Three engine airplane with two eng inop

[MarkerInbound]

I've done several engine out ferries in 727. Boeing provides takeoff data for one engine inop takeoffs and you compute runway and climb requirements to meet the same standards as when all engines are turning. Major part of flight crew training covered loss of a second engine during takeoff. Depending on the dash number engine and conditions, you're good up to 140,000 pounds. Had a sim default back to 170,000 pounds one time and got off the runway to 100 feet for about 10 miles while the sim instructor engaged some 'speed' dumping. As said above, when you get to 200 knots clean, you've got it made. We pulled the C/B on the ground interconnect to gang the electric "B" system to the engine driven "A" system hydraulics. Depending on whether you had engine hydraulics or not, the commit point for landing was flap extension or gear extension.

[glhcarl]

point8six:

The L-1011 operator doing the two engine ferry out of Mexico City was Eastern and it was a -1 not a -500. The No. 1 engine was inop, No. 3 failed on rotation. If it had been the No.2 engine that was the second failure the chances are they would not have been able to return.

411A:

B-System hydraulics is provided by the No. 2 engine, as is C-System.

[411A]

411A:
B-System hydraulics is provided by the No. 2 engine, as is C-System.

Quite true.
However, if number two engine is shutdown, and the B or C hydraulic systems are not compromised, these systems can be pressurized with ATM's (ADP's for you Boeing folks), keeping these systems fully serviceable for all normal functions.
A nice arrangement.
However, should another engine fail, you would now have less bleed air to power the operating ATM's, so configuration changes need to be carefully planned for optimal operation.
As the TriStar has four independant hydraulic systems, redundancy is enhanced considerably over other three engine designs.

[con-pilot]

If I recall (others, help me out, please), you needed to be clean and have 200 KIAS. Then, you would be able to fly.

That is what I recall as well, with the possible exception that in the 200 series you might need 210 knots.

Depending on whether you had engine hydraulics or not, the commit point for landing was flap extension or gear extension.

Yes, if you had to manually extend the gear you were committed to landing at that point. One day just playing around after finishing a recurrency course the sim instructor had me try to go around on one engine with the gear down just for the hell of it. We made it a lot farther that I thought we would, of course the instructor had configured the sim to be an empty aircraft with only about 15,000 pounds of fuel.

However, I DO remember that flying the 727 with only one turning was a required maneuver in the simulator to obtain the type rating.

That is correct, at least it was with me. I started off with a V-1 cut, normal two engine climb out, return for an ILS to minimums, a miss due the old lost fuel truck on the runway and the second engine failure just after the gear and flaps were retracted. In my case the second engine failure was an uncontrollable engine fire. However, miraculously the weater suddenly became clear and the single engine approach and landing was visual.

I sure liked flying 727s, miss em.

411A, I never had the pleasure to fly the L1011, however, every person that I have talked to that have flown them loved them, must be a hell of an aircraft.

[stanley]

go round

the 10 would do a go round from 1000ft which was also the point you made the the comit to land and put the gear down ,and then it was land regardess

[JammedStab]

Depending on whether you had engine hydraulics or not, the commit point for landing was flap extension or gear extension

If you are manually extending the gear, it is likely because you lost A hydraulics which control gear and normal operation of flaps both on the leading and trailing edges. If A system has been lost(due to #1 and #2 engines out) do you not commit to land not at gear extension but earlier, at initial flap extension due to the inability to now retract the LED's?

As the TriStar has four independant hydraulic systems, redundancy is enhanced considerably over other three engine designs.

Does this three engine design have manual reversion in case all hydraulics are lost?

[galaxy flyer]

If I remember correctly, you didn't want to take a 727 with #3 generator inop because IF you lost #1 and #2, you wouldn't be able to power the rudder and control would become questionable. Actually, as the sim instructor demo's, impossible. I still can picture looking up from the floor (cranking the mains down, figuring, at least, the mains should be down) as we scooted by the Marriott off of 9L at KMIA. 27 years ago.

GF

411A, The Galaxy was really a wonder also, if only it had decent maintenance support.

[glhcarl]

Does this three engine design have manual reversion in case all hydraulics are lost?

No.

However, you do have four independent systems each driven by its own variable speed pump. Backed up by two Air Turbin Motor (ATM) pumps and two Power Transfer Units (PTU). The ATM's are driven by engine bleed air or APU compressor air. The PTU's mechnically transmit power from one system to another, without fluid transfer. In the event of all three engines fail there is a Ram Air Turbin (RAT) which provides enough power for controled flight.

[stilton]

Don't think you will find a jet transport larger than a 707 with Manual reversion.

[jumpseat1]

YES, however your need two very important elements to successfully perform this maneuver. #1, a Boeing B727. #2, have your act together.

[twistedenginestarter]

CRM saves lives

"'Listen to the experience expat Captains bring to this airline, listen and learn, or you are no good.'"

I'm surprised at you 411A. Far too many crashes occur because young pilots are frightened to question the actions of captains. You're hardly helping the climate to improve, are you?

[411A]

Two questions, twistedenginestarter.
Young (say, age 25, with 3-400 hours) less experienced pilots start off in the right hand seat to, among other things, gain the necessary skills to be able to handle the airplane well, and make the requisite decisions to transform themselves into more experienced airman.

Do you really believe that they can accomplish these tasks by not listening and learning from their more experienced senior crew members?

OR, do you truly believe that all things aeronautical can be learned in text books and classrom sessions, so that a brand new pilot truly 'knows it all' and hardly needs any input from more senior/experienced crew mewmbers?

Answers on a postcard.

PS:
An airliner is not run by a committee.
Only one crew member is in charge, and that one crew member is the Captain...and this ain't gonna change anytime soon, junior pilots thoughts/pronouncemens notwithstanding.

[hetfield]

Wasn't the 727 of Maroc's King Hassan (piloted by Mohammed Kabbej) on one engine only after an air attack?

[411A]

In that case why did the first officer make this mistake, if you had briefed the go-around procedure????? Maybe too short a brief.

Day two of the sim session, the instructor had reviewed the two-engine inop details during the brief prior to going into the box....and in any case, the go-around procedure is reviewed and called out by the Flight Engineer directly from the QRH, as part of the checklist.

In short, the F/O, who was quite junior, had no excuse whatsoever.
It simply is a matter of RTFB.

[Sleeve Wing]

411A.

Quote. >"Do you really believe that they can accomplish these tasks by not listening and learning from their more experienced senior crew members?

OR, do you truly believe that all things aeronautical can be learned in text books and classrom sessions, so that a brand new pilot truly 'knows it all' and hardly needs any input from more senior/experienced crew mewmbers?"<

Not PC these days, I know, but with you all the way.

The number of times I must have mentioned to some callow "whizz kid" , "Think about it. The Captains don't get their four bars for nothing. Watch and listen. You'll always learn something.............even if it's sometimes how NOT to do it !

Sleeve.

[JenCluse]

. . *fires my recall of a sim incident many years ago, when, as middle order F/O 727, I was short noticed to do sim support for a Capt being checked by God. In those days the (ex airline) Ansett lifted the Boeing procedures exactly.

We did a number of eng failures, until at the end I asked what we were to do if we had a second, sequential, donk go.

I was imperiously informed that statistically this would not happen, and was not worth considering. This following a recent holiday where I had spoken to a VC-10 crew who had had just that happen two weeks prior, and one week later had talked to an engineer in SYD who described a L-1011 which had thrown a blade which was ingested by #2.

On a tryout, I just followed my basic instincts - @ 700' when it happened I started trading height & cleaning at absolute min retract speed (but I had a rule of thumb giving Vcl+/-1kt for any weight, and stuck to that. It was down 250' before I had the necessary 227kt (as I recall) clean, and started a gentle climb with the good one firewalled.


Longish final from a healthy 1,500', still firewalled but inside 5 mins, holding every gram of energy clean until I had to breath some flap out, FE briefed to drop one main gear mechanically at a time & await further orders, nosewheel locked down a few seconds before it touched. Done.


Just like any glider circuit, really. Energy management.

[411A]

411A, I never had the pleasure to fly the L1011, however, every person that I have talked to that have flown them loved them, must be a hell of an aircraft.

Indeed so, con-pilot, in fact I (personally) turned down the ahhh 'upgrade?' to the B747 (twice), simply because...as referenced to first generation wide-body jet transport aircraft, there is only ONE type that has never 'crashed' due to an aircraft/engine system malfunction.
It is the Lockheed L1011.

Made in America...with proper RollsRoyce engines..naturally.
RR, the best in the business, with turbine engines...bar NONE.

In my, ahhh, not so humble opinion, of course.

[Dani]

Quote by 411A:
An airliner is not run by a committee.
Only one crew member is in charge, and that one crew member is the Captain...and this ain't gonna change anytime soon, junior pilots thoughts/pronouncemens notwithstanding.

CRM at its best!

[Spooky 2]

There was obviously a signifcant difference between say a L1011, -1 and a, -500. In the -1 going between PHNL and KLAX or vice versa, you could get into a situation where upon the loss of two engines you had to dump some fuel so as to reduce weight for 2EO performance so as to stay out of the water. This tended to be a very critical stage length for this particular aircraft and on more than one occasion when it was determined your fuel load was falling behind on the score, a crew elected to return to their point of departure. Obviously this did not sit well with the airline (Delta) and they created a work around to prevent this from happening. I'm sure everyone here knows that the 2EO ETP for the L1011 and the DC10's were the norm. The scenario was a catastrophice failure of a wing engine that FOD'd the tail engine combined with a loss of pressurization. Not sure that anyone ever experienced this situation but that's was the logic as I understood it for this ETP construction.

Two engine out approaches were the norm for every PC check that I ever did in the DC10, L1011, MD11.

[MarkerInbound]

An approach with 50% engine failure is required on all PIC P/Cs in the US. The FAA doesn't count half an engine so all three engine types will get down to one engine