Who should read this: Directors of maintenance, reliability program managers, and
maintenance controllers responsible for statistical analysis of fleet maintenance events
as required for operators of turbine-powered large aircraft.Required permission:
maintenance_ops — read to view reliability data, update to
create events and manage alert levels.Regulatory basis: 14 CFR 135.421(e) requires certificate holders operating
turbine-powered large aircraft to have a reliability program as part of their continuing
analysis and surveillance system (CASS). The program must provide statistical analysis of
maintenance events to identify adverse trends and take corrective action before they result
in failure during operations.Reliability Program Overview
The reliability program in PlaneConnection collects and analyzes five categories of maintenance events to identify adverse trends:
Events are categorized by ATA 100 chapter code, enabling system-level trend analysis across
the fleet.
The Reliability Dashboard
Navigate to Maintenance > Reliability to see the reliability program dashboard. The page provides:- Event summary cards — Total events by type for the selected period
- Trend charts — Event rates over time by ATA chapter
- Fleet comparison — Per-aircraft event rates normalized by flight hours
- Alert status — Active Stage 1, 2, and 3 alerts
Record a Reliability Event
Analyze Trends by ATA Chapter
The reliability dashboard provides several analysis views:Event rate charts
Bar and line charts show event rates per 1,000 flight hours by ATA chapter. Use the date range selector to compare different periods (monthly, quarterly, annually).Top systems
A ranked list of ATA chapters by event count highlights the systems with the most reliability concerns. Click any ATA chapter to drill down into the individual events.Per-aircraft comparison
Compare reliability metrics across aircraft in your fleet to identify tail-number-specific issues versus fleet-wide trends.Respond to Alerts
When an alert is triggered:Integration with Safety Module
Reliability events with Stage 2 or Stage 3 alerts should be reported to the Safety Management System for inclusion in the organization’s safety risk management process per 14 CFR Part 5. From any reliability event, click Report to Safety to create a linked safety report.Manage Discrepancies
Discrepancies feed into the reliability program as MAREPs.
Compliance Dashboard
Monitor fleet compliance alongside reliability metrics.
Maintenance Forecast
Plan maintenance actions driven by reliability findings.
Manage Work Orders
Create work orders for reliability-driven corrective actions.