Weather is the number one factor in every flight safety decision we make. At Hannan-Airlines, we don't negotiate with clouds. Understanding our weather standards helps you understand why we sometimes say "not today" -- and why that's a very good thing.
The FAA sets minimum visibility and cloud clearance requirements for Visual Flight Rules (VFR) operations. These vary by airspace class, altitude, and time of day. Here's what the regulations require -- and what we actually fly by.
| Airspace | Visibility | Cloud Clearance | Notes |
|---|---|---|---|
| Class G (below 1,200 ft AGL, day) | 1 statute mile | Clear of clouds | FAR 91.155 -- the bare minimum |
| Class G (below 1,200 ft AGL, night) | 3 statute miles | 500 ft below, 1,000 ft above, 2,000 ft horizontal | Night VFR requires more margin |
| Class E (below 10,000 ft MSL) | 3 statute miles | 500 ft below, 1,000 ft above, 2,000 ft horizontal | Most enroute airspace |
| Class B | 3 statute miles | Clear of clouds | Requires ATC clearance to enter |
| Hannan-Airlines Personal Minimums | 5 statute miles | 3,000 ft ceilings minimum | Because our pilot likes being alive |
The FAA minimums are legal minimums -- not recommended minimums. Flying a single-engine Piper Archer VFR at 1 mile visibility is technically legal in Class G during the day, but it's also technically legal to eat gas station sushi. Just because you can doesn't mean you should. Our personal minimums of 5 SM visibility and 3,000 ft ceilings give us room to maneuver, find alternates, and generally keep our heart rate at a reasonable level.
Every flight begins long before the engine starts. The go/no-go decision is the most important choice a pilot makes, and it starts with thorough weather briefing and honest self-assessment.
Official FAA Flight Service weather briefing. Provides standard, abbreviated, and outlook briefings. This is the gold standard -- if you file, it's on record.
Our primary electronic flight bag. Combines METARs, TAFs, PIREPs, radar, satellite imagery, and forecast models into one beautiful, slightly addictive interface.
NOAA's Aviation Weather Center. METARs, TAFs, AIRMETs, SIGMETs, prog charts, and more. Free, comprehensive, and exactly as exciting as it sounds.
The FAA recommends the PAVE checklist as a structured approach to preflight risk assessment. If any single element raises concern, the flight doesn't happen.
Before every flight, the pilot runs through this personal fitness assessment. It's not just about weather -- it's about the whole picture. If any item is a "no," we don't go.
Mother Nature has a whole toolkit of ways to ruin a perfectly good flight plan. Here are the hazards we take most seriously, ranked by how much they make our pilot check the forecast one more time.
Convective activity produces extreme turbulence, hail, lightning, microbursts, wind shear, and tornadoes. A Piper Archer in a thunderstorm is like a paper airplane in a washing machine.
The Piper Archer (PA-28-181) is NOT approved for flight into known icing conditions. Even light icing can degrade performance, increase stall speed, reduce lift, and add hundreds of pounds of weight. There is no "a little ice is okay" with this aircraft.
Radiation fog forms on clear, calm nights when the ground cools rapidly -- common in valleys and near water. Advection fog forms when warm, moist air moves over a cool surface -- classic along the New England coast. Both can drop visibility to zero in minutes.
Wind shear is a sudden change in wind speed or direction over a short distance. Microbursts produce intense downdrafts that can slam an aircraft into the ground during approach or departure. Most dangerous below 1,000 ft AGL -- exactly where we spend a lot of time in the pattern.
Mechanical turbulence: caused by wind flowing over obstacles (buildings, trees, terrain). Thermal turbulence: caused by unequal surface heating on warm days. Frontal turbulence: found along weather fronts. Clear air turbulence: found at higher altitudes near jet streams. Light chop is normal. Moderate or greater is a no-go for our comfort and your coffee.
Mountain waves form when stable air flows over mountain ridges, creating severe turbulence and strong up/downdrafts on the lee side. Density altitude is the altitude the aircraft "thinks" it's at -- high temperatures and low pressure make the air thinner, degrading performance. On a hot summer day, our Archer may need a longer runway and climb slower.
New England weather has a reputation, and it's well-earned. Each season brings its own set of challenges. As the old saying goes: "If you don't like the weather in New England, wait five minutes."
The season of "will it or won't it clear up?"
Beautiful mornings, exciting afternoons.
Peak foliage flights, if the weather cooperates.
The season where the Archer gets a lot of rest.
We take a conservative, no-pressure approach to weather. Here's what you can expect from us -- and what we ask of you in return.
We NEVER pressure passengers to fly in marginal weather, and we ask the same courtesy in return. "But we drove two hours to get here" is not a valid reason to fly into a cold front. Trust us, the drive home is much better than the alternative.
If the pilot says no-go, it's a no-go. No questions, no guilt, no "but the sky looks fine from here." The pilot has access to information, training, and a healthy dose of self-preservation instinct that informs every decision.
Flights can be rescheduled at any time due to weather -- no charge, no hassle, no hard feelings. We'd rather disappoint you on the ground than scare you in the air. That's not a tagline; it's our operating philosophy.
We perform a weather assessment 24 hours before your scheduled flight and again 2 hours before. You'll receive a notification with the outlook at each check. If conditions are trending unfavorably, we'll discuss options early so nobody's surprised.
When we tell you a flight is cancelled due to weather, this is what we're looking at. METARs are current conditions; TAFs are forecasts. They look like a cat walked across the keyboard, but they actually make sense. Mostly.
This particular METAR shows a beautiful day for flying: 10 miles visibility, high ceilings, moderate wind. The gusts to 20 knots would warrant attention to crosswind component on the runway in use, but this is generally a solid "go" day. If only they were all like this.
Now that you know we take weather seriously (very, very seriously), let's plan your next adventure. The Archer awaits -- weather permitting, of course.
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