Skip to main content
26 votes
Accepted

Why are Search & Rescue aircraft looking for the OceanGate Titan submarine not visible on ADS-B Exchange?

ADS-B is line-of-sight. For an aircraft to be visible to an ADS-B receiver, it needs to be above the horizon. The wreck of the Titanic is 600 kilometers from the nearest land, so in order to be ...
Mark's user avatar
  • 5,562
23 votes

Why are Search & Rescue aircraft looking for the OceanGate Titan submarine not visible on ADS-B Exchange?

The aircraft probably do not transmit ADS-B messages, many military aircraft don't. The only way ADS-B exchange can locate these aircraft in such case is by using multilateration. Multilateration only ...
DeltaLima's user avatar
  • 83.6k
17 votes
Accepted

What can trigger the ELT on GA aircraft?

There are four different types of ELTs: Automatic fixed ELT (ELT(AF)). An automatically activated ELT which is permanently attached to an aircraft. Automatic portable ELT (ELT(AP)). An automatically ...
Aquarello's user avatar
  • 456
8 votes
Accepted

Where can I find more information about my grandfather's crashed B-18a bomber on Mt. Redoubt Alaska?

What is the terrain/glacier situation [on the southeast side of Mt Redoubt]? The southeast side is all glacier, forming in the valleys formed by previous formative eruptions, which have deepened ...
Adam Davis's user avatar
  • 2,383
6 votes

What is the optimum viewing angle to search for something on the ground from the air?

I spent an enormous amount of my childhood & early teens looking out the window of my father's Cessna 337. I found that to look as close to vertically down as possible is actually quite unnatural, ...
Mackk's user avatar
  • 1,585
6 votes

What is the optimum viewing angle to search for something on the ground from the air?

Straight Down is most likely the best angle but there is of course cases to be made for other scenarios. In your case if you are looking for something on the ground that is potentially obstructed a ...
Dave's user avatar
  • 101k
5 votes

What is the optimum viewing angle to search for something on the ground from the air?

Another consideration is to look at other aviation sources that perform search and rescue. Civil Air Patrol (CAP) for example, use aircraft routinely to search for aircraft. A quick read through their ...
Bageletas's user avatar
  • 1,932
5 votes

How to refute this geometrical method to find MH370?

The picture says that "If [the above facts are] true, the plane can only be at one of two green dot locations." However, it doesn't give any reasoning or evidence to support this claim. So, there's no ...
Tanner Swett's user avatar
  • 5,781
5 votes
Accepted

How is the search-and-rescue system for civil aviation over waters agreed and funded?

Search and Rescue is under the ICAO umbrella, but also with the IMO. Annex 12 to the Convention on International Civil Aviation gives the international standards and recommended practices (SARPS) on ...
DeltaLima's user avatar
  • 83.6k
4 votes

What would happen if the Emergency Locator Transmitter was activated wrongly?

It happens ALL the time. I have been on many airport hunts looking for the airplane with a triggered ELT. You tale a handheld radio and walk through the ramp until you find it.
user3344003's user avatar
  • 1,224
4 votes

Can you mount a net between 2 helicopters for search and rescue?

Could you? Well - technically, yes. For a little while anyway... Would you actually do it to enact effective rescue operations? No. There's countless issues with the idea that would make it rather ...
James D's user avatar
  • 228
4 votes

Are there countries where not all plane crashes are investigated (even if deadly)?

As of 2017 191 of the 193 countries are signed to the ICAO anex and there are 122 national aviation authorities so at least some countries lack serious formal aviation authority and often look to ...
Dave's user avatar
  • 101k
3 votes

What happens if I activate VFR flight plan later than filed ETD?

Assuming that you've submitted a Delay Message in order to prevent your flightplan from being deleted you have to do nothing at all. In your flightplan you only state your ETD (Expected Time of ...
pcfreakxx's user avatar
  • 1,988
2 votes

Are helicopter searchlights fixed or movable?

The question is some what unclear, but helicopters usually have some combination of 3 types of lights. Landing light(s); fixed, sometimes pulsing, used for illuminating the area directly in front of ...
wanna-beCanadianPilot's user avatar
2 votes

According to which rule, the maritime patrol aircraft are categorized?

As a military aircraft, they are regulated under FAA Chapter "get outta here, civilian, or I'll call Shore Patrol and have you arrested for trespassing". In other words, it's military, so ...
Harper - Reinstate Monica's user avatar
2 votes

How to request the programming of ICAO 24bit aircraft code into a PLB

It only takes a few seconds to convert from one format to another, so just send them the hex code and label it specifically as a hex code. (This will usually be obvious anyway, as an octal code would ...
Max R's user avatar
  • 3,808
2 votes

What can trigger the ELT on GA aircraft?

There is another way that an aircraft ELT (or for that matter, any ELT) can be set off: By a mechanical or electronic failure of the unit. This is usually caused by corrosion and is more common on ...
Aloft's user avatar
  • 21
2 votes

What happens if I activate VFR flight plan later than filed ETD?

You don't have to do anything. Your flightplan does not contain an ETA, and one is not calculated until you actually depart. You've only filed an estimated time of departure (ETD) and estimated ...
60levelchange's user avatar
2 votes

What would happen if the Emergency Locator Transmitter was activated wrongly?

The ELT guys get a lot of false alarms. About 97% of ELT alerts are false alarms. Most false alarms are generated by bad ELTs on boats. Neverthless, they chase them all down. The organization that ...
Tyler Durden's user avatar
  • 13.3k
2 votes

How to find black boxes underwater absent any pinger signals?

The CVR on a Boeing 737 is located in the aft cargo compartment. The CVR itself is not built of the same materials as the aircraft, which is mostly aluminium and composites. By mapping the location of ...
Juan Jimenez's user avatar
1 vote

Are helicopter searchlights fixed or movable?

By "searchlight" I assume you mean the high intensity units used to identify ground objects at night (example: the "NightSun" series). Those are usually fully steerable with their motion often slaved ...
user31011's user avatar
  • 854
1 vote

What makes flight recorders harder to find than tagged sharks?

Because they're located in the wreckage, which can be at great depths. The only signal that can be sent at great depths is an audio signal, and that takes a lot of power (relatively speaking, the CVR ...
tj1000's user avatar
  • 8,787

Only top scored, non community-wiki answers of a minimum length are eligible