Model Airplanes

14 CFR Title 14 of the Code of Federal Regulations

1090 ES 1090 MHz extended squitter

3D, 4D three- or four-dimensional

3G third generation

3GCN third-generation cabin network

4DT 4-Dimensional Trajectories

4096 Code combinations of four-digit tran­sponder code

A

A ampere(s)

A autotuned navaid

A-BPSK aviation binary phase shift keying

A-QPSK aeronautical quadrature phase shift keying

A-SMGCS advanced surface movement guidance and control systems

A/B autobrake

A/C aircraft

A/D analog-to-digital

A/FD Airport/Facility Directory

A/G air/ground; air to ground

A/L airline

A/L autoland

A/N alphanumeric

A/P autopilot

A/T autothrottle

A/V aircraft/vehicle

AP airframe and power plant

AAC aeronautical administration communications

AAC airline administrative communi­cations

AAIB Air Accident Investigation Branch (U.K. equivalent of NTSB)

AAF airway facilities service

AAI Airline Avionics Institute

AAIPT Aging Aircraft Enterprise Team (Naval Air Systems Command)

AAIU air accident investigation unit

AAL above aerodome level

AALC autonomous approach landing capability

AAMP advanced architecture micro­processor

AAR Automated Aerial Refueling

AATD Aviation Applied Technology Directorate (U.S. Army)

AATT advanced air transportation technology

AAS advanced automation system (FAA)

ABC automatic brightness control

ABCS Army Battle Command System

ABSAA Airborne Sense and Avoid

AC advisory circular

AC alternating current

AC2 Dolby surround

ACAA Air Carrier Association of America

ACAC air-cooled air cooler

ACAMS aircraft condition analysis man­agement system

ACARS aircraft communications addressing and reporting system

ACAS airborne collision avoidance system

ACC active clearance control

ACC airspace control center

ACC area control center

ACD automatic conflict detection

ACDO Air Carrier District Office

ACE actuator control electronics

ACE advanced certification equipment

ACG Assessment Compliance Group

ACI-NA Airport Council International – North America

ACIPS airfoil cowl ice protection system

ACF area control facility

ACK acknowledgment

ACM adjacent center metering

ACMF airplane condition monitoring function

ACMP alternating current motor pump

ACMS aircraft condition monitoring system

ACNSS advanced communication/navi­gation/ surveillance system

ACO Aircraft Certification Office (FAA)

ACP audio control panel

ACS active control system

ACS aerial common sensor

ACS audio control system

ACT active

ACTC airport traffic control

Article source: https://www.aviationtoday.com/2010/12/01/aerospace-acronym-abbreviation-guide/

Article source: https://www.bloomberg.com/news/articles/2018-05-01/boeing-to-buy-aircraft-parts-supplier-klx-in-4-25-billion-deal

5 questions about Super Bowl halftime show, from SpongeBob to shirtless Adam Levine

After months of controversy surrounding the Super Bowl halftime show, in which acts reportedly turned down the slot in solidarity with former quarterback Colin Kaepernick, Maroon 5 finally took the stage on Sunday night with Travis Scott and Big Boi. And it was . . . extremely tame.

No, Scott did not propose to Kylie Jenner, despite the very prominent rumor. Instead, he got a brief amount of time onstage, as did Big Boi, while Maroon 5 ran through their list of greatest hits: “Harder to Breathe,” “She Will Be Loved,” “This Love,” “Sugar, “Girls Like You” and “Moves Like Jagger.”

Here are five very important questions we have about the show.

1) What was up with the “SpongeBob SquarePants” cameo?

Confused about the brief “SpongeBob” scene that served as an intro into Scott’s “Sicko Mode”? You are not alone. After the show’s creator Stephen Hillenburg died last fall, mourning fans started an online campaign for “Sweet Victory,” a song from a 2001 episode about a game called the Bubble Bowl, to be played during the halftime performance.

“As a tribute to his legacy, his contributions to a generation of children, and to truly showcase the greatness of this song, we call for Sweet Victory to be performed at the Halftime Show,” reads a Change.org petition with more than a million signatures. And even though the producers just played a clip, it (kind of) worked!

2) Why was Adam Levine shirtless?

Honestly, the better

Article source: https://www.stltoday.com/news/national/your-daily-super-bowl-s-super-tame-halftime-show-rapper/collection_cf3f5f8c-fc0d-598e-86b1-63871c4523b0.html

Brian Marchal isn’t afraid of a little cold weather.

As the founder of the Chicago Polar Bear Club, he has been jumping into frigid Lake Michigan every January for more than 15 years now.

But the polar vortex that froze much of the midwest and all but shut down Chicago and other midwest cities this week was too much to handle even for Marchal – a man who had, with about 350 other Chicagoans, taken a chilly dip in the lake just a few days earlier.

“I didn’t even step outside my door yesterday,” Marchal said on Thursday, as the city’s temperatures remained well below zero. “It’s too cold for me.”

The deep freeze began Wednesday, dropping air temperatures here in Chicago to more than 20 degrees below zero and around 50 below with the withering winds. At -23F (-30.5C), the arctic chill flirted with – but didn’t quite hit – the city’s lowest recorded temperature of -27F in 1985. Still, it was undoubtedly historic, plunging the city to its fourth-lowest recorded temperatures on record, temporarily closing businesses, attractions and some services, including mail delivery, and posing a significant safety risk to people here, particularly the city’s homeless population.

But the extreme cold also immediately took its place in the history of this city, whose unforgiving winters are often regarded as rites of passage here. Chicagoans of a certain age are fond of reminiscing about the punishing weather of yore: the Article source: https://www.theguardian.com/us-news/2019/jan/31/chiberia-extreme-cold-in-chicago-inspires-solidarity-and-awe-polar-vortex