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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Does an airplane fly less or more efficiently after a mid-flight engine failure?
When a multi-engine airplane loses an engine mid-flight, does it consume more or less fuel per distance travelled during the remainder of the flight with fewer engines operative? In other words, is ...
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What happens when a helicopter loses the engine and autorotation is not initiated?
I am thinking of a very basic main and tail rotor configuration helicopter, without any aerodynamic surfaces like vertical or horizontal stabilizer, in a steady state horizontal forward flight at ...
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Angle of bank affects on descent rate
I’m attempting to do some maths regarding the ‘impossible turn’ (engine failure after takeoff, followed by a 180+ deg turn back to the field to land). I understand how to determine radius, rate of ...
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Does anyone know why the Horten Ho 229 V2 crashed?
On February 18, 1945 the German Horten Ho 229 crashed due to an engine failure and I was wondering if the failure was caused because of the planes irregular shape or some other external factor. I will ...
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How do you determine VMCG, if its yawing moment by the inoperative engine is only be corrected by the rudder?
The requirement of VMCG is:
VMCG, the minimum control speed on the ground, is the calibrated airspeed during the takeoff run at which, when the critical engine is suddenly made inoperative, it is ...
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Scared of flying in an Airbus A220
The A220 is exclusively powered by PW1500G geared turbofan engines, which have a history of reliability issues.
Multiple airlines grounded their entire A220 fleet amid engine concerns (A220 Engine ...
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How would a GE9X's react to ingesting a person?
Was wondering how a GE9X (or GE90/etc.) would fare after ingesting a person, at takeoff or climb thrust. (For a story.) Obviously the person is dead and the engine can safely be assumed to be a write ...
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What would happen if both engines of a twinjet cut out at or immediately after V1? [duplicate]
Disclaimer: Not a pilot or an aviation guy, just someone who's flown on planes before.
So, yeah. Assume A and B are the PIC and copilot, respectively, of a twin-jet plane (doesn't matter which one). B ...
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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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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 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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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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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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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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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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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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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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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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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 "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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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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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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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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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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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?
user49475
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Can APU start in-flight using RAT or battery power?
Is it possible for a passenger jet to start its APU using power from the RAT? If so, are there plausible benefits to doing so (like supplying hydraulic pressure to the wheel brakes)? Do modern ...
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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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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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Why was there no thrust from the engines in the TACA Flight 110 incident?
I have just watched Mayday episode 11, season 11, "Nowhere to Land" about TACA Flight 110 incident. Most key issues of the incident are clearly explained in the episode:
Why both engines turned ...
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Are jet engines designed in a way to make an explosion result in the least damage possible?
I know most engines are super reliable today, but do manufacturers do anything to at least make an explosion result in the least damage possible?
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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 would engine fire cause loss of control?
I was wondering why engine fire would cause of loss of control or crash. There is loss of power and even drag. But could some expert please expand on the troubles of a engine fire?
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Does one-engine cruise consume less fuel than two-engine cruise?
Scenario 1. A two-engine airliner experiences rapid depressurization and makes an emergency descent to 10,000 ft, and diverts to the nearest airport.
Scenario 2. The same two-engine airliner ...
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Why would a pilot use ailerons for countering asymmetric thrust in mid-flight?
A inexperienced 747-400 pilot used ailerons for counteracting asymmetric thrust in 1998 aboard United Airlines Flight 863 (YouTube recreation).
Why would an airline pilot do such a mistake? Why would ...
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What is the source of emergency power for a 727?
I've found a couple of sources that state the 727's APU cannot be started while flying, as it draws air from the wheel well.
It drew air from inside the wheel well, so it was only for use on the ...
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