There've been a lot of questions lately about tracking aircraft, and after a conversation with a friend of a friend I started wondering:
Could a PLB or EPIRB carried by a passenger or crew member aid in locating a downed or missing airliner? There are a dozen or so brands out there, most using similar technology, like this ACR ARTEX unit:
Now, I'm well aware of the FAA and FCC regulations about electronic devices in flight, and that's not what I'm interested in. I also realize that airliners already carry an ELT.
If a paranoid passenger brought one on board, would these devices function at all from inside an airliner cabin? Some feed GPS location data to a 406MHz locator beacon, and those would potentially be less useful (as they'd have to be at hand and probably triggered manually. Others, like the Spot GPS tracker, have the ability to upload GPS track data on the fly to satellite communications networks such as Iridium.
I'm personally skeptical, given that GPS generally needs a clear view of the sky and that a fuselage seems likely to block or reduce a 406Mhz ELT signal, but I'm curious to know if there's any information out there.
No, they couldn't. EPIRB beacons have a very short range, by the time you get a signal you'd also have a signal from the beacons in for example the flight data recorder.
You seem (like a lot of people) under the impression that GPS receivers send their location to the satellite which then sends it somewhere to a data center where it can be retrieved. This is incorrect. The device only reads from the satellite network, calculating its position based on signals from the satellites. And it then uses either a short range radio transmitter or a cellphone network to transmit that location to interested parties. But of course in the middle of nowhere there are no cellphone towers and a short range radio doesn't help if the nearest recipient is far away.
On a ski slope that's no problem, as you're in civilisation and not far from help. In the middle of the ocean it's of no use whatsoever.
I have a SPOT Beacon that I use for occasional adventures: mostly flying small planes and kayaking. But its small enough I generally carry it with me when I fly commercial.
Because it connects to satellites, no one needs to be nearby to "hear" it. I can press the SOS button most anyplace in the world and summon help.
There are some remote parts of the ocean where there is not good satellite coverage, (see the coverage map), but generally it may help in an emergency.
I don't know if such a device would work from inside a commercial airliner. I do know I've been able to get GPS signals by pressing a GPS receiver up against a cabin window, but it is slow to acquire the GPS lock. I don't know if it could transmit to the satellite network through the cabin window.
about electronic devices in flight, and that's not what I'm interested in. I also realize that airliners already carry an ELT. If a paranoid passenger brought one on board, would these devices function at all from inside an airliner cabin? Some feed GPS location data to a 406MHz locator beacon, and those would potentially be less useful (as they'd have to be at hand and probably triggered manually...There've been a lot of questions lately about tracking aircraft, and after a conversation with a friend of a friend I started wondering: Could a PLB or EPIRB carried by a passenger or crew member
Without getting into the mess of redesigning existing Flight Data Recorders, I have a simple proposal that I think would help in deep water crashes. I propose that several floating cushion sets... would help find water crashes sooner, but if you add a simple USB memory stick in the center, then have data similar to the current FDR's being fed into it, then finding one of the floaties would give quite a bit of information including the final GPS coordinates before the crash. These devices would be light and cheap. I'd think current planes could be retrofitted very cheaply. The only challenge
technology for maintenance data (and I think I recall hearing Boeing does too), I was wondering if either Airbus, Boeing, or the FAA, plan to facilitate or mandate that the CVR and FDR record to the cloud or a remote location either in lieu of or in addition to the physical devices installed in commercial aircraft. I would think this would be an accident investigator's dream come true... have any idea if there are plans for CVR and FDR data to be transmitted and recorded to the cloud or a remote location?
radars confirmed this weird behavior from FlightRadar24. Also A/C before and after this one did not exhibit this behavior. Does anybody have any thoughts as to what may be happening??? Why is the "skew" at seemingly same angle? Is that anything? In light of MH370, does this happen often, how reliable is that GPS data? Tail # N657UA Boeing 767-300 Typical route between EGLL and KORD Time of occurrence is approximately: 3/16/2014 6:09pm CST I have also verified FlightAware is ALSO showing the same weird glitch. See below "yellow" highlighted airplane: Same A/C from FlightRadar24
Per FAR 91.307: Unless each occupant of the aircraft is wearing an approved parachute, no pilot of a civil aircraft carrying any person (other than a crewmember) may execute any intentional maneuver that exceeds... So if I'm flying aerobatics solo, I'm not required to have a parachute. But if I have a passenger, both are required to have one. What is the rationale for that? I suppose that in something like a Super Decathlon, where the pilot must exit the plane before the passenger, it would be senseless to have one for the passenger but not the pilot. But is there anything more to this?
I'm thinking of building some of physical aspects of a flight simulator, such as the overhead panels and pedestal. Is there a publication available where I could find detailed dimensions of cockpit panel sizes of say Boeing 737 and A320s? I've found some pictures online but they don't quite have the detail I would like. Google images shows a few results with detailed dimensions, so I'm wondering where they got theirs from... actual measurements perhaps? (there are photos of measurements, but i'd like something maybe a little more exact) Is there maybe a standard size of these panels, also
anymore. There was a passenger in the back seat, fuel tanks only half full so the CG was more aft than usual, but well within limits Ever since that flight I've wondered: What could cause this to happen? (My guess is it is CG related) And most importantly: If I would have continued this "mushing" flight, would it be possible to have entered a flat spin or a simple "drop out of the sky...When I took delivery of a new Cessna 182T last year, I did a test flight for certification purposes. During the test flight we had to perform a power off stall but that didn't go as planned
Please note that I'm not asking about getting a certificate good enough for flying a wide-body passenger jet (see related question). Rather, I'm asking about getting from zero flying experience to an actual pilot/co-pilot job at a major US airline (AA/Delta/UA/Southwest). Perhaps some regulatory organization maintains such a statistics? Or even the airlines themselves? I'm well aware that people can have various career paths (from ex-military pilots to guys who paid for 10000 flights hours out of their pockets), but with 40,000+ pilots employed by major airlines there must
After answering this question on History.SE, I started to wonder if it would be possible to find out even more detail about the plane now that its serial number is known. I have no idea what kind of flight records the US Army Air Corps kept, however. I know most flight logs today are kept by pilot, but I imagine there would be some way to trace what pilots flew a particular plane. I have no idea if this is possible for USAAC trainer planes in the 1930s. Could I get access to these records? If so, how would I go about it? I'm mostly interested in seeing if I can find out more information
in the water, the radar could pick it up. They [flight recorders] typically have a radio beacon and so for example our P3 [radar] - if they are flying within a certain range of that - will pick up that radio beacon. We have not yet picked up anything, but that's typically what those black boxes contain." I was under the (potentially incorrect) impression that flight recorders, by nature of the materials needed to protect their contents in the event of a crash, are quite dense and unable to float in water. I base this impression on news reporting of other airliner crashes (such as Air France