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1answer
139 views

What is an “unsafe airline”? [closed]

Question: Is there any internationally accepted definition for what an "unsafe airline" is based on objective criteria (e.g. fatalities per million passengers) ? Or is there an international standard ...
6
votes
1answer
1k views

What is the difference between redundancy and fault tolerance?

What is the difference between redundancy and fault tolerance in the context of aviation ?
0
votes
1answer
60 views

Is the National Aviation Authority the same as the Civil Aviation Authority?

Are the NAA (National aviation authority) and the CAA (Civil aviation authority) the same organisation? According Wikipedia it looks like they are the same organisation.
7
votes
2answers
353 views

What does “leave clear on its left” mean in UK regulations relating to collision avoidance on non-runway landings?

This doesn't seem to be plain English, could someone explain this with a simple example for me please? I'm not sure what 'Leave clear on it's left' means, and it's not clear whether the subject of the ...
2
votes
2answers
298 views

What is the relationship between the terms “airprox” and “near mid-air collision”?

Do the terms "Airprox" and "Near mid-air collision" mean the same? If not what is the difference between them?
3
votes
1answer
490 views

Why is the Departure leg of the traffic pattern being mistaught as Upwind?

I hear a LOT of newer pilots and CFI's erroneously referring to the Departure leg of the traffic pattern as the Upwind. Ref. A.I.M. Sec 4-3-2. Actually had a Tower controller tell me "I'll call your ...
0
votes
1answer
293 views

Is a pilot responsible for CTAF announcements in this scenario? [closed]

A Cessna 525 Citation Jet is coming in to land and a single-engine Cessna 150 is taking off at a small airport with no ATC. The Cessna 150 stays in continued radio contact and the Cessna 525 Citation ...
16
votes
1answer
5k views

What is the difference between fail-safe and fail-soft?

I have heard the following terms related to safe system design but I cannot really see a difference between fail-safe and fail-soft (graceful degradation). To get a common understanding I will just ...
3
votes
1answer
2k views

What term is the EASA equivalent of the DER in the FAA safety assurance process?

When the FAA approves a hardware or software (or mixed) system for use in an aircraft requiring Type Certification, A Designated Engineering Representative (DER) is selected to work with the ...
7
votes
3answers
7k views

If the “Fuel Shutoff Valve” is ON, wouldn't fuel be cut off?

Ok, so this may be more of an english lanugage question, and I can confirm from context that when the fuel shutoff valve is ON fuel does indeed flow to the engine, but wouldn't that just make more ...