phpvms/app/Database/factories/AcarsFactory.php

<?php

use Faker\Generator as Faker;

$factory->define(App\Models\Acars::class, function (Faker $faker) {
    return [
        'id' => substr($faker->unique()->sha1, 0, 12),
        'pirep_id' => '',       # fill this out by
        'log' => $faker->text(200),
        'lat' => $faker->latitude,
        'lon' => $faker->longitude,
        'heading' => $faker->numberBetween(0, 359),
        'altitude' => $faker->numberBetween(20, 400),
        'vs' => $faker->numberBetween(-5000, 5000),
        'gs' => $faker->numberBetween(300, 500),
        'transponder' => $faker->numberBetween(200, 9999),
        'autopilot' => $faker->text(10),
        'fuel_flow' => $faker->randomFloat(2, 100, 1000),
        'sim_time' => $faker->dateTime('now', 'UTC'),
    ];
});