Flying Days And Training Tempo
Across the twelve months ending 1 August 2026, NOAA ASOS observations at Van Nuys recorded 355 days on which four or more daylight hours held a ceiling at 3,000 feet or better with five statute miles or better of visibility. This page asks the question a student actually has: how many lessons does that cost you, and which ones?
How Much Flight Training Does Weather Actually Cost You Here?
About ten days out of 365, and not the ten you would guess. NOAA ASOS observations for the twelve months ending 1 August 2026 counted 355 days at Van Nuys on which four daylight hours or more cleared a ceiling at 3,000 feet with five statute miles of visibility. That leaves ten days in the year on which a training slot could not have been flown at any hour.
The threshold matters more than the headline. Basic VFR, meaning a thousand feet and three statute miles, was met on 363 of those days, so eight days separate legally flyable from usefully trainable. That gap is the honest part of the measurement: a 1,200-foot ceiling is perfectly legal and no use at all for a lesson on steep turns.
Turn the annual figure into a schedule and it stops sounding like marketing. A student flying five days a week books roughly 260 slots in a year and a ten-day loss spread across the calendar costs about seven of them. A student flying twice a week books around 104 and loses about three. Neither number is what stretches a private certificate into a second year.
Which Lessons Get Cancelled, And When?
Early-morning slots in late spring and early summer, and almost nothing else. Marine air moves inland overnight and burns off through the morning, which makes the loss a property of the clock rather than of the calendar.
The June Morning, Hour By Hour
June is the worst month for this and its shape is instructive. Of the 7am observations that month, 40 per cent met training minima. By 11am the same month it had climbed to 93 per cent, and from 1pm onward it ran between 97 and 100 per cent.
For a student that is not a warning about June. It is an instruction about scheduling. A 7am lesson in June is a coin toss and a 1pm lesson in June is close to certain, and the difference between those two bookings is larger than the difference between any two months of the year.
- 7am in June: 40 per cent of observations met training minima
- 11am in June: 93 per cent
- 1pm onward in June: 97 to 100 per cent
- The variable is the hour, not the month
August, And Why The Field Matters
At 7am in August, Van Nuys met training minima on 84 per cent of observations. Santa Monica, ten miles closer to the water, managed 48 per cent in the same hour of the same month.
That is the single most useful comparison in this dataset, because it shows how local the effect is. Two fields in the same basin, in the same month, at the same hour, differ by thirty-six percentage points. Choosing an airport further from the coastline is a bigger lever on morning availability than choosing a season.
What This Measurement Does Not Capture
Three things, stated plainly, because a study that publishes only its strengths is an advertisement. Automated surface observations are known to misread thin or broken layers, so a small number of days fall in the wrong column in both directions. Wind is not modelled at all, and a gusty crosswind day can be entirely legal and entirely unsuitable for a student approaching a first solo. And a day that qualifies as capable is not a day on which every lesson could have been flown, because an instrument student wants cloud and there is very little of it here.
That last one is a genuine downside of training in Southern California and it is dealt with on the instrument training and actual IMC page rather than glossed over on this one.
Why Does The Hour Matter More Than The Month?
Because the mechanism is marine air, and marine air runs on a daily cycle rather than a seasonal one. Cool, moist air pushes inland overnight, sits as a low deck at dawn, and lifts and scatters as the ground warms. That is why a June morning and a June afternoon at the same airfield behave like two different climates.
The practical consequence for a student is that a booking habit is worth more than a season. If your life allows a midday slot, weather is very nearly a non-issue at this field. If the only hour you can fly is 7am in June, you should expect to lose some of them and you should build that into the plan rather than being annoyed by it each time.
Van Nuys sits inland, which is the reason the effect is milder here than at a coastal field. That is a property of the airport rather than an achievement of ours, and it is measurable, which is why this page publishes it as a number instead of an adjective.
What Does The Tempo Actually Buy You?
Fewer total hours for the same certificate. Nothing in a syllabus is priced by the calendar, but a student flying four times a week relearns less between lessons than a student flying once a fortnight, and relearning is the single largest source of hours above the regulatory minimum.
Airline Career Track
Every phase from a first logged hour to a flight instructor rating, priced once and held at the figure you enrolled on. Tempo matters more here than on any other product, because five phases compound.
- ✓Five phases under a single number
- ✓Financing from $2,500 down
- ✓Nothing repriced at a phase boundary
- ✓Part 61 from the first hour to the last
Private Pilot — Comprehensive
Sixty hours in the logbook, fifty flown dual, five in the box and ten hours of ground school beside them.
- ✓60 hours logged
- ✓50 hours flown dual
- ✓5 simulator sessions
- ✓Every book and training material included
Private Pilot — Standard
Forty hours logged and thirty flown dual. It is the better value of the two for a student who can genuinely fly several times a week, and the worse one for a student who cannot.
- ✓40 hours logged
- ✓30 hours flown dual
- ✓2 simulator sessions
- ✓Every book and training material included
Instrument Rating
The phase most sensitive to gaps between lessons, because an instrument scan decays faster than almost any other skill on the ladder.
- ✓Taught by a CFII
- ✓Priced as a rating rather than a block of hours
- ✓Fixed at enrolment
What Happens On One Of The Ten Days?
Something else gets used, or the slot moves. Neither of the options below is a substitute for flying, and pretending otherwise is how a school protects its own calendar at your expense.
Redbird MCX Session
The full-motion device on the field, which no ceiling has ever cancelled. A good replacement for procedural work and a poor one for anything involving handling.
- ✓Never lost to weather
- ✓Strong on flows, checklists and instrument scan
- ✓Weak on landings, and we say so
Assessment Flight
For anybody who has not started yet, the sensible first booking is a midday slot rather than a dawn one. On this field the hour you choose matters more than the month.
- ✓Loggable dual instruction
- ✓You fly it yourself for the greater part of the hour
- ✓Credited in full against a program enrolled on inside a day
Ground School Hours
Inside the Comprehensive program sit ten hours of ground instruction, and a closed morning is the natural time to spend one of them rather than losing the slot entirely.
- ✓10 hours of ground inside the Comprehensive
- ✓3 hours inside the Standard and the Premium
- ✓Not the same thing as simulator sessions
How Does This Field Compare With Other Training Airports?
Eight comparator airports measured on identical thresholds across the same twelve months. The interesting part is not that Van Nuys is high; it is how wide the spread is, and what a 277-day field does to a timeline.
The Southern California Group
Close together on a map and further apart than you would expect on the numbers. Proximity to the coast is doing most of the work here.
- Van Nuys355 days
- Burbank356 days
- Santa Monica343 days
- Whiteman334 days
- Torrance332 days
The National Comparators
Two dry-climate fields and two in the Pacific Northwest, measured on the same thresholds. The spread across the country is roughly eighty days.
- Phoenix Deer Valley356 days
- Kissimmee, Florida355 days
- Everett, Washington278 days
- Hillsboro, Oregon277 days
What The Spread Is Worth
Convert it into lessons rather than days. A full-time student booking five slots a week loses about seven a year here and about fifty-five at a 277-day field, which is most of a phase.
- At 355 DaysAbout 7 slots lost from 260
- At 277 DaysAbout 55 slots lost from 260
- DifferenceRoughly two months
- BasisArithmetic on the figures above
How Should You Book Around This?
Four habits that between them cost nothing and recover more slots than the weather takes. None of this is a secret; it is simply the part nobody writes down.
Take The Middle Of The Day Between April And July
The measurement says a 7am June slot is a coin toss and a 1pm June slot is very nearly certain. If your calendar allows either, this single choice is worth more than every other item on this list combined.
Book The Next Lesson Before You Leave
The scarce resource at a field with 355 usable days is not sky, it is a slot with your instructor and an available airplane in it. Booking two lessons ahead is what converts good weather into actual progress.
Keep A Standing Slot Rather Than Rebooking Weekly
A recurring booking survives a busy week in a way an ad hoc one does not. Students who fly on a fixed rhythm finish nearer the minimum hours, and the mechanism is relearning rather than talent.
Decide In Advance What A Weather Day Becomes
Agree with your instructor now whether a closed morning turns into a device session, a ground hour or a reschedule. Deciding it on the day, in a hurry, is how a lesson becomes a substitute that taught you nothing.
Why Do Two Nearby Airports Differ By Thirty-Six Points?
Because distance from the water is the dominant variable in this basin, and ten miles is a long way in that particular argument. At 7am in August, Van Nuys met training minima on 84 per cent of observations while Santa Monica managed 48 per cent, and the two fields share a month, an hour and a weather system.
The practical reading is that a national statistic about Los Angeles weather tells you almost nothing about a specific flight school’s availability. The number that matters is the one measured at the field you would actually be flying from, which is why this page measures one field rather than a region.
It also means the comparison cuts both ways honestly. Burbank recorded 356 days on the same thresholds, a day better than this field. We are publishing that rather than leaving it out, because a study that only produces flattering comparisons is not a study.
What This Number Does Not Tell You
Five limitations, published beside the figure rather than buried under it. A measurement without its caveats is a marketing claim wearing a lab coat.
Thin Layers Are Misread
Automated surface observations are known to report thin or broken cloud imperfectly. A small number of days therefore sit in the wrong column, in both directions, and nothing in this method corrects for that.
Wind Is Not Modelled At All
A day can clear every ceiling and visibility threshold used here and still be entirely unsuitable for a student on a gusty crosswind. Wind was not part of the test, and that is a real gap rather than a technicality.
A Qualifying Day Is Not Every Hour
The rule required four qualifying daylight hours, not a whole day. A day counted here may still have been closed at the exact hour you had booked, which is why the June morning figures are published separately.
Instrument Students Want The Opposite
The same climate that produces 355 usable days produces very little actual instrument weather. That is good for tempo and poor for logging time in cloud, and it is a genuine cost of training here.
Not Yet A Full Matrix
June and August have been worked through hour by hour. The remaining months exist in the source data and will be published here rather than approximated in the meantime.
It Is A Count, Not A Forecast
This describes twelve months that have already happened at one airport. It is not a prediction about your particular year and it is not a promise about your schedule.
How Was The 355 Figure Produced?
By counting hourly surface observations against a fixed pair of thresholds and requiring a minimum number of qualifying daylight hours in a day. There is no modelling in it and no forecast, and the raw data is a public archive anybody may pull for themselves.
The source is the Automated Surface Observing System at Van Nuys, retrieved through the Iowa Environmental Mesonet, across the twelve months ending 1 August 2026. Each hourly observation was tested against a ceiling at 3,000 feet and visibility at five statute miles. A day counted only where four daylight hours or more passed that test, because one clear hour in the middle of an otherwise closed day is not a training day.
A second column was counted at basic VFR, a thousand feet and three statute miles, and produced 363 days. Publishing both is deliberate: the difference between the two columns is the part of the year that is legal to fly in and unhelpful to learn in, and a study reporting only the higher number would be measuring the wrong thing. The same procedure was then run at fifteen Southern California airports, which is where the comparator figures come from.
What Can A Stranger Verify About This Analysis?
The dataset is public, free and citable, which is the entire reason this page exists in this form. Anybody with a browser can rebuild the count from the same source and check us on it.
Training-Capable Days, Twelve Months To 1 August 2026
Counted from NOAA Automated Surface Observing System reports retrieved through the Iowa Environmental Mesonet. A day was admitted only where four or more daylight hours held a ceiling at or above 3,000 feet with visibility at or above five statute miles.
NOAA ASOS via the Iowa Environmental MesonetDays Clearing Basic VFR On The Same Data
A thousand feet and three statute miles, counted from the identical archive over the identical period. Published beside the stricter figure so that the gap between legal and useful is visible rather than hidden.
NOAA ASOS via the Iowa Environmental MesonetAirports Measured On Identical Thresholds
The same procedure, the same period and the same qualifying-hour rule were applied across fifteen Southern California fields, which is where every comparator figure on this page comes from.
Method published above, in fullAirframe Types Available On Those Days
Usable weather is worth nothing without an airplane in it. The fleet is owned rather than brokered, which is what decides whether a serviceable airframe is actually free on a good morning.
Inspected under 14 CFR 91.409(b)Instructors Available On Those Days
The other half of the same point. Depth of staff is why 355 usable days can become 355 bookable days rather than a number that looks good on a page and never reaches your logbook.
14 CFR 61.183 · 61.23If Weather Is Not The Problem, What Is?
Gaps between lessons, and the relearning they force. Every hour above the regulatory minimum has a cause, and at a field with 355 usable days that cause is almost never the sky. This is the position this page exists to argue.
The mechanism is not mysterious. A skill practised on Tuesday and again on Thursday needs almost no reintroduction. The same skill practised on Tuesday and again three weeks later needs fifteen minutes of the next lesson before any new ground is covered, and that fifteen minutes is charged at the same rate as everything else.
Multiply it across a certificate and the arithmetic is uncomfortable. A student flying fortnightly can spend a substantial share of every lesson recovering ground they had already paid for once. That is the actual reason a private certificate can take two years here, and weather contributes almost nothing to it.
Which is why the useful question to ask yourself before enrolling anywhere is not about climate. It is the number of hours in a week you can genuinely attend, counted honestly rather than optimistically, and whether the school can supply an instructor and an airframe at those hours. Both halves of that have to be true.
Fly Five Days A Week, Or Two?
The measurement above says the sky permits either. What differs is total hours, elapsed time and how much of each lesson is spent recovering ground. Neither column is wrong, and one of them is considerably cheaper per certificate.
Four Or Five Lessons A Week
A compressed rhythm, where each lesson starts near where the last one finished and very little is relearned.
Best forsomebody who can genuinely clear their calendar, not somebody who intends to
- Slots Booked In A YearAbout 260
- Slots Lost To Weather HereAbout 7
- Relearning Per LessonMinimal
- Elapsed Time To A CertificateMonths
Two Lessons A Week
The rhythm most people actually manage alongside a job, and a defensible one provided it stays a rhythm rather than becoming occasional.
Best fora student in full-time work who can hold a standing slot
- Slots Booked In A YearAbout 104
- Slots Lost To Weather HereAbout 3
- Relearning Per LessonNoticeable
- Elapsed Time To A CertificateLonger, and predictable
Side By Side
| Five A Week | Two A Week | |
|---|---|---|
| Slots Available In A Year | About 260 | About 104 |
| Lost To Weather At This Field | About 7 | About 3 |
| Lost To Weather At A 277-day Field | About 55 | About 22 |
| Program Price | Unchanged | Unchanged |
| Main Source Of Extra Hours | Very little | Relearning between lessons |
What Does One Cancelled Lesson Actually Cost You?
More than the hour, and less than people fear. A single cancellation moves your next lesson a few days later, which adds a small amount of relearning to it. One of those is noise. A pattern of them is what turns a syllabus into a plateau, and a plateau is expensive in a way that a cancellation is not.
This is why the ten-day figure is worth putting in context rather than celebrating. Ten lost days spread evenly across a year is genuinely trivial. Ten lost days concentrated into the fortnight you had blocked out for a compressed phase is not trivial at all, and the sensible response is to build a little slack into any compressed plan rather than to assume the average.
The fixed program price is the other half of the protection. Because your figure is set at enrolment, a slow month is a scheduling problem rather than an invoice, and nobody here benefits from a syllabus that drifts. That is a deliberate design decision and it is the honest answer to the risk this page has been describing.
What This Measurement Is Not
It is a count of surface observations at one airport against two stated thresholds, and it is not a forecast, a guarantee or a promise about your schedule. Automated observations misread thin layers, wind is not modelled anywhere in it, and a day that qualifies is not a day on which every lesson could have been flown. No claim is made here about days of sunshine, and no figure other than 355 is used anywhere on this site for training-capable days.
Airline Pilot Flight School trains under part 61 of 14 CFR, at Van Nuys Airport. It is not an airline, it is not owned by one, and no carrier holds a cadet program, pathway agreement or hiring arrangement with it. Nothing on this page offers you an interview, a job or a salary, and no carrier is named anywhere on this site.
No pass rate, no graduate count and no rating of any kind is published here. Any such figure would come from a sample too small to carry meaning, and inventing one is the easiest lie available in this industry. What gets published instead is the syllabus, the price, the hours and the method behind every number stated above.
What People Ask About Flying Days
355 of them cleared the training threshold used here across the twelve months ending 1 August 2026, counted from NOAA ASOS observations: four daylight hours or more at a ceiling of 3,000 feet with five statute miles of visibility. At basic VFR, a thousand feet and three statute miles, the count was 363.
About seven a year if you fly five days a week, and about three if you fly twice a week. That is straightforward arithmetic on ten non-qualifying days spread across 365, and it is far smaller than most people expect. Scheduling and aircraft availability cost a student many more slots than weather does here.
Early morning, in late spring and early summer. In June, 40 per cent of 7am observations met training minima, against 93 per cent at 11am and between 97 and 100 per cent from 1pm onward. Moving a June booking from 7am to 1pm changes it from a coin toss into a near certainty.
It is a real problem for morning slots in specific months and almost nothing outside that. The effect is also intensely local: at 7am in August, 84 per cent of observations at Van Nuys met training minima while Santa Monica, ten miles nearer the coast, managed 48 per cent in the same hour.
Burbank recorded 356 days and Phoenix Deer Valley 356 on identical thresholds, with Kissimmee at 355. Santa Monica reached 343, Whiteman 334 and Torrance 332. Everett in Washington recorded 278 and Hillsboro in Oregon 277, a difference of roughly eighty days a year against this field.
From Automated Surface Observing System reports at Van Nuys, retrieved through the Iowa Environmental Mesonet, for the twelve months ending 1 August 2026. Every hourly observation was tested against a ceiling at 3,000 feet and visibility at five statute miles, and a day was admitted only where four daylight hours or more passed. The archive is public and the count is reproducible.
Indirectly, and the mechanism is relearning rather than the weather itself. A student flying four times a week spends less of each lesson recovering ground than one flying fortnightly, and that recovered time is the biggest single source of hours above the regulatory minimum. Tempo is the lever; weather is what makes tempo possible.
No, and that is the honest cost of the same climate that produces 355 training days. Southern California gives an instrument student very little actual cloud, which is good for tempo and poor for logging actual instrument conditions. The instrument training and actual IMC page deals with that properly rather than glossing it.
Three main ones, all published. Automated observations are known to misread thin or broken cloud layers. Wind is not modelled at all, so a legal but gusty day can still be unsuitable for a student. And a qualifying day is not one on which every possible lesson could have been flown, since different exercises want different conditions.
Rarely at this field, and when it happens the usual substitute is a simulator session, which no ceiling has ever cancelled. A session costs $189 standalone and several are already included inside the private pilot programs. It is a good substitute for procedural work and a poor one for handling, and your instructor should say which your lesson was.
Afternoon, if your calendar allows it and you are training between April and July. Outside those months the difference is small. The figures above make this the single cheapest scheduling decision available to a student at this field, because it costs nothing and recovers most of what weather takes.
Keep Reading
What You Can Check
Our Fleet At Van Nuys AirportOur Instructors And Their CertificatesFull-Motion Simulator TrainingPart 61 Training StructureTen Days A Year Are Lost To Weather; The Rest Go To Scheduling
The measurement says the sky is available. Whether you use it is a question about your calendar, your instructor’s and the airplane’s. Start with one hour, take a midday slot, and find out what a real training tempo would look like for you.
Fly The Aeroplane Once, Then Decide
The assessment flight is the first hour of the syllabus and a two-way evaluation. You fly it from the left seat with an instructor beside you, they write down what they saw, and you get an honest read on whether the plan is realistic. It is loggable, and it is credited in full against enrolment if you enroll within 24 hours.
What happens on an assessment flight →