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February Deadline For Emergency Beacons Approaches
An anonymous reader writes "In two weeks, older emergency locator beacons will no longer be monitored by satellites. USA Today noticed that 85% of private aircraft in the US have not switched to the 406 MHz beacons. I thought I'd send up a flare about this. And this should not be relevant to the airplane which landed in the Hudson River today, as that was a commercial plane and its location was known by a number of bystanders, one of whom helped crash TwitPic."
I've re-checked and it's all there.
Right between the emergency eggs and the emergency beer.
Thankfully, due to timezones, yesterday can be today, today can be tomorrow. Possibly (although I'm not sure) tomorrow can also be yesterday. This is also the case when abusing drugs, which is not surprising, considering that the guy who invented timezones was probably doing said abuse.
Actually, it is a big deal. How would you like to go buy your new car and after you get home find out that you needed to spend an additional 5-10% for no reason. The ELTs that we currently have on our aircraft work just fine. Having the satellites stop listening is the problem. The question is why? It's a software issue, nothing more, so why change it? Those satellites are sophisticated enough to listen to both frequencies and alert the appropraite personell when they detect the signal. It makes absolutely no sense why they would discontinue monitoring this important safety device. So what if it is not as accurate as the newer technology, that's a choice we make as owners. I don't fly in remote areas... in fact, most of my flights are withing 200 miles of Cincinnati, so if I go down, I'm within a few miles of a population center. CAP can use their ELT Locators to find me.
We don't need an additional "TAX." In the aviation world, we already pay through the nose for regulations and adding more is just complicating the burden. Once the price of the 406mhz units gets down to around the price of the 121.5mhz units, then the problem goes away. Right now, they cost 12x as much!
Bill
It's my Sig and you can't have it. Mine! All Mine!
Yes, the existing ELT (Emergency Location Transmitter) beacons are no longer monitored by satellite. That does not mean they become useless. They broacast an audio tone on a radio frequency all civil and military aircraft can tune to.
Many pilots fly with their second radio continually tuned to this frequency, and I have been on flights in a general aviation flight where we have picked up beacons and reported them to ATC. More often than not, it's a hard landing that trips the beacon and the aircraft is parked on the ramp.
Finally, when your aircraft does go missing, these beacons are deliberately tuned by authorities doing search and rescue work, such as the Civil Air Patrol. Aircraft listen for and locate the general location of the beacon, and ground personnel locate the beacon with good directional antennas.
The (relatively) recent Fossett crash is a prime example of this -- His aircraft was not equipped with a ELT beacon at all (in violation of law) and had he been ELT equipped, he would have been found within a day.
The big thing that changes here is that, with the sattelites no longer monitoring, ATC will not get an automatic alert when a beacon turns on. This tech is spotty at best, however, and of course, 90% of ELT activations are false alarms anyways.
The new 406 Mhz beacons include a GPS reciever and actively transmit their location, such that rescue units simply get a waypoint on their GPS where the transmitter is downed. They are a far better technology, but the existing system does work well.
Overall, more hype than needed.
First, it is important to remember, only satellite monitoring for 121.5 ELT is stopping. Ground and air based monitoring is still ongoing. Secondly, CAP (Civil Air Patrol; Axillary Air Force) does not have equipment to track 406. Keep in mind, CAP performs the bulk of the required search and rescue operations in the US. All 406s I'm aware of have a dual mode of 121.5/406. This means it's more likely you'll actually be located by rescue crews using 121.5.
The problem is, because of the FAA, there is no competition. This means purchase plus install for a really nice 406 unit can cost in excess of $5000 for a $200-$400 ELT. Now that lower priced units, and units which are compatible with existing installs are finally starting to come onto the market you'll start to see increase in the number of installations. Yet the bulk of these installs will likely occur either during an aircraft's annual or when the existing ELT's battery requires replacement. The combination of the two means installs should start to increase sometime over the next 24-months.
In the meantime, many have elected to go with much cheaper solutions. Personal Locater Beacons (PLBs) and SPOT are very popular with pilots because they can be had at a fraction of the cost despite their reduced sized and increased capabilities.
The big advantage of the 406 ELT is the specification allows for a data component. Specifically, it allows an aircraft's GPS to continuously update the ELT with its current location. In the event of an emergency, the ELT can be manually armed or be set off from excessive G's (impact). Once set off, the ELT immediately transmits the last known location received from the GPS. This allows for very high accuracy position reporting. Of course the problem is, pilots want this capability and most existing manufacturers are attempting to rape owners.
Right now, Artex's ME406 is about the only reasonably priced unit available and it hasn't been on the market all that long.
Lastly, let's not forget satellite monitoring of 121.5 is really pretty crappy. Your typical detection window requires three satellites to pass overhead, ignoring the fact it can technically be done in two. The detection capabilities of the existing satellites are pretty crappy. And if one of the Russian satellites are in the mix, you may even require four satellite passes overhead before anyone is dispatched. This means you're looking at anywhere from 10-36 hours before someone picks up the phone to get people looking for you - unless you filed an optional flight plan. In the end, loss of satellite detection for 121.5, while certainly not good, is not really a nightmare scenario.
In the end, the best thing to do is to simply let someone know when you're flying, where you're going, the route you're taking, and the time you expect to arrive. Ideally, this is someone at your destination. And should you not show or be heard from, teach them to call the FAA or an official briefing station. At that time, they can immediately dispatch a search effort. Meaning, for many pilots, this is actually a better plan than filing a flight plan with the FAA. Routes which are not direct or too complicated to convey to laymen should be filed via flight plan.
And for those interested, here is a comparison of existing, alternative tracking solutions.
It makes absolutely no sense why they would discontinue monitoring this important safety device
The page linked in the article quotes a 99.8% false positive rate for satellite detections of these beacons. I.e. they run around trying to find the crashed plane, and 499 times out of 500 it's a faulty electrical appliance or something that is giving off interference (or someone activated the beacon by mistake - unfortunately they don't break down the figures further). 1 time out of 500 it's a real rescue situation.
That seems like a valid reason to say "please upgrade to new beacons that don't suffer from this interference, and which identify you so we can give you a quick phone call to see if you accidentally activated the beacon".
I can see why you're upset though - it's never nice to be told you have to spend that much cash.
When you've had your plane for a decade, and it's all paid for, do you really want to spend $1200 (and our flying club was quoted more like $2500 installed) at a time when avgas is still at near record highs
Perhaps the government could pitch in $40 towards a converter box that makes the old beacons compatible with the new system, but doesn't function nearly as well as purchasing a whole new beacon. This $40 will be in the form of a coupon that can only be used to buy the converter box, and it can't be used towards the purchase of a new, and functionally superior, system.
Of course these coupons will become very popular as many people have old beacons that work just fine and can't justify the cost of a new one. The government will underestimate the demand for the coupons and run out of money for the program.
One of our competitors trademarked the term "hypothesis". From now on, we will call them "boneheaded ideas".
What makes them so different to normal consumer ones?
They're a permanently mounted part of the plane, and therefore they have to be certified to the same standard as anything else mounted in the plane. In the case of the ones we mounted (Garmin 530), they also replace one of the communications radios and one of the navigation (VOR, LOC and ILS) radios, so they have to be certified to that standard as well. And then on top of that you have to load in a new database every 56 days or the unit will refuse to let you use it for instrument approaches.
Consider also the consequences of getting it wrong. If your TomTom is off by 100 metres, you park in front of the wrong house. If my Garmin 530 is off by 100 metres, I crash into a mountain side and die.
The next Cmdr Taco duplicate will be ready soon, but subscribers can beat the rush and see it early!
Those "false positives" are triggered because detection equipment is simply listening for anything broadcasting on 121.5mhz. If you actually listen to the signal, you can quite easily tell if it is a real signal or not becuase aircraft ELTs make a unique repeating tone, microwaves or other electronic devices do not.
Accidental triggers do happen, for example, from "aggressive" landings by student pilots, but they are not all that common. If one is triggered, they don't "run around trying to find the crashed plane" unless they actually can hear the correct signal. If they do, they will usually figure it out pretty quickly and turn if off. In all my years of flying, I've only seen two situations where CAP came looking for a triggered ELT, and both were at the local airport where someone accidently set their unit off. These occurance of these types of incidents would not change if they switched to the new units, because they'd still get set off and someone would still have to come check it out. It's would just make identification easier.
BTW, In our planes, we check our ELTs once a month to determine if they are in working order. We do this by triggering the ELT at the top of the hour (first five minutes) for no more than 3 tone cycles. We listen on our radio for the alert signal. If we hear it, we immediatly turn off the ELT test and set it back to it's normal "colision detection mode" which is triggered by a rapid deceleration event (aka crash.)
Bill
It's my Sig and you can't have it. Mine! All Mine!
Really? Crowded skys? When I'm flying, I only see other aircraft at or near airports. Most of the time, it's me and the wild blue yonder. As for the cost, I fly a Beechcraft Skipper. The plane cost less than my pickup truck, and my truck is a basic GMC model, not a fancy one. My plane get's better fuel mileage than my truck and can get me any place faster. You need to really look into general aviation to understand that it isn't a rich persons hobby, it's everybody's hobby. You can easily buy a plane for under $20,000. In fact, my last plane was a Cessna 150 which I bought for $14,000. Flying is only expensive if you make it expensive.
Bill
It's my Sig and you can't have it. Mine! All Mine!
Actually, I'm one of those volunteers who look for the emergency beacons when they go off(Civil Air Patrol) right now 100% of my 40 or so finds are false positives. Of those, 1 was a boat EPIRB in a storage warehouse, 1 was a broken FAA transmitter and all the rest were actual aircraft ELTs. Of those, probably 30 were on airports in aircraft which had not crashed. Some were hard landings, some were a mechanic accidentally hitting the switch, some were just going off because the contacts shorted out due to moisture. A couple others people had taken home or were in salvage yards. In most cases a 406 would have let someone call the owner directly and tell them to drive to the airport and turn off their beacon. For the remaining 121.5MHz beacons my life will be much more difficult, right now satellites get us usually within 10 miles or so. Without that, an airliner at 10-30k feet reporting an ELT will give us a HUGE area to search, and if we can't launch planes due to weather it's going to take us a very long time to find the source. In addition, if multiples are going off in an area, we may locate the one at the airport and not know until it's turned off that there was a second real crash somewhere else when we get another report of an ELT still going off. So, please upgrade if you can, and especially if you're going to be away from civilization.