Traffics landing before the runway

[jcuellar 9]

Hi,

I'm trying to do some plane spotting at EGLL but I noticed that all landings are touching down before the runway, not sure if this is a QNH related issue, but in both runways is the same. Last week plane spotting was perfect, aircraft landing at the correct spot.

Thankyou.

[kiek 1,215]

57 minutes ago, jcuellar said:

I'm trying to do some plane spotting at EGLL but I noticed that all landings are touching down before the runway, not sure if this is a QNH related issue, but in both runways is the same. Last week plane spotting was perfect, aircraft landing at the correct spot.

That's a QNH issue. The QNH at EGLL is extremely high (1040) at the moment. This means PSXT has to caculate a lot of heights during the landing based on the Vertical speed (not very acurate)  just before touch down, because in the RT data the height is 0 with these QNH's.

Edited February 7, 2023 by kiek

[jcuellar 9]

11 hours ago, kiek said:

That's a QNH issue. The QNH at EGLL is extremely high (1040) at the moment. This means PSXT has to caculate a lot of heights during the landing based on the Vertical speed (not very acurate)  just before touch down, because in the RT data the height is 0 with these QNH's.

Thx for the explanation. This is going to happen with airports with high or low QNH? Mexico City (MMMX) is the same thing now, aircraft landing on the street, at list 1,000 ft before the airport.

Edited February 7, 2023 by jcuellar
Add more questions.

[kiek 1,215]

On 2/7/2023 at 9:59 PM, jcuellar said:

Thx for the explanation. This is going to happen with airports with high or low QNH? Mexico City (MMMX) is the same thing now, aircraft landing on the street, at list 1,000 ft before the airport.

With high QNHs .

In RT V10 this problem will be gone, so you'll have to wait.

[blueskies2k40 0]

On 2/20/2023 at 2:32 PM, kiek said:

With high QNHs .

In RT V10 this problem will be gone, so you'll have to wait.

Hi this issue still happening planes landing way before the runway sumtimes can this be fixed manually????

[somiller 694]

9 hours ago, blueskies2k40 said:

Hi this issue still happening planes landing way before the runway sumtimes can this be fixed manually????

...and sometimes 50 ft above the runway.

[kiek 1,215]

4 hours ago, somiller said:

...and sometimes 50 ft above the runway.

With RTV10 (not yet released) this should go better...