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.
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What does the "EMERG BATT switch" and the associated phrase "(if starting battery installed)" mean?
What does the "EMERG BATT switch" and the associated phrase "(if starting battery installed)" mean? I could not understand what the "EMERG BATT switch" and its associated ...
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On a Diamond DA-42, under what circumstances will the propeller auto feather?
I will be doing a multi-engine course in a 2006 Diamond DA-42 soon and I'm curious if this is true for the aircraft and under what circumstances the propeller would auto feather. For example, if the ...
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Can a helicopter autorotate from a hover?
If a hovering helicopter's engine fails, can the helicopter autorotate as it could if it were moving?
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Does a windmilling propeller create more drag than a stopped propeller in an engine out scenario?
For this question lets assume that we are talking about a fixed pitch propeller and not a variable pitch propeller. I do understand that variable pitch props should be feathered during an engine ...
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How controllable is the 737 in single-engine manual-reversion flight? Is it controllably landable (or go-around-able) in this condition?
The 737 is practically the only civilian jetliner still in production1 to have provisions for flight-control manual reversion; in the event of a total failure of the A and B hydraulic systems, the 737’...
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What could cause both engines on a 737-200 to fail at nearly the same time?
On July 2nd a 737-200 departing from Honolulu experienced engine trouble shortly after take-off. The flight ended with the flight crew having to ditch the aircraft and being rescued by the Coast Guard....
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Cessna 208B Caravan various emergencies
looking for help from some experienced Caravan pilots.
So for the 208B Caravan we have our emergency checklist,
which for engine failure tells us to power idle prop feather and fuel lever to idle and ...
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Why could a Rotax 914 light aircraft lose power at 7000 feet?
I was flying an RV 4 equipped with Rotax 914 engine and variable pitch propeller.
The problem was observed during flight above 7000 feet; vertical speed became 0, RPM overshoot for 2, 3 seconds to ...
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Why descend after a single engine failure in an Airbus?
The procedure says to descend to lrc ceiling. But, why do we need to descend?
The aircraft is still able to maintain speed even at higher altitudes,
at FL300, in FS2020, it was maintaining around 215-...
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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:...
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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 ...
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Testing magnetos during engine failure
I'm a student pilot (PPL) and the C172 I fly has the following item in the emergency checklist for in-flight engine failures:
MAGNETOS...............TEST
My ...
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how is ITT peak temperature affected by altitude during an airstart?
another T-6 Texan II (turboprop aircraft) question. When reading the airstart prodedure in the engine failure during flight section of the manual, I found something that Id appreciate the ...
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How does the weight affect the altitude that can be reached by trading speed after a total engine failure?
I recently read in the manual for The Beechcraft T-6 Texan II (a turboprop aircraft) about engine failure during flight at different altitudes and the gains from pitching up after the engine failure ...
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How does detonation and pre-ignition affect EGT/CHT readings?
I've read that during engine detonation EGT decreases and CHT increases. In contrast, when pre-ignition occurs both EGT and CHT will rapidly increase.
Unfortunately, I can't find a good explanation ...
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Has there ever been a two engine Air Carrier where both engines failed during the takeoff run resulting in an accident?
Has there ever been a two engine Air Carrier anywhere that has had both engines fail at some point during the takeoff run that resulted in an accident?
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What if you have a double-engine failure after V1 but before VR?
Imagine an A320 on the runway, starting its take off roll. The PM calls out "$V_1$". Just a second after $V_1$ is called out, and before $V_R$, you encounter a double-engine failure (an A320 ...
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Why do Audio Engine Fail Alarms not state which engine has failed?
When an engine fails on e.g. a 737, an alarm sounds to indicate an engine fire (but not failure). Why however, is there no verbal alarm stating which engine has failed, in the same way that "...
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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 ...
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Can aileron control maintain track in a single engine failure on a twin?
Let us say I am flying a twin-engine aircraft and I got a engine failure during cruise, without any control on rudder and use the ailerons only, can I still maintain the target track or heading? Will ...
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What is the minimum altitude needed to return to the takeoff airport in a 737 after dual engine failure?
Last week, I had my first lesson in a 737 sim. The instructor, when talking about risks with flying the 737, said the only time it would be "game over", would be if you had a double engine ...
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How do you quantify rudder effectiveness as a function of bank angle?
I'm currently reviewing just for fun aircraft dynamics based on OEI (one engine inoperative) scenarios. After reading that "lower pedal forces at higher bank angles" are required, it got me ...
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Does a jet engine keep running when it can no longer be controlled from the cockpit?
On the Qantas Flight 32 incident, the Airbus A380's number two engine encountered an uncontained rotor failure and partially damaged the controls of number one engine as well.
According to Wikipedia, ...
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Why does an engine fail if its FADEC fails?
Due to scarce resources on Full Authority Digital Engine Control (FADEC) and different FADEC technologies used in different engines, I have a poor understanding of it.
As the title says, why can't we ...
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What is a "runaway supercharger"?
During World War 2, my uncle was a navigator for a B-17G bomber based in the UK. On return from a bombing run over Frankfurt, the crew was forced to bail out over Belgium at 3000 feet altitude. My ...
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Could an airliner with only one functioning engine recover from a stall?
If a modern commercial airplane such as a Boeing 787 would stall with only one functioning engine, is it possible for the pilots to right it or would it require two functioning engines?
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Is it safe to use a propeller plane to fly commercially over the Tibetan Plateau?
I saw this youtube video today: Flying over Mt Everest. A lovely view of stunning nature - quite spectacular. However, I looked up the plane - or at least what I think is the plane - and found that it ...
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What happens to Vyse and Vxse above the OEI ceiling?
An EASA ATPL question/answer insists, counterintuitively, that a twin which loses an engine and must drift down will find its least rate of sink at Vxse. I've been trying to understand this, but haven'...
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Why aren't quadjets required to remain controllable after a sudden, simultaneous failure of two engines on one side?
For all multiengine jets, it must be possible to maintain directional control of the aircraft in the event of a sudden failure of one engine in flight, with the other(s) firewalled, down to not far ...
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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 ...
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Is there any mechanism in engine mount to prevent shock loads on engine while landing?
How engine is mounted in wing is restricting motion in any direction but is it still resistant to shock loads, or is there any mechanism inside engine associated to bearings that will absorb shock ...
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If an A320 loses an engine why does the landing category go to CAT3 single?
Following an A320 engine failure, why does the the landing category go to CAT3 single even if the APU has been started and is powering the AC bus that was lost by the failed engine?
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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 ...
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Does transport-type certification account for engine separation and its possible effect on hydraulic lines?
This question is inspired by the United Airlines Flight 328 where the No. 2 engine is damaged.
Some multi-engine aircraft are design to withstand the detachment of an engine while some are not. Boeing ...
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Are aircraft certified for inflight thrust reversal required to demonstrate controllability in an asymmetric-reverse-thrust scenario?
For most jetliners, the inflight use of reverse thrust is prohibited (and often physically impossible), due to the potential for loss of control in the event of an inflight reverser deployment (a ...
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What are autothrust and manual thrust on an A320 (or other aircraft)?
The accident report on the A319 G-EUOE incident in May 2013 mentions "manual thrust", and implies that using it is very unusual.
The autothrust system failed, requiring the use of manual thrust:
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Why does a pilot bank up to 5 degrees into the operating engine following failure of the other engine?
If a multi-engine aircraft suffers an engine failure while near minimum control speed (Vmc), one of the solutions is to bank up to 5 degrees into the operating engine to increase rudder effectiveness ...
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What is a Vmc roll?
Many aviation discussions of the TransAsia GE235 accident include comments like "that was a Vmc roll". What is a Vmc roll and how should you avoid it and/or recover from it?
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Is autorotation possible in a tandem rotored helicopter?
I just wonder, whether a synchronized autorotation is possible in case of turbine failure (one or both gas turbine engines). All Gearboxes obviously must turn not to desynchronize -> lethal
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Any ideas on what caused my engine failure?
On my second solo flight I came back to do a few landings, and after the first landing I applied full power for takeoff to which the engine responded by just shutting off on me. Not sure if my mixture ...
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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 ...
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Can a Boeing 747 or A380 climb with only one engine?
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 still achieve a positive rate of climb?...
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What is the procedure for an engine fire in the 737-800?
If there is a fire in one of the engines of the 737-800, what is the procedure to be followed in the following situations?
Climb
Cruising altitude
Approach
What should the pilot do in the cabin in ...
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What is the most severe engine failure for modern turbofan?
Today I read again something about the Southwest Airlines Flight 1380 and the related engine failure resulting in one passenger being sucked out of the window. As I understood it was a fan blade out ...
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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 ...
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Why "Throttle...Open 1/2 travel" on engine troubleshoot checklist?
Why do some engine troubleshoot checklists (on small single engine piston aircraft) call for throttle to only be open 1/2 travel? I suspect it has something to do with modern fuel injected engines, ...
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Was it ever considered to optimise a jet to normally operate with one engine shut off?
As I understand it, the current trend to reduce all commercial aircraft to no more than two turbofans has long-relevant reasons – the more engines, the higher the fuel consumption – and earlier jets ...
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Can a tiltrotor fly safely with one engine?
I am curious about tilt-rotor feasibility (such as AW609) against fixed-wing and rotor-blade aircraft (conventional helicopters).
One important issue that immediately arises in my mind is that both ...
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In an engine failure, should I expect less range than with the engine in idle?
I fly a C172 (fix pitch propeller) and when my instructor and I practice a simulated engine failure, we do not turn off the engine, instead we set the engine to idle.
In an actual engine failure, ...
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How does retracting flaps help extend the glide of an aircraft?
As per the video from Smithsonian channel
BA flight 38's captain retracted the flaps of the Boeing 777 by 5 degrees to extend glide, to travel further. Why?
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