Everything needed to fly Medium closed-loop on the path to Monarch first flight. From Monarch Integration to Demo + Gap-Closure Schedule Rev 2. Red = critical path.
Why the critical path was hard to see: across the ~437 schedule rows, predecessor links are populated on
virtually none, and many have no dates — so Smartsheet can't compute a true critical path.
The chain below is reconstructed from start/finish dates.
See data-quality detail →
Critical pathEngineering work streamOther phaseMilestone│ Today
Click any bar, milestone, or task row for detail and a link into the source sheet.
Critical Open Items
11 P1
The flight-readiness task list — Gap-Closure Register (Rev 2), 17 items to close or formally accept before the FRR (Jul 13).
Key blockers: piloted simulator (P3→P1), GVT (Jul 1), battery fire/failure procedures,
MFP3 sensor anomalies, and the new two-action motor-kill / RC layout. Context: MFP3 loss Jun 13 — task saturation a contributing factor.
Closing the flight-readiness gaps is what makes the §927 petition & its supporting documents filing-ready. Resolved values flow into the petition sections and the ops-doc suite.
The petition and readiness documents can't be finalized until the corresponding FRR flight-readiness items are closed. Each open value below is an inbound dependency.
These are the petition's supporting documents (§10) and the readiness package. Flight-crew checklist (CL Rev B / HALO-FCC-001) freezes Jul 10; none frozen yet.
Halo Monarch — Aircraft System Reference
First flight · 0 hrs
Solar-electric high-altitude pseudo-satellite (HAPS), S/N 001. Pilot-facing reference for speeds, limits, systems and known constraints.
Items tagged NOT FINAL are flight-critical values still open in the FRR gap list — confirm before flight.
Representative planform, not to scale. Detailed CAD/schematics live in Teamcenter / the engineering Drive.
Flight-critical values still open
These limits are not finalized and gate flight. Each is tracked as an FRR critical open item.
Sources — Smartsheet (Monarch Integration to Demo, Medium GNC TODO) + Google Drive “927” folder (petition §4 system description). Data refreshed server-side daily at 6 AM (or on-demand from Admin). Schedule/critical path inferred from dates.