Per-aircraft-type MEL catalog plus per-tail deferral ledger. FAA categories auto-roll the deferral window (3 / 10 / 120 days for B/C/D), expired deferrals ground the aircraft, mechanics sign off with their cert number, and the audit log keeps the entire history. 14 CFR 91.213 + 121.628 + 135.179 ready.
B737-800, BE350, CRJ-200, etc. — once per fleet type, reused across every tail. Imports cleanly from manufacturer MELs.
Each deferral inherits Category A/B/C/D from the catalog. Window auto-computes from deferred-at + category days.
Expired deferrals ground the aircraft. The /app/mel KPI strip + dispatch sheet surface them immediately.
Cert number, procedure compliance note, deferred-by user — all logged with timestamps.
Open deferrals roll into the dispatch sheet so the captain sees procedure-compliance items before taxi.
Catalog views grouped by aircraft type for ATA chapter scan + audit prep.
Yes — Category A has no calendar limit (specific conditions in the catalog), B is 3 days, C is 10 days, D is 120 days. The system auto-computes expiry from the deferral date + category.
Open deferrals past their expiry date trigger a red banner on /app/mel: the aircraft is no longer airworthy until the item is fixed (closed) or the deferral is voided with documented reason.
Yes — the catalog table accepts CSV import for ATA chapter + item number + name + category + qty + procedures. Most operators import a Boeing / Airbus MEL once per fleet type, then maintain incrementally.
Any user with MAINTENANCE+ role can open a deferral; the form captures mechanic cert number alongside the user's identity. Audit log records actor + cert + procedure compliance for FAA inspection.
Yes — the dispatch sheet pulls in open deferrals for the assigned aircraft so the captain sees what's deferred + what procedures to apply before taxi.
Import your fleet MEL, deferral history, and run a side-by-side against your current tool.
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