eVTOL / Powered-Lift Evidence-Boundary Map
A DVP row citing DO-311A or MOC-3 reads as authoritative. Whether it represents what was actually demonstrated depends on conditioning detail that routinely drops out during transcription — trigger method, SOC, article age, population coverage. This card maps five eVTOL qualification evidence sources: what each test establishes, what it excludes, and which fields have to reach the DVP row intact. The standards landscape was mapped in the prior card; the problem here is evidence that implies more coverage than it delivers.
eVTOL / Powered-Lift Evidence-Boundary Map
A DVP row citing DO-311A or MOC-3 reads as authoritative. Whether it represents what was actually demonstrated depends on conditioning detail that routinely drops out during transcription — trigger method, SOC, article age, population coverage. This card maps five eVTOL qualification evidence sources: what each test establishes, what it excludes, and which fields have to reach the DVP row intact. The standards landscape was mapped in the prior card; the problem here is evidence that implies more coverage than it delivers.
Worked Evidence Examples
Predicting Battery Degradation for eVTOL Aircraft: Methods, Challenges, and Future Trends
A single "SOH retirement" row collapses three failure criteria that bind independently. Capacity, power capability, and safety limit each require a separate acceptance line.
Tier 3 model outputs for specific commercial cells. These are not thresholds from FAA, EASA, or RTCA governing documents. Cite accordingly.
Worked Evidence Examples
Dynamic Drop Testing of eVTOL Energy Storage Systems Part 2: Deformation and Post-Test Forensics Results
ZSOC testing establishes mechanical-deformation morphology only. It does not bound charged-pack energetic response, and the authors say so.
Phase 1 of a multi-phase NASA/NIAR crashworthiness program. One OEM module, one impact condition. Authors explicitly disclaim certification applicability.
Worst-Case Characterization
MOC-3 §7.(a)(3)(ii) defines worst case relative to a specific response: the combination of test conditions that maximizes the potential for cell-to-cell propagation at battery system level. The response being maximized is propagation, which is distinct from maximum thermal energy release or maximum gas generation — a cell that produces the most energetic runaway at a given SOC may not produce the highest propagation risk at that SOC if most energy is expelled rather than conducted to neighbors.
This distinction matters for DVP construction because the four characterization dimensions — trigger method, SOC, heater position, heating rate — interact. The CRD states explicitly that considering these variables in isolation is insufficient. The worst-case combination must be found empirically across the matrix, not assumed from any single-variable sweep.
The characterization record serves a specific structural function in the MOC-3 evidence chain: it is what justifies using a single-cell trigger for system-level non-propagation testing. EASA's CRD ties the two directly. An incomplete worst-case determination undermines the basis for the single-cell approach, which means the system-level test design is unsupported.
