P-51D engine failure on takeoff
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P-51D engine failure on takeoff
An analysis by Juan Brown of a successful landing after a pressure-carburettor failure on takeoff:
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Well done that pilot!
I usually leave the gear down until I could no longer land on the remaining runway, fearing exactly that event! But good job him!
I usually leave the gear down until I could no longer land on the remaining runway, fearing exactly that event! But good job him!
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No idea what the gear limit speed is on the P-51 but I seem to recall that on some warbirds it's rather less than 150kts which may be why retraction is usually so soon after lift off. Also if you need to put the aircraft down off the airfield, gear up is perhaps better as demonstrated by Mark Levy at Duxford a few years ago. Another bit of quick thinking...
Though of course it does also look cool. Nice work sir/madam...
Though of course it does also look cool. Nice work sir/madam...
From the flight manual, gear speed is 170mph (148kts). Recommended climb speed 165mph.
ENGINE FAILURE DURING TAKE-OFF.
a. The chances of the engine failing during take-ofl can be greatly reduced and prepared for by observing the following practices:
(1) Run up engine carefully and check thoroughly before take-off.
(2) Retract the landing gear as soon as the airplane is definitely airborne.
(3) Raise the flaps as soon as the airplane reaches a safe altitude.
b. If the engine fails immediately after the take-off, act quickly as follows:
(1) Depress the nose at once so that the airspeed does not drop below stalling speed.
(2) If external fuel tanks or bombs are installed, release them immediately.
(3) Release the sliding canopy by pulling the emergency release handle on top of the longeron just to the right of the instrument panel.
IMPORTANT
When releasing the canopy, bend forward and lower head slightly so as to avoid a head injury from the loose enclosure
(4) Make sure landing gear has started to come up. There is no time to take further action, and even if it is only unlocked and on the way up, the gear will collapse on landing. Do not try to lower gear. There is less chance of personal injury if the airplane is landed with the gear up.
(5) Lower the flaps fully, if possible.
(6) Move mixture control to “IDLE CUT OFF" and turn "OFF" ignition switch. ‘ '
(7) Turn fuel shut-off valve "OFF."
(8) Turn battery-disconnect switch "OFF."
(9) Land straight ahead, only changing direction sufficiently to miss obstructions.
(10) After landing, get out of the airplane as quickly as possible and remain outside.
ENGINE FAILURE DURING TAKE-OFF.
a. The chances of the engine failing during take-ofl can be greatly reduced and prepared for by observing the following practices:
(1) Run up engine carefully and check thoroughly before take-off.
(2) Retract the landing gear as soon as the airplane is definitely airborne.
(3) Raise the flaps as soon as the airplane reaches a safe altitude.
b. If the engine fails immediately after the take-off, act quickly as follows:
(1) Depress the nose at once so that the airspeed does not drop below stalling speed.
(2) If external fuel tanks or bombs are installed, release them immediately.
(3) Release the sliding canopy by pulling the emergency release handle on top of the longeron just to the right of the instrument panel.
IMPORTANT
When releasing the canopy, bend forward and lower head slightly so as to avoid a head injury from the loose enclosure
(4) Make sure landing gear has started to come up. There is no time to take further action, and even if it is only unlocked and on the way up, the gear will collapse on landing. Do not try to lower gear. There is less chance of personal injury if the airplane is landed with the gear up.
(5) Lower the flaps fully, if possible.
(6) Move mixture control to “IDLE CUT OFF" and turn "OFF" ignition switch. ‘ '
(7) Turn fuel shut-off valve "OFF."
(8) Turn battery-disconnect switch "OFF."
(9) Land straight ahead, only changing direction sufficiently to miss obstructions.
(10) After landing, get out of the airplane as quickly as possible and remain outside.
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Though I don't dispute what the military flight manual for a P-51 says, I expect that the priorities for military operation of the P-51 were different in the day, from the civilian operating priorities for a rare warbird now. The only time I have ever retracted the gear right after takeoff has been a very few occasions where I needed the improved acceleration and climb performance as early as possible. I certainly agree that there are times when the forced landing surface would be unsuitable enough that the airplane is better bellied in, but the runway ahead of you is not that!
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Do not try to lower gear. There is less chance of personal injury if the airplane is landed with the gear up.
SOPs are made for average cases, not for all cases and this is a perfect example.
That said should he had followed the SOP and left the gear retracted and crash the aircraft badly on the runway, seen the ramaining concrete available, I am sure some of our traditional armchairs judges here would still have questionned his actions..
Any idea where this was...?
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I think that the standard procedure of retracting the gear on a forced landing in this type of aircraft was put in place to prevent overturning. With a very heavy engine in front and the gear digging into soft ground, overturning is a serious threat and will almost certainly trap the pilot inside. Whereas landing flat on the belly will rarely result in overturning, no matter what kind of ground one lands on. Obviously this pilot was very confident that he would be able to glide to a landing on solid ground and therefore elected to extend the gear.
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You are absolutely right of course, also the P-51 is a military aircraft made for WW2 to be flown by low hours pilots ,and the POH reflects that. I was just being a bit sarcastic .
The reaction time from the engine failing and the gear being selected down concurrent with big nose pitch down is less than 3 seconds. This pilot was mentally prepared for what happened and reacted immediately, forcefully and deliberately. Could you ?
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I can't imagine, those living peacefully under the approach path appreciating getting the payload intended for the enemy......
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Excellent handling by the pilot; I think it also should emphasise to every pilot the importance of using the `full` length of the runway,even if it is 10000ft long,never an intersection,as I`ve seen guys do,even on 6000ft r/ways, and the `final` Captain`s brief` of `What if`..?,before you line up,and push-up`...and always use `full power as early as you can,as you do no favours to the engine without the extra enrichment on big pistons....jets/t/props are different...
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those living peacefully under the approach path appreciating getting the payload intended for the enemy...
Kudos to the guy for making that decision against the SOP. and saving the aeroplane. . .
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The action that the pilot took might not have been against an SOP, as there could be more than one SOP for an airplane, depending upon how it is being used. Certainly with an engine and propeller which are very much more rare now, an operating technique which has a decent chance of preventing them being damaged is better than following a military SOP, which would certainly seen them ruined.
The action that the pilot took might not have been against an SOP, as there could be more than one SOP for an airplane, depending upon how it is being used. Certainly with an engine and propeller which are very much more rare now, an operating technique which has a decent chance of preventing them being damaged is better than following a military SOP, which would certainly seen them ruined.
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Hmm, that seems to be deviating away from the principle, the aircraft is owned by the insurer, once a serious issue develops.
And, I opine that most present day recreational P-51 pilots are probably pretty experienced and skilled - perhaps more so than the pilots fresh out of P-51 training during the war. so expecting a demonstration of skill greater than that for which a very old SOP was intended is not unreasonable...
the flight authority has been very specific that the system to jettison them must be disabled