May 15th, 2021

16:00 - 20:00 PDT
23:00 - 03:00 GMT

More than 30


200+ Flights

About CalScream

Besides being online simulation's largest fly-in event, CalScream is unique because during the event, pilots and controllers re-enact the most accurate duplication of real-world flying seen. Rather than the unrealistic sight of having 300 planes in a single-file line going to one airport, where you follow one guy in front of you for 250 miles (whom you may never see), we encourage a greater mix and spread of traffic. At CalScream, pilots fly from many medium to large airports in a smaller area, to other airports in the same area. When you fly, not only are there planes in front of you, but planes crossing right to left, above and below you - and traffic coming opposite direction. ATC will have to move you several times during your flight to miss other traffic, creating a far more realistic experience.

The best part of CalScream is that for the four hours of the fly-in, we replicate virtually every flight that originates and ends in our airspace, with realistic callsigns, routes, and departure times. We've taken all of your hard work out of it - all you need to do as a pilot is decide which of the 200+ flights available at CalScream.com that you'd like to fly and sign up for them. The data we supply contains all of the information you need to complete your flight: A route, links to charts, airspace maps, callsigns, aircraft type, and most important – your departure time. On the day of the event, with charts in hand, you'll be calling clearance delivery for pushback at the same exact time as a real-world pilot calling for his... You'll be departing at the same time as your real-world counterpart, and seeing the same traffic out the window as a real airline pilot would see. This is truly as real as it gets!

The History

From the Avsim archives dated May 2001 - the original California Screamin' is announced.

Jeff Clark, Facility Chief, Los Angeles ARTCC reminds us about the California Screamin' event which is going to be on June 10th, 2001. Jeff says:

We're attempting something not done on the SATCO network before, which is to recreate as many real world flights, using real world routes, on real world schedules, in a small area of airspace, which we think will provide a great experience for online pilots.

For those of you who don't know, Los Angeles and Oakland Centers are putting together a massive fly-in event with a difference: Instead of everyone flying into one airport in a boring single-file line, they’re duplicating real-world flights inside a compact and crowded area (California), to replicate as closely as possible, what the skies would look like at that precise time in the real world.

As you're taking off from Las Vegas on your way to San Francisco, you'll be following planes bound for different California airports. On your climb-out, you’ll see planes heading back in to Las Vegas from many other fields. There will be cross traffic off your left and right, practically everywhere you look.

Jeff continues,

The number of ATC facilities staffed will be among the highest you've ever seen on SATCO. We are planning on opening over 25 positions in our airspace to handle the anticipated crunch and make sure it all flows smoothly. This means an even more realistic experience for you, and ensures that there won’t be any logjams of planes trying to get in or out of a particular airport.

Come to the ZLA website and pick several legs to fly (most pilots are signing up for 3-4!), and feel what it’s like to have a schedule to meet, just like the big boys! If you book now, you’ll get your choice of the best (and most interesting) routes.

Previous CalScream Events

Prize Giveaway

This year CalScream is excited to offer pilots the chance to win a prize during the event Raffle! With the kind support of Aerobask and RotateSim there will be at least three (3) available prizes for this years event. Full Terms and Conditions, and Official Rules are listed below.

Promotion Description

The CalScreamin' Raffle is administered by Oakland ARTCC and Los Angeles ARTCC on Vatsim hereinafter referred to as the CalScreamin' Team. The raffle will grant three (3) lucky winners the opportunity to win prizes from event sponsors. Raffle tickets will be available virtually until May 15, 2021 (limit 2) via flight booking on calscream.com, after which the winning tickets (and winners) will be randomly selected by computer system. Participants will be asked to provide a contact email address for notification of winnings, as well as a simulator preferance (FSX, Prepar3d or X-Plane).


In order to be eligible, participants must be a Vatsim member, must complete the qualifying flight booking on the Vatsim network during the official event times and/or booking times, landing no later than 30 minutes after the event (2030 PDT, May 15th, 2021), must place the "Prize Entry ID" generated with their flight booking in the flight plan remarks, and must provide a valid contact email address and simulator preferance. To enter the raffle participants must book a flight whose origin and destination are not both within the following set of airports: San Francisco (SFO), Los Angeles (LAX), Las Vegas (LAS). For example, a flight booking from SNA to LAS is eligible, but a flight booking from SFO to LAS is not. An entry by an ineligible person is void, and cannot be a winning entry. Entries are limit two per person and are non transferable. Each participant may only win one prize.

Official Prizes

The prizes for this raffle are one (1) copy of the Aerobask Phenom 300 (provided by Aerobask), one (1) copy of the Aerobask Lancair Legacy RG (provided by Aerobask), and one (1) copy of Rotate MD-80 provided by RotateSim. The prizes have not been finalized and are subject to change.

Winner Selection

The entries to the raffle will end on May 15th, 2021 at 1600 PDT and the initial winners will be contacted within 24 hours of the scheduled event end time. The winner will be chosen at random by computer generation and will be notified by email. Winners will have 48 hours to claim their winnings by responding to the email notification before a new winner is selected.

Verification of Winners

All potential winners are subject to verification by the CalScreamin' Team, whose decisions are final and binding in all matters related to the Raffle. An entrant is not a winner, unless and until entrant’s eligibility has been verified and entrant has been notified that verification is complete. The CalScreamin' Team will not accept photographs or other evidence of winning in lieu of its validation process. Potential winners must continue to comply with all terms and conditions of these Official Rules, and winning is contingent upon fulfilling all requirements. The potential winner will be notified by the submitted email they provide when booking their flight. In the event a prize winner is disqualified for any reason, the CalScreamin' Team will award the prize to an alternate winner by random computer drawing among all remaining eligible entries. Winner must ackowledge winning by email response no later than 48 hours after notification.


Except where prohibited, participation in the Raffle constitutes winner’s consent to the CalScreamin' Team and its sponsors use of winner’s likeness, name, and/or email for promotional purposes in any media, worldwide, without further payment or consideration. The winner’s name will be announced publicly unless the winner requests in writing that they wish their name to be kept private. All participants stored email addresses will be purged from the CalScreamin' database no later than 72 hours after all prizes have been claimed.

General Conditions

The CalScreamin' Team reserves the right to cancel, suspend and/or modify the Raffle, or any part of it, if any fraud, or other factor beyond the CalScreamin' Teams reasonable control impairs the integrity or proper functioning of the Raffle, as determined by the CalScreamin' Team in its sole discretion. In such event, the CalScreamin' Team reserves the right to award the prize at random from among eligible entries received up to the time of the impairment. The CalScreamin' Team reserves the right, in its sole discretion to disqualify any individual, without compensation, it finds to be tampering with the entry process or the operation of the Raffle or any other promotion or in an unsportsmanlike or disruptive manner. Any attempt by any person to deliberately undermine the legitimate operation of the Raffle may be a violation of criminal and civil law, and, should such an attempt be made, the CalScreamin' Team reserves the right to seek damages from any such person to the fullest extent permitted by law. The CalScreamin' Team’s failure to enforce any term of these Official Rules shall not constitute a waiver of that provision.

Limitation of Liability

The Released Parties are not liable for: (1) any incorrect or inaccurate information, whether caused by entrants, printing errors, or by any of the equipment or programming associated with or utilized in the Raffle; (2) unauthorized human intervention in any part of the entry process of the Raffle; (3) technical or human error which may occur in the administration of the Raffle or the processing of entries; or (4) any injury or damage to persons or property which may be caused, directly or indirectly, in whole or in part, from entrant’s participation in the Raffle or receipt or use or misuse of any prize. If for any reason an entrant’s entry is confirmed to have been erroneously deleted, lost, or otherwise destroyed or corrupted, entrant’s sole remedy is another entry in the Raffle.


Except where prohibited, entrant agrees that: (1) any and all disputes, claims, and causes of action arising out of or connected with this Raffle or any prize awarded shall be resolved individually, without resort to any form of class action, and exclusively by a state or federal court; (2) any and all claims, judgments and awards shall be limited to actual out-of-pocket costs incurred, including costs associated with entering this Raffle, but in no event attorney’s fees; and (3) under no circumstances will entrant be permitted to obtain awards for, and entrant claims all rights to claim, indirect, punitive, incidental, and consequential damages and any other damages and any other damages, other than for actual out-of-pocket expenses, and any and all rights to have damages multiplied or otherwise increased. All issues and questions concerning the construction, validity, interpretation and enforceability of these Official Rules, or the rights and obligations of the entrant and the CalScreamin' Team in connection with the Raffle, shall be governed by, and construed in accordance with, the laws of the State of California, without giving effect to any choice of law or conflict of law rules (whether of the State of California or any other jurisdiction), which would cause the application of the laws of any jurisdiction other than the State of California.

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