have you seen a loop jump land on a back inside edge. I would say that was a Wrong Edge Landing.
There are a couple of different things we might be talking about here. To try to keep them straight...
First, let's say we're talking about counterclockwise jumpers.
Let's talk about single axels instead of single loops, OK? I have a reason for changing the kind of jump.
Let's say a counterclockwise jumper does a normal, correct single axel jump,
right back outside (RBO) edge takeoff to RBO landing, 1.5 revolutions in the air. That's the quintessential axel jump that meets every point of the definition of the jump.
Now, there are several ways that this same skater might execute an axel jump in a way that doesn't exactly match the standard definition of the jump.
Some of them are unintentional and count as errors, but they don't change the definition of the jump. It's still a single axel, albeit a less than perfect one.
There are other ways that a skater may execute a single axel jump that intentionally change or vary one aspect of the standard jump. Because they are intentional, it's possible to perform them very well, just as "perfectly" as the standard no-variation version.
Do these differences from the standard change the name of the element? Well, it depends, but usually not. For this post, I'm going to look at only three examples.
1)
Inside edge landing on the normal landing foot. The skater executes a single axel jump, taking off from the left forward outside edge. She comes down just slightly short of rotation,
on the right foot but on the
back inside instead of back outside edge.
This is what I would call a Wrong-Edge Landing. It is an error. If the underrotation is very small, nowhere near 90 degrees short of what it should be, and there is no other error on the jump, then there will be no < call and the GOE will probably be -1.
This
RBI edge travels
clockwise, the opposite direction from the rotation of the jump in the air and the opposite direction from the expected RBO landing. Therefore it's almost impossible to sustain as a flowing landing.
This error often occurs because the jump has no speed at the landing, so the skater is unable to sustain the one-foot landing for longer than one or two blade lengths before stepping onto the other foot. It is usually enough to count as a one-foot landing, though. The blade may or may not rock over onto the normal RBO landing edge briefly before the skater has to step or stroke onto the left foot.
Occasionally the skater does have enough speed to flow out of this kind of wrong-edge landing. She lands on the RBI edge with some speed and then rocks over onto the RBO to establish a normal landing position. The edge change would be visible in the tracing on the ice.
2)
Intentional inside edge landing on the opposite foot than expected. The skater takes off from a left forward outside edge, and lands on the back inside edge of the
left foot, with good flow and control on that
counterclockwise LBI landing. She may then continue to another step or edge in the ongoing flow of the program or of a step sequence, or she may continue directly into a jump that takes off from the LBI edge, either salchow or flip.
This is not an error. It is an intentional variation of the axel jump, a choice to land on the other foot.
This particular variation of the axel jump has a name: "one-foot axel."
It will be called as 1A in the IJS protocols, will receive the same base mark as a normal 1A, and will receive positive, negative, or base GOE depending on how well it's executed.
1) and 2) are completely not the same thing. They both involve landing on back inside edges, but 1) is a slightly flawed landing on the normal landing foot, with the edge traveling in the wrong direction for the short period of time it's on the ice before a step or edge change; in 2) it's an intentional variation to land on the other foot, traveling in the correct direction.
Another possibility (very common for beginners first learning axels, very uncommon at high levels) is
3) The skater fails to shift her weight in the air over to the landing side and lands on the back inside edge of the
left foot, traveling
counterclockwise.
Essentially what she has done is the same as a one-foot axel, but by mistake.
When this happens unintentionally, chances are that the jump will look awkward in the air, the landing will have no flow, and the skater will have to put the other foot down immediately. In that case it will essentially be a two-foot landing and the jump would earn -2 or -3 GOE. It might also be underrotated.
I wouldn't call this a "wrong-edge landing" but rather a "wrong-foot landing."
However, it's only "wrong" if it's done badly, by mistake. It is officially allowed to land on the other foot, as in example 2).
For a counterclockwise jumper, the normal landing edge is
right back outside.
Landing on the clockwise
right back inside edge is a wrong-edge mistake.
Landing on the counterclockwise
left back inside edge is either a wrong-foot mistake or an intentional variation.
All of the above is also true for any other jump with any takeoff and any number of revolutions. But single axel is where we used to see it most commonly as an intentional choice, albeit not extremely commonly -- the main reason we see it even less often in IJS is the limit on the number of jump passes allowed in the IJS well-balanced program rules. One-foot axel is not something that low-level skaters can usually do well, and high-level skaters generally don't want to waste a jump slot on a single axel.
We also see intentional opposite-foot back inside landings on single loop jumps. This single loop variant also has a special name, "half-loop," which can be confusing because it's a full-revolution jump. The rules about how the half-loop is to be scored or ignored under IJS have made an exception to the fact that any jump can legitimately or accidentally land on the opposite foot, and the rules for how they're handled when connected to other jumps have changed significantly this year. That's why I chose to discuss axels rather than loops in this discussion.
But the principle remains the same. Landing on the back inside edge of the normal landing foot is a mistake. Landing on the back inside edge of the other foot is often intentional. If you want to discuss back inside edge landings, make sure to clarify which kind you're talking about.