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  2. Radio-controlled aircraft - Wikipedia

    en.wikipedia.org/wiki/Radio-controlled_aircraft

    An RC flyer demonstrating knife edge flying. A radio-controlled aircraft (often called RC aircraft or RC plane) is a small flying machine that is radio controlled by an operator on the ground using a hand-held radio transmitter. The transmitter continuously communicates with a receiver within the craft that sends signals to servomechanisms ...

  3. Software release life cycle - Wikipedia

    en.wikipedia.org/wiki/Software_release_life_cycle

    The software release life cycle is the process of developing, testing, and distributing a software product (e.g., an operating system). It typically consists of several stages, such as pre-alpha, alpha, beta, and release candidate, before the final version, or "gold", is released to the public. An example of a basic software release life cycle.

  4. National Instant Criminal Background Check System - Wikipedia

    en.wikipedia.org/wiki/National_Instant_Criminal...

    United States portal. v. t. e. The National Instant Criminal Background Check System (NICS) is a background check system in the United States created by the Brady Handgun Violence Prevention Act of 1993 to prevent firearm sales to people prohibited under the Act. The system was launched by the Federal Bureau of Investigation (FBI) in 1998.

  5. AOL Mail

    mail.aol.com

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  6. IATA delay codes - Wikipedia

    en.wikipedia.org/wiki/IATA_delay_codes

    These codes are used to describe technical delay reasons. 41 (TD): Aircraft defects. 42 (TM): Scheduled maintenance, late release. 43 (TN): Non-scheduled maintenance, special checks and / or additional works beyond normal maintenance. 44 (TS): Spares and maintenance equipment, lack of or breakdown.

  7. Radio control - Wikipedia

    en.wikipedia.org/wiki/Radio_control

    Radio control (often abbreviated to RC) is the use of control signals transmitted by radio to remotely operate a device. Examples of simple radio control systems are garage door openers and keyless entry systems for vehicles, in which a small handheld radio transmitter unlocks or opens doors. Radio control is also used for control of model ...

  8. Radio-controlled helicopter - Wikipedia

    en.wikipedia.org/wiki/Radio-controlled_helicopter

    Learning to fly a collective pitch RC helicopter takes time and practice. Many modelers join a club so they can be instructed by experienced RC pilots, or follow on-line guides. [12] RC Helicopters usually have at least four controls: roll - cyclic pitch, elevator (fore-aft cyclic pitch), rudder (yaw) and pitch/throttle (collective pitch/power ...

  9. List of FTP server return codes - Wikipedia

    en.wikipedia.org/wiki/List_of_FTP_server_return...

    List of FTP server return codes. FTP server return codes always have three digits, and each digit has a special meaning. [1] The first digit denotes whether the response is good, bad or incomplete: Range. Purpose. 1xx. Positive Preliminary reply. The requested action is being initiated; expect another reply before proceeding with a new command.