- published: 19 Jun 2016
- views: 38575
The aircraft emergency frequency (also known as guard) is a frequency used on the aircraft band reserved for emergency communications for aircraft in distress. The frequencies are 121.5 MHz for civilian, also known as International Air Distress (IAD) or VHF Guard, and 243.0 MHz for military use, also known as Military Air Distress (MAD) or UHF Guard. Earlier emergency locator transmitters used the guard frequencies to transmit, but an additional frequency of 406 MHz is used by more modern ELTs.
The choice of 121.5 MHz was made by the ICAO in conjunction with ARINC and the ITU.
The main civil voice frequency 121.5 MHz is monitored by most air traffic control towers, FSS services, national air traffic control centers, and other flight and emergency services, as well as by many commercial aircraft.
In the UK, 121.5 MHz is monitored by the Royal Air Force Distress and Diversion cells (known as "D&D") at the London Terminal Control Centre and the Shanwick Oceanic Control, from a nationwide network of antennas. Depending on the aircraft's altitude and location, the personnel in the centres may be able to use triangulation to determine its exact position which can be useful to the pilot if the aircraft is lost or "temporarily unsure of position".
http://swaynemartin.com/ While over the Gulf of Mexico, returning from Nicaragua in a King Air F90, we heard a distress call over 121.5 from a pilot who witnessed another airplane make an emergency water landing. This is why you should ALWAYS monitor 121.5 - We then relayed information to Houston Center, which enacted search and rescue procedures. Read more about our trip on: http://www.swaynemartin.com/post-format-video/king-air-adventure-flight-alabama-to-nicaragua/ Note - This King Air recently had a tail number change to N931SB, hence the inaccurate placard in the cockpit. Thanks for watching, -Swayne Martin
I was operating on an IFR flight plan from KMLB to KTLH. I had to adjust my routing due to a presidential TFR over Orlando which increased the flight time considerably. During the flight I was monitoring 121.5 just to be safe, here is what I heard. In totally probably 5 or 6 calls to different aircraft informing them that they were violating the TFR. Check NOTAMS and TFR's before you fly guys!!!!! Even if you are IFR there are parts of the TFR that you still can't fly through. (just to clarify we were not in violation of anything, they are addressing other aircraft)
If you hear this over the radio, it's not a good day for you. A small single engine plane tried to fly towards a TFR (temporary flight restriction) over Las Vegas and was intercepted by an F-16 fighter jet. The person on the radio is the fighter pilot trying to advise the pilot he needs to land right away at Jean Airport in Jean, NV
pilots are all trolls
Why you should you monitor 121.5 Guard frquency. Uncontrolled airport communications along with traffic pattern entry are shown in this video..
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коменти от нета : Рускоговорещите сайтове цитират дословно: ..Весь наш полет до момента взрыва ракеты полностью мной контролировался. Я прекрасно видел и по карте, и на местности, где граница и где находимся мы», — сказал штурман. Много неща стават ясни от думите му! - Завалиите са нямали дори навигационен дисплей със сателитна навигация - GPS или ГЛОНАСС, на който да се вижда траекторията на самолета в реално време, както и границите. Водили са навигация като през Втората световна - чрез сравняване картата с местността! - Както и предположих вчера, руснаците нямат въздушен радар с който да контролират изпълнението на бойните полети. Никой не ги е следял, никой не ги е виждал, никой не ги е предупредил за приближаващите изтребители. - Предупрежденията са били излъчвани "ON GUARD", т.е. на ...