Part 121 · Network-aware scheduling
Maintenance-station routing
As pairings and aircraft routing are built, the board checks each tail's next-due maintenance check against the stations that are both reachable and rated for that check, and flags any tail whose check won't fit a capable station before its limit. The at-risk chip surfaces on the routing view so the crew desk catches a stranded check while there's still time to swap the routing. It is advisory: it flags the risk on the board, it does not block or prevent a dispatch. It composes with — never replaces — the FAR 117 / 121.467 legality the scheduler already enforces at assignment time. It replaces discovering a misrouted check after the line is already flying.
Launching the first quarter of 2027.
Illustrative — every screen reflects your own data.
Who it's for
Crew desks and routing planners at a Part 121 operation who, once this ships, want a stranded maintenance check caught while there's still time to swap the routing.
What it replaces
Discovering a misrouted check by hand after the line is already flying.
What maintenance-station routing gives you
- In development — will check each tail's due check against capable stations
- Advisory at-risk chip on the routing view — never blocks dispatch
- Composes with the FAR 117 / 121.467 legality the scheduler already enforces
An advisory at-risk chip on the routing view
This capability is in development. Once it ships, as pairings and aircraft routing are built the board will check each tail's next-due maintenance check against the stations that are both reachable and rated for that check, and flag any tail whose check won't fit a capable station before its limit. The at-risk chip will be advisory — it will surface the risk on the routing view, but it will never block or prevent a dispatch.
- In development — will check each tail's due check against capable stations
- Advisory at-risk chip on the routing view — never blocks dispatch
Composes with the legality the scheduler already enforces
The planned routing advisory would compose with, not replace, the FAR 117 / 121.467 legality the scheduler already enforces at assignment time today. It is in development and not yet in production — the legality enforcement is what's live now, and the routing advisory is the part that's coming.
- Composes with the FAR 117 / 121.467 legality the scheduler already enforces
- Advisory at-risk chip on the routing view — never blocks dispatch
How an operator uses this
This capability is in development. Once it ships, as pairings and aircraft routing are built the board will check each tail's next-due maintenance check against the stations that are both reachable and rated for that check, and flag any tail whose check won't fit a capable station before its limit. The at-risk chip will be advisory — it will surface the risk on the routing view so the desk catches a stranded check in time, but it will never block or prevent a dispatch — and it will compose with, not replace, the FAR 117 / 121.467 legality the scheduler already enforces today.
Illustrative — every screen reflects what's in your own data, nothing more.
How it works
Maintenance-station routing, step by step
Planned: as routing is built, the board will check each tail's due check against reachable, rated stations.
Planned: a tail whose check won't fit a capable station before its limit will get an advisory at-risk chip.
Planned: the chip will surface the risk on the routing view — it will never block a dispatch.
Planned: it will compose with the FAR 117 / 121.467 legality the scheduler already enforces.
Questions
Maintenance-station routing — frequently asked
Will maintenance-station routing block a dispatch?
No. It is planned to be advisory — it will flag an at-risk tail on the routing view, but it will not block or prevent a dispatch. This capability is in development.
Is maintenance-station routing available today?
Not yet — it is in development. The FAR 117 / 121.467 legality the routing check will compose with is already enforced at assignment time today; the routing advisory is the part that's coming.
Keep exploring
Other features in Part 121
Monthly bid packages
Per base × equipment × position, DRAFT → OPEN → CLOSED → AWARDED → PUBLISHED.
Deep diveLINE + rule-based PBS
Seniority-ordered awards in either LINE or rule-based PBS mode.
Deep diveIdempotent award engine
A pure awards function — re-running replaces prior awards with the same result.
Deep diveCrew pairing builder
Per-line pairing CRUD inside each package, with a reserve-pool fallback.
Deep diveFAR 117 enforcement
Flight-time caps checked at crew-assignment time — a busting assignment is blocked before it saves.
Deep diveFAR 121.467 cabin-crew enforcer
Parallel duty/rest enforcement for flight attendants.
Deep diveUnion / CBA contract overlay
Layer your bargaining unit's stricter limits on top of the FAR floor; the scheduler enforces whichever is more restrictive.
Deep diveCrew duty board
Live duty used per crew member, derived from shifts and the flight log.
Deep diveFatigue risk board
Deterministic and explainable — blends documented duty load with self-reported sleep signals. Not an AI prediction model.
Deep diveReserve crew
LONG_CALL + SHORT_CALL with callout and no-contact tracking.
Deep diveOpen-time / trip trading
Drop / pickup / swap with planner approval; auto-approves when no FAR 117 bust.
Deep diveMEL — minimum equipment list
Category A/B/C/D deferrals with auto-rolling expiry; expired items ground the aircraft.
Deep diveAQP (14 CFR 121 App. Y)
Per-fleet proficiency objectives and CQ-cycle enrollments.
Deep diveFA recurrent training
121.421 initial / recurrent / transition / overwater on a 12-month cycle.
Deep diveRecurrent calendar
Four-month grid across credentials, FA recurrent, and inspections.
Deep diveDrug & alcohol random draws
Random-selection records with a full audit trail.
Deep diveAircraft program
ADs, SBs, and life-limited parts with inspection clocks per tail.
Deep diveCargo & ULD
IATA ULD types, an AC 120-85-styled inspection clock (non-mandatory FAA guidance), and hazmat tags on the build-up manifest.
Deep diveLive aircraft tracking
FlightAware position + ETA on the ops board (bring-your-own AeroAPI key).
Deep diveTrip-sheet briefings
METAR/TAF + NOTAMs + fuel + crew signature, print-ready; pax/cargo weight captured for your own W&B process.
Deep divePredictive maintenance
A 0–100 AOG-risk score per tail — deterministic and explainable, with the contributing factors shown.
Deep diveFleet utilization
Per-tail 30 / 90 / 365-day hours with an inspection countdown.
Deep diveManager daily digest
Today's ops and attention items emailed to managers each morning.
Deep diveReports & exports
Utilization, currency, and completion KPIs with CSV export.
Deep divePilot dashboard
A pilot's own home: next flights + FAR 117 duty standing, report-for-duty check-in, PBS bid status, 61.51 logbook, currency and credentials.
Deep diveFlight-attendant dashboard
Trips and schedule, 14 CFR 121.421 recurrent-training status, credentials, check-in, manuals, and fatigue reporting.
Deep diveCrew planner & dispatch
Bid packages and awards, reserve and open-time, and the live ops / dispatch board for the people running the operation.
Deep diveManager & compliance
Fleet, recurrency, FAR 117 oversight, and audit-ready compliance — role-scoped, one Part at a time.
Deep diveCrew-base efficiency
Surfaces deadhead and out-of-base overnights so pairings can be built to originate and terminate at a crew member's base.
Deep diveWeighted efficiency score
A configurable weighted score (abstract points, lower = better) over deadhead, overnights, repositioning, and maintenance-fit slack — set your own weights.
Deep diveExplainable swap / re-base suggestions
Deterministic aircraft-swap and re-base proposals that improve the score — every suggestion shows its reasoning. Not AI, not a guaranteed optimum.
Deep diveEvery Part 121 workspace also includes the platform-wide backbone — logbook, credentials, compliance, reporting, and audit trail.
See the backboneSee maintenance-station routing on your operation.
It's part of the in-development layer for Part 121, landing Q1 2027 — join the waitlist to get on it first.