Summary
For each airfield in the route, compute density altitude from temp, QNH, and elevation. Highlight when DA > field elev + 2000 ft (rough perf-degradation threshold).
UX
Formula
`DA ≈ pressure_alt + 120 × (OAT − ISA_temp_at_pa)`
`pressure_alt = elev + 30 × (1013 − qnh)`
`ISA_temp_at_pa = 15 − 1.98 × (pa / 1000)`
Why
DA dominates takeoff performance on hot Israeli summer days from LLHA / LLMG / LLMZ.
Severity
Enhancement — high pilot utility, very low implementation risk (pure math, no external dep).
Summary
For each airfield in the route, compute density altitude from temp, QNH, and elevation. Highlight when DA > field elev + 2000 ft (rough perf-degradation threshold).
UX
Formula
`DA ≈ pressure_alt + 120 × (OAT − ISA_temp_at_pa)`
`pressure_alt = elev + 30 × (1013 − qnh)`
`ISA_temp_at_pa = 15 − 1.98 × (pa / 1000)`
Why
DA dominates takeoff performance on hot Israeli summer days from LLHA / LLMG / LLMZ.
Severity
Enhancement — high pilot utility, very low implementation risk (pure math, no external dep).