The legal weather minimum is the edge of what the rules permit, not a sensible place to plan a flight. Personal minimums are the limits you set for yourself, with a margin built in, so that the hard decisions are made on the ground and in advance.
This is general educational information, not operational, legal, or regulatory advice. Rules differ by authority and change over time. Always verify against current official sources and follow your operator's approved procedures.
Why a legal minimum is not a target
A flight flown right at the legal visibility or cloud-clearance minimum leaves no room for the forecast to be slightly wrong, for your scan to be a little rusty, or for the workload to spike. The FAA's guidance on aeronautical decision making, AC 60-22, and the risk-management chapter of the Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25) both make the same point: a safe pilot operates with a margin, and the size of that margin should reflect the pilot, not just the regulation.
Personal minimums are how you make that margin concrete. They are a written set of conditions, tighter than the legal floor, that you will not fly below. Because they are written down before you fly, they take the decision out of the moment when get-there-itis and outside pressure are strongest.
What to set a limit on
A useful set of personal minimums covers the things that actually bite:
- Ceiling and visibility, set comfortably above the legal minimum for your airspace, with tighter values for night.
- Surface wind and crosswind component, kept below the aircraft's demonstrated crosswind value and below what you have recently handled. (For how to work out the crosswind component from the wind, see our separate guide on crosswind components.)
- Runway length and surface, with a margin over the book figure for a wet or contaminated runway.
- Day versus night, and familiar versus unfamiliar airfields, each with their own numbers.
- Your own currency: how recently you have flown the type, the approach, or at night.
A simple way to start is to look back over your recent flying, note the conditions you have actually flown in and were comfortable with, and set your minimums a little inside that. Then tighten them for anything you have not done lately.
A worked example
A day-VFR private pilot, current but not flying weekly, might write:
- Ceiling: 2500 feet minimum by day, 4000 feet at night.
- Visibility: 6 statute miles by day, 8 at night.
- Surface wind: 20 knots maximum, gust spread no more than 10 knots.
- Crosswind component: 12 knots maximum.
- Unfamiliar airfield: add 500 feet to the ceiling and 2 miles to the visibility.
Now suppose the forecast for the destination is a ceiling of 2200 feet and visibility 7 miles, wind 240 at 18 gusting 30. The ceiling is below the 2500 foot limit, and the gust spread of 12 knots is above the 10 knot limit. Two of the personal minimums are busted, so the answer is already decided: not today, or not to that destination, regardless of whether the conditions are technically legal.
The PAVE and IMSAFE checklists
Personal minimums are about the weather, but the weather is only one of the risks. Two well-known checklists from the FAA risk-management material round it out:
- PAVE sorts the risks into Pilot, Aircraft, enVironment, and External pressures. Your weather minimums sit under Environment, but the same disciplined thinking applies to the other three: are you fit to fly, is the aircraft up to it, and is something pushing you to go that should not be?
- IMSAFE is a fitness self-check for the pilot: Illness, Medication, Stress, Alcohol, Fatigue, Emotion. If any of these is in play, your personal minimums for that day should move tighter, not stay fixed.
The point of both is that a minimum is not a single number for all time. It is a number for this pilot on this day.
Reviewing and adjusting your minimums
A set of personal minimums is not written once and filed away. It is a living set of numbers that should move with your recent experience, and the discipline of reviewing it is as important as setting it in the first place. The risk-management material in the Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25) and the FAA Safety Team treat this as an ongoing process, not a one-off.
The clearest reason to revisit them is a change in your currency. Imagine you have not flown for three months. The legal currency may or may not have lapsed, but your handling, your scan, and your decision speed will all be rustier than they were. The sensible response is to tighten every minimum for the first few flights back: more ceiling, more visibility, less wind, more runway, daytime only, and familiar fields. As you fly and rebuild, you relax them back towards your normal set, deliberately and gradually, rather than starting again at full confidence.
Other triggers should prompt a review too:
- A change of aircraft or a new variant, where your familiarity resets.
- A new airfield or type of operation, such as your first mountain strip or your first night cross-country.
- A scare or a flight that felt beyond you, which is information about where your real limit sits.
- A long gap, illness, or a stressful period in life, all of which the IMSAFE check would flag.
A worked example: a pilot returns after three months away with a normal day ceiling minimum of 2000 feet. For the first flight they set it to 3000 feet, day only, in light winds, to a familiar field. After three uneventful flights they bring it back to 2500, and only after a handful more do they return to 2000. The number moved with the pilot, which is the whole idea.
Write the numbers down with the date, so you can see how they have changed, and treat a strong urge to shade a written minimum on a given day as a signal to look harder at the flight, not at the number.
A starter template to adapt
A template helps turn the idea into numbers. The following is a starting point for a day-VFR private pilot to adapt, not a set of values to adopt as-is, because the right figures depend on you, your aircraft, and where you fly. The structure mirrors the kind of checklist the FAA Safety Team promotes.
- Ceiling: a day value and a higher night value, each above the legal minimum for your airspace.
- Visibility: likewise, a day figure and a more generous night figure.
- Surface wind and crosswind: a maximum total wind, a maximum gust spread, and a maximum crosswind component inside the aircraft's demonstrated value.
- Runway: a minimum usable length with a margin over the book figure, and an adjustment for a wet or contaminated surface.
- Fuel: a personal landing reserve set above the legal minimum, so you plan to land with more than the law requires.
- Currency triggers: the recency below which you tighten everything, for example fewer than a set number of hours or landings in the last 90 days, or no night flying in the last few months.
Fill each line with a number you are genuinely comfortable with on an ordinary day, then write beside it how it tightens when you are out of practice or flying somewhere new. The value of the template is not the specific figures but the habit of deciding them in advance and in writing, so that on the day the question is simply whether the conditions meet your numbers.
Common pitfalls
- Not writing them down. A minimum you keep in your head is the easiest one to talk yourself past.
- Setting them once and forgetting them. Revisit the numbers as your experience grows or fades.
- Ignoring currency. If you have not flown the type or the approach lately, the day's limits should tighten.
- Letting external pressure win. A passenger, a schedule, or the cost of a cancelled trip is exactly what the written limit exists to overrule.
- Treating the legal minimum as the goal. The legal floor is where safety margin runs out, not where good planning aims.
In Pilot EFB
Pilot EFB lets you define your own thresholds for ceiling, visibility, and wind, and then flags any decoded field in a briefing that falls outside the limits you set, with a clear "below your personal minimums" badge. It is a plain comparison of the weather you are already looking at against the numbers you chose; it does not make a go or no-go decision, recommend a course of action, or replace your own judgement and the legal minima for your flight. You decide the limits, and you make the call. Briefings you have pulled stay readable offline; fetching fresh weather needs a connection. Pilot EFB is offline-first and is not a certified Electronic Flight Bag.