Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [engine-failure]

An engine failure occurs when one or more engines on an aircraft stop functioning normally. This is often assumed to mean a complete loss of power from the engine, but partial power loss and excess power are also engine failures.

1
vote
2answers
186 views

Why aren’t multiengine general-aviation aircraft required to be capable of sustained single-engine flight?

While perusing the See How it Flies website, I came across this alarming statement regarding multiengine general-aviation aircraft: You must not allow yourself to think that just because airliners ...
2
votes
1answer
122 views

Why is there a minimum altitude for at least some high-speed jet engine restarts?

While reading this other question about envelope constraints for jet-engine restarts, I noticed something odd in the graph provided (of the relight envelope for the Honeywell HTF7000 medium-bypass ...
1
vote
1answer
88 views

How can you calculate the vertical speed of an helicopter during auto-rotation?

How can I calculate velocity of a helicopter when it falls with autorotation when the engine fails, given all the parameters such as mass , height , wing size etc.
17
votes
4answers
3k views

Why do uncontained engine failures still occur?

One of the absolute requirements of an aircraft turbine engine (usually some sort of turbofan or turboprop) installation is that, in the event of a destructive failure of the engine, the engine ...
2
votes
1answer
176 views

In a Practice Forced Landing (PFL), what are Low Key and High Key and how are their locations determined?

Please explain what are "low key" and "high key" in practice forced landings? Are they any particular locations with respect to the airfield? Are they the same for every aircraft? Will they change ...
3
votes
2answers
201 views

Could compressor stalls be caused by air in supercritical conditions?

It is likely that in compressors of jet engines appear conditions that cause the intaken air to become supercritical, cf Is the air in a jet engine supercritical? . Is it possible that ...
32
votes
7answers
9k views

Have there been any incidents caused by an inability to shut down an engine?

I read many items on the avherald.com site where it says "engine shut down during flight" or words to similar effect. I'm wondering if there are any instances where an engine could not be shut down ...
17
votes
10answers
8k views

Why are all engines identical in typical commercial airplanes?

I come from the IT world where redundancy is in place to cover several cases, among other: a statistical failure of a device (so we use more of them expecting that the event is independent) a rogue ...
3
votes
1answer
316 views

Why does the A320 right aileron float on dual engine failure?

On this question for the A320 after dual engine failure it says: When the hydraulic power is lost, the right aileron is lost, and is in the upfloat position. Why would this affect only the right ...
1
vote
1answer
368 views

What is the relationship between EGT, Fuel Flow, N1, N2 and Air Temperature?

I initially wanted some sample data for EGT, Fuel Flow, N1 and N2 to build a prognosis system that predicts engine failure (ECTM). I searched for some sample data online but got to know that there's ...
3
votes
1answer
137 views

Where can I find sample data required for Engine Condition Monitoring? [closed]

I'm trying to find some sample data required for Engine Condition Trend Monitoring to analyse and predict when an engine might fail. I went through a lot of research papers and (kind of) understood ...
2
votes
2answers
527 views

Can current fighter jets perform a deadstick landing?

If a current modern day fighter were to have a total engine failure over a suitable landing site or airport, can the pilot safely perform a dead stick landing? If so, are they routinely given training ...
4
votes
1answer
701 views

What is the A320's procedure for dual engine failure at very low altitude?

What is the procedure for a dual engine failure in an Airbus A320 (perhaps a large bird strike, since these engines only tolerate medium birds) at a very low altitude, shortly after takeoff (approx 1,...
2
votes
2answers
313 views

Why isn't the application of “carb heat” in initial piston multi-engine failure emergency procedures?

What is the rationale for not including the application of carb heat in the initial multi-engine airplane's engine failure procedure? I've recently starting flying light multi-engine airplanes again ...
6
votes
1answer
420 views

Was the safe landing of Southwest flight 1380 extraordinary or expected?

I've been reading with great interest and concern about the recent Southwest flight that resulted in the first fatality in that airline's history. There's one question I haven't seen answered, though:...
2
votes
2answers
181 views

What were the make and model of the engine that failed in flight Southwest 1380?

Regarding the tragedy of Southwest 1380 flight on 2018-04-17 involving an engine failure, what company manufactured that engine, and what engine model/type was it?
1
vote
2answers
74 views

What are the main sensor value that cause High pressure compressor fault in turbofan engine?

I have read the paper "Damage Propagation Modeling for Aircraft Engine Run-to-Failure Simulation" (Reference). I am doing analysis to find which sensors to monitor for the faults injected in the ...
5
votes
3answers
283 views

Does it help to climb in case of a partial engine failure?

When the engines of a airplane show irregularities that do not reduce performance but indicate a possible failure of the engines, is it useful to climb to a higher level, to increase the glide length ...
9
votes
4answers
3k views

Can an airplane engine fire be extinguished without shutting down the engine?

Airplane engines catch fire from time to time (and are falsely reported as being on fire even more often). In a modern airliner, the "fire handle" shuts down the engine, closes the fuel pipe, and ...
1
vote
0answers
105 views

What could cause an engine shutdown on a Q400 with CDS codes 732, 907, 915 and 938?

A Bombardier Q400 displays error code 938 on the Central Diagnostics System(CDS), which is attributed to turbomachinery chip detector. An examination shows debris in the detector hitch which is ...
0
votes
0answers
59 views

How long can a passenger aircraft glide without engine power? [duplicate]

Assuming that the aircraft is cruising at 36000 ft and lost engine power, how long could a passenger aircraft glide?
10
votes
1answer
2k views

What Caused the Engine-Failure of Southwest Airlines Flight WN-3472?

What caused the damage on Southwest Airlines Flight WN-3472? The inlet section of the engine is missing but the fan and nose-cone are still visible. Pictures taken during flight even seem to show ...
3
votes
0answers
209 views

What is the typical procedure if an engine fails during a vertical takeoff?

My understanding of VTOL aircraft (correct me if I am mistaken) is that the plane accelerates vertically until it's a bit off the ground, at which point the thrust is slowly vectored horizontally, and ...
9
votes
2answers
758 views

Does engine failure shut off the auto-pilot?

After answering this question it got me wondering whether there can be a situation where a complete flameout of engines could cause a serious loss of control if the auto-pilot were to continue to try ...
16
votes
2answers
2k views

Is there any legitimate reason for adding momentary power when descending at idle with full carburettor heat on?

Scenario: While demonstrating a simulated engine failure emergency landing a flight instructor puts on carburettor heat and reduces the throttle to idle of a small single engine Cessna. After a couple ...
9
votes
2answers
707 views

Is it common for a cold reciprocating engine to stop at idle?

The other day I started the engine of a PA28 and put it at 1200 RPM as per the checklist but the sound didn't seem right - so I tried each magneto and the power dropped a lot on one of them. I then ...
8
votes
1answer
425 views

How dangerous would it be to start a jet engine with coins inside?

With the multiple stories in the news of people throwing coins into a jet engine for good luck, I couldn't help but wonder how dangerous it would be if the act went unnoticed and the crew started up ...
3
votes
1answer
193 views

if your Seneca weight is 4000 pounds , and you have 800m visibility, would you take off? [closed]

An examiner asked me if your Seneca weight is 4000 pounds , and you have 800m visibility, would you take off ? I said by law the visibility is ok but still I would not because if we get an engine ...
1
vote
2answers
605 views

Why should a Piper Seneca not take off after an engine failure below 100MPH?

In the Seneca (PA34-200) AFM, in the ENGINE FAILURE DURING TAKEOFF section, it is noted that if engine failures occurs during takeoff ground roll and 100 MPH has not been attained, the pilot must ...
2
votes
0answers
137 views

How is health monitoring of large aircraft engines and components done?

How is online (in-flight) and offline (between flights) health monitoring of large aircraft engines and other essential components done? As far as I have been told, there are a lot of measured ...
1
vote
1answer
238 views

How dangerous would it be to take off at night with no ATC, no runway lighting system and have a single engine working?

I was wondering how dangerous it would be to have an engine failure (with a twin-engine) during take off at night when you have no runway lights (and no city close-by) and no ATC? Would using the ...
7
votes
2answers
3k views

How common is engine failure?

What are the failure rates for piston, turbine, and jet engines? (If more subdivisions of "engine" are necessary to make the data useful, please point them out).
2
votes
0answers
720 views

What is the glide ratio of a DA42?

I was looking for the best glide speed of a DA42 with both engines out, but it seems it's not in the POH. In the emergency checklist, it only mentions a speed of 85 knots to maintain on final approach ...
8
votes
3answers
3k views

Why weren't the Airbus A330 engines designed with a system to stop their fans?

Why wasn't the Airbus A330 designed to stop its fans (with some kind of 'handbrake')? To clarify, I am specifically talking about the aircraft that flew Air Asia flight D7237. During the flight the ...
3
votes
2answers
274 views

Why use a single engine plane instead of a multi engine one for a long range flight record?

Tupolev ANT-25 was designed specifically for setting flight range records. In 1937 two flights from Moscow, Soviet Union to USA via the North Pole happened - one covered 9130 kilometers and finished ...
7
votes
2answers
1k views

How do helicopter pilots practice auto rotation?

How do helicopter pilots practice auto rotation, and specifically, the landing phase? Timing the flare as ground is approaching seems critical to a successful auto rotation landing. Yet I can't ...
12
votes
5answers
3k views

Can the APU provide emergency thrust?

By David Monniaux (Own work) [GFDL, CC-BY-SA-3.0 or CC BY-SA 2.0 fr], via Wikimedia Commons Many larger airplanes have gas turbine APUs (auxiliary power units). It seems that their exhaust is ...
5
votes
1answer
504 views

Triple engine failure; which would you choose to keep left?

It is well known that planes with two engines must be able to land with one engine inoperable for their certification, and that four engine planes with two inoperable. Now, suppose you had a four ...
3
votes
1answer
649 views

How long does a non-ETOPS flight need to be able to fly in an one-engine-out situation?

Let's say that you're in a 737, mid-cruise in a non-ETOPS situation, and you lose one engine. Are there any FARs governing how long you need to be able to stay airborne? Or is all that's required the ...
3
votes
0answers
137 views

Is there any mechanism in engine mount to prevent it from shock load while landing?

how engine is mounted in wing restricting motion in any direction but it is still resistant to shock loads, or is there any mechanism inside engine associated to bearings that ll absorb shock loads ...
26
votes
6answers
9k views

Why not just drop an engine on fire?

I am interested in the case of Qantas Flight 32 and similar incidents, where there was a fuel leak after a number two engine explosion due to the disintegration of the turbine disc. It was a very ...
4
votes
1answer
708 views

What could cause a low-pressure compressor first stage blade of a turbofan engine to bend forward?

What could cause a low-pressure compressor first stage blade of a low-bypass turbofan engine to bend forward? I also noticed rotor path rubbing in the 9 to 12 o'clock portion (while usually this can ...
7
votes
1answer
1k views

Should you immediately attain max glide speed after engine failure?

For the Cessna 172 Skyhawk maximum glide is attained at a speed of 65 KIAS. If you're flying well above this speed, let's say 90 KIAS, and suffer an engine failure, what would be the best practice: ...
17
votes
3answers
3k views

In which direction should a turn-back be made after an engine failure on a multi engined airplane after take off?

In case one of the engines fails after taking off (let's suppose the left engine is the one that fails), which direction should we turn to go back to the airport? A left or a right traffic pattern?
6
votes
2answers
593 views

Do crosswind takeoffs increase the chance of a compressor stall?

I watched this video on YouTube: The video shows some pretty impressive take-offs in serious crosswind. Honestly, they looked even scarier than crosswind landings. ...
5
votes
4answers
7k views

Is turning off engines before landing “Normal”? [duplicate]

I was traveling by Airbus A380 recently and I was sitting near the wing. Throughout the flight, I could hear the airplane noise even with headphones on. Suddenly before landing, everything went ...
8
votes
1answer
1k views

Can a Boeing 747 or A380 produce a positive rate of climb with one engine only?

Assume that a Boeing 747 or Airbus A380 takes off at max takeoff weight. Minutes after takeoff, 3 engines fail, leaving only 1 engine operating. Can the aircraft achieve a positive rate of climb in ...
10
votes
2answers
2k views

Why is there a maximum altitude to restart a jet engine?

On all the turbojets that I have flown the maximum altitude a pilot can attempt a restart is 30,000 FT MSL. What factors go in to deciding what the maximum altitude is for an engine restart / relight?...
16
votes
3answers
1k views

How fast does cabin air pressure leak after a total engine failure?

When an airliner loses all engines while at cruising altitude, two things happen: The plane is a glider. It will descend no matter if you want to or not. The cabin pressure is no longer maintained. ...
8
votes
1answer
991 views

During an engine restart procedure, what are the purposes of a.) throttle back to idle and b.) primer “in and locked”?

I was making some study flashcards today for Emergency Procedures in the Cessna 162 POH, and realized that I don't quite understand steps 2 and 6 of the ENGINE FAILURE DURING FLIGHT (Restart ...