How do I handle maintenance on leased aircraft?A: You're responsible for ensuring maintenance records are complete before taking possession. Both lessor and lessee should maintain copies. Your exposition should clarify this split responsibility.
Moving Forward: The MmowW Advantage
MmowW's maintenance module automates the entire process:
- Automated scheduling based on flight hours and calendar intervals
- Defect flagging with CAA report integration
- Exposition sync — your records are your exposition evidence
- Audit-ready exports in 30 seconds
- Multi-aircraft tracking for operators with fleets
The Takeaway
Maintenance records are your shield against CAA enforcement and your proof of operational excellence. In Part 102, they're not optional paperwork—they're the foundation of your UAOC.