Extreme Heat Precautions for Pilots & Aircraft

Details

It's summer in North Texas. If you've lived here for a while you know the drill: it will cool off eventually - maybe September or October. But even here the heat can sometimes build to extreme values if we get a high-pressure heat dome that hangs around for days at a time. Temperatures can soar past 100 each day and they don't come down until long after sunset. Here are a few reminders for how to keep yourself and your plan safe when the heat becomes extreme:

Pilot Personal Safety

Heat affects everyone differently, but when the temperatures and heat index are above 105, they do affect us all and sometimes in subtle ways. Expect that your performance will be affected and take precautions before your flight:

  • Hydrate aggressively before and during preflight. AOPA notes dehydration can impair decision‑making and mimic hypoxia symptoms.

  • Wear a hat and sunscreen—concrete ramps radiate heat and intensify sun exposure.

  • Use caution touching metal surfaces (cowling, yoke, door handles). These can exceed 140°F in direct sun.

  • Limit time on the ramp—perform preflight efficiently and step into shade when possible.

  • Watch for heat stress symptoms: dizziness, headache, nausea, rapid breathing. And watch out for any unusual symptoms or behaviors in your passengers, students (or instructors).

 

✈️ Aircraft Preflight & Care in Extreme Heat

  • Check tire condition carefully—heat softens rubber and increases pressure. Savvy Aviation notes that overheated tires can lose elasticity and are more prone to flat‑spotting or failure on landing. The heat induced density altitude means you will be landing faster than normal when those tires hit the pavement.

  • Check oil level and temperature trends—high ambient temps reduce cooling efficiency, especially in Cessna 172s and Piper Arrows with tightly cowled engines.

  • Be cautious with avionics cooling—long ground delays with avionics powered up can cause overheating.

 

🛫 Density Altitude: What Yesterday Looked Like in Dallas

Yesterday’s peak density altitude in the Dallas area reached ~3,000–3,500 ft DA despite field elevations near 600–700 ft MSL. This is typical when temperatures exceed 100°F.

Operational Effects (AOPA & FAA Safety Team guidance)

  • Longer takeoff roll — expect 10–25% longer compared to a 90°F day.

  • Reduced climb performance — Cessna 172s may lose 150–250 fpm of climb rate at high DA.

  • Higher true airspeed on landing — even if indicated airspeed is the same, true airspeed increases, meaning longer landing distance.

  • Stress on tires -— You'll be landing faster so your tires will have to jump from zero to 70 mph or more in an instance while simultaneously hitting a scorching hot pavement and absorbing whatever load your descent rate gives it.

 

📏 Takeoff & Landing Distance Considerations

Using typical POH performance adjustments:

At 100°F vs 90°F (Cessna 172 & Piper Arrow)

  • Takeoff distance increases 10–20%

  • Landing distance increases 10–15%

  • Groundspeed on landing increases 3–5 knots due to higher true airspeed

  • Climb gradient decreases significantly—important for obstacle‑limited runways

These numbers vary by aircraft and loading, but they match FAA and AOPA performance planning guidance.

 

🛬 Runway Environment Notes

  • TKI’s 7,000 ft concrete runway provides generous margin, but nearby airports like KJDD with an asphalt 4000 foot runway have shorter and hotter runway surfaces.

  • Concrete ramps and runways can exceed 150°F, increasing tire wear and reducing braking effectiveness.

  • Expect longer distances on landing due to higher ground speed in the thinner air.

 

🔧 A&P‑Backed Heat Tips

(General guidance summarized from Savvy Aviation and multiple A&Ps)

  • Avoid riding brakes—hot brakes glaze pads and reduce stopping power.

  • Allow engines to cool briefly after shutdown before adding oil.

  • Avoid prolonged high‑power run‑ups on hot days—cylinder head temps rise quickly.

  • Check for vapor lock symptoms in fuel‑injected aircraft (Piper Arrow): rough running, hard starting after refueling.

 

📌 Quick Takeaways for Members

  • Hydrate, protect yourself from sun, and avoid touching hot metal.

  • Expect longer takeoff and landing distances and reduced climb performance.

  • Be mindful of tire condition, brake heat, and engine cooling.

  • Use POH performance charts—don’t rely on “normal” numbers in extreme heat.

  • Consider runway length carefully when flying to shorter fields around North Texas.