MRO that the regulator can actually use.

AMRO Pro is built by SOS Services for the operators and MROs that fall between two stools: too big for spreadsheets, too small for a seven-figure SAP rollout. We started with one observation — most MRO software was designed for the IT department, not the inspector.

The problem

Aircraft maintenance is a paperwork industry pretending to be a software industry. Operators run spreadsheets to track AD compliance, paper binders for work orders, and email threads for sign-offs. When the inspector arrives, someone spends a week reconstructing the audit trail.

The existing software market has two answers. One: a million-dollar enterprise suite that takes a year to implement and freezes processes the day it goes live. Two: vertical point tools (one for parts, one for MPDs, one for work orders) that don't talk to each other. Neither serves the operator running 10–80 aircraft.

What we built

• Multi-regulator from day one — FAA, EASA, CAAC, SACAA. Each authority's forms, sign-off chains, and deadlines are modeled in the data layer, not patched into a UI.
• MPD-driven work orders — a maintenance planning document generates the work orders, the work orders link back to MPD revisions, and the audit chain falls out naturally.
• Parts traceability — chain-of-custody from PO to installation, with airworthiness tags preserved. The data model treats a serial-numbered rotable as a first-class entity, not a row in an Excel sheet.
• Task-level sign-off — every task signed by the named technician, against the relevant license category, with timestamp.
• Modern engineering — Express microservice, React frontend, Postgres with row-level security. Multi-tenant. Open schema.

Where it stands

In closed pilot with regional operators and independent MROs. Backend microservice (services/amro-api/) is operational, exposing master data, work orders, parts, MPDs, and directives. Pilot customers' fleets are loaded; first real inspections coming.

Who we are

AMRO Pro is the aviation-maintenance product in the SOS Services studio. Its sister product is Aviation AI Pro, which handles the safety-data side (FDR parsing, approach analytics). Together they cover the operational and safety halves of an aviation operator's data.