Living Document Notice
Staged 2026-09-28. Living revisions and interconnected notes live in the Bosun PKM Garden.
Engine Hour Logging and Preventative Maintenance Intervals
Mechanical reliability in automotive and marine engines depends on strict adherence to operating hour thresholds rather than calendar time alone. Squadron logs periodic engine hours to schedule preventative maintenance before failure occurs.
Maintenance Invariants
- Operating Hour Accumulation: Regular logging of engine hours triggers automated service warnings for oil changes, filter replacements, and belt inspections.
- Component Lifecycle Tracking: High-wear parts record individual service histories to predict remaining operating life accurately.
- Double-Entry Cost Pairing: Parts purchases and professional servicing invoices link directly into adjacent accounting ledgers.
Proactive engine hour tracking prevents catastrophic mechanical failures and extends operational readiness.
- Directus Target: squadron-blog
- Garden Source Reference: MOC - Squadron Fleet Engine, MOC - Drydock Property Engine, QTM-1001 - Plain-Text Accounting and Double-Entry Ledgers