Heavy landing report
Thread Starter
Joined: Jun 2001
Posts: 447
Likes: 2
From: uk
Heavy landing report
Can anyone tell me the difference between VG min, VG max and VG land?
I had a heavy landing the other day with: (on the DFDMU)
VG min - 1.2
VG max - 2.0
VG land - 1.7
Our limit is 1.8 but i thought this was for land not max, whats the difference?
BB
I had a heavy landing the other day with: (on the DFDMU)
VG min - 1.2
VG max - 2.0
VG land - 1.7
Our limit is 1.8 but i thought this was for land not max, whats the difference?
BB
Cunning Artificer
Joined: Jun 2001
Posts: 3,125
Likes: 7
From: The spiritual home of DeHavilland
I set up the flight data analysis system in our company several years ago and was trained in data analysis and also in aircraft accident investigation. From training and again confirmed by some work we did with Boeing - on a customer's aircraft that was "bent in the middle like a one string fiddle" with nothing spectaular on the record - I'd point out that instantaneous readings from a digital recording system are not conclusive in capturing the maximum G levels achieved. I don't know the sampling rate for vertical acceleration in your aircraft but it is generally 16 times a second with another couple of hundred parameters taken between each sample.
It would be dangerous to make assumptions about maximum 'G' simply from looking at a flight recording. I'm afraid that if the crew thought it might be a heavy landing and report it as such, you really must do a Heavy Landing Check. You can't simply write it off against a flight recording.
It would be dangerous to make assumptions about maximum 'G' simply from looking at a flight recording. I'm afraid that if the crew thought it might be a heavy landing and report it as such, you really must do a Heavy Landing Check. You can't simply write it off against a flight recording.
Joined: Jan 2002
Posts: 1,271
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From: West Country
I'm afraid that if the crew thought it might be a heavy landing and report it as such, you really must do a Heavy Landing Check. You can't simply write it off against a flight recording.
Thread Starter
Joined: Jun 2001
Posts: 447
Likes: 2
From: uk
I'm operating a B757.
We thought it was a firm landing not a "heavy" one . I guess this depends on the crew.
The DFDMU generated a "heavy landing report". This is what surprised us. We thought we were ok as the Land G was only 1.7 and our upper limit is 1.8 only engineering stated that the "max" g is limiting at 2.0.
just wondering what the difference between "landing" and "max" G was.
BB
We thought it was a firm landing not a "heavy" one . I guess this depends on the crew.
The DFDMU generated a "heavy landing report". This is what surprised us. We thought we were ok as the Land G was only 1.7 and our upper limit is 1.8 only engineering stated that the "max" g is limiting at 2.0.
just wondering what the difference between "landing" and "max" G was.
BB
