Better fuel burn. Less abrupt ATC changes. Know your options before the next “slow for spacing.” Scenario: ATC says: “Cross BUGSY at 210 knots GMD.”
If given “GMD 210 knots,” ask: “Any restriction on reducing below 210 for time?” Often the answer is “No, just don’t be late to the fix.” Option 2: Short / Social Media Style (Instagram, LinkedIn, Threads) GMD ≠ one speed only ✈️ gmd speed time alternative
🔁 Step-down speeds ⏱️ Time-based (not speed-based) ↪️ Path stretching (S-turns en route) 📉 Gradual deceleration ⛽ Mach hold (high alt) Better fuel burn
Alternatives to a fixed GMD speed:
| Alternative | How it works | Best for | |-------------|--------------|-----------| | | 240 → 210 → 180 | Long delays (>3 min) | | Constant decel | Slowly reduce over distance | Short delays | | Time-based | Ignore speed, aim for fix time | Radar environment | | Path stretch | 10–20° off course then back | No low-speed buffet | ❌ Don’t just set 210 and forget it
1 min delay = reduce speed ~10 kts below normal cruise for 50–60 NM.
❌ Don’t just set 210 and forget it. ✅ Alternative speed techniques: