Light aircraft, minimum height?

Light aircraft, minimum height?

Author
Discussion

chilistrucker

Original Poster:

4,541 posts

151 months

Monday 21st July 2014
quotequote all
Daft question maybe, but thought i'd ask.
Is there a minimum height that these should fly at?
About 15 minutes ago it sounded like a small Cesna type plane was landing in my garden :0
The nearest airport is Southend, (10 miles away) and we're used to planes flying overhead here all the time as we are in Basildon so under a fair few routes. It was def a plane as we get helicopters land at the rear of our house all the time for Basildon hospital so i think i can clearly tell the difference between a helicopter and a smallish plane.

I can't believe how loud it was as it went over, and 5 minutes later a helicopter has turned up and been hovering since, followed by a fair few sirens.

tim0409

4,385 posts

159 months

Monday 21st July 2014
quotequote all
according to Twitter it's a police helicopter hovering at the moment.

mikef

4,858 posts

251 months

Monday 21st July 2014
quotequote all
The low flying prohibitions
(a) Failure of power unit
An aircraft shall not be flown below such height as would enable it, in the event of a power unit failure, to make an emergency landing without causing danger to persons or property on the surface.
(b) The 500 feet rule
Except with the permission in writing of the CAA, an aircraft shall not be flown closer than 500 feet to any person, vessel, vehicle or structure.
(c) The 1000 feet rule
Except with the permission in writing of the CAA, an aircraft flying over a congested area of a city town or settlement shall not fly below a height of 1,000 feet above the highest fixed obstacle within a horizontal radius of 600 metres of the aircraft.
(d) The land clear rule
An aircraft flying over a congested area of a city town or settlement shall not fly below such height as will permit, in the event of a power unit failure, the aircraft to land clear of the congested area

Of course, practice forced landings are part of every light aircraft pilot's training, but you don't tend to hear those until they give it the gas to get moving again

chilistrucker

Original Poster:

4,541 posts

151 months

Monday 21st July 2014
quotequote all
Thankyou both wink
Its gone quiet now, just struck me as odd though with how low the first noise was and i'm sure it was a plane.
Oh well.

Chucklehead

2,730 posts

208 months

Tuesday 22nd July 2014
quotequote all
Also, think of 500 feet as a bubble around the plane.. the pilot could, in theory, be 100 feet off the ground and 500 from your house.

They tend to just appear lower than they actually are.

Mr Taxpayer

438 posts

120 months

Tuesday 22nd July 2014
quotequote all
500' Minimum separation distance, that's vertical and lateral. It did allow me to fly a Gazelle helicopter along the line of the M6 through the Shap/Tabay pass.

ccr32

1,970 posts

218 months

Tuesday 22nd July 2014
quotequote all
Generally during PPL training, you will do one or maybe two PFL's (practice forced landings, down to about 50ft) into a field before going and finding another one elsewhere so not to tick off any of the locals.

OP - if you have a particularly large bit of land out the back of your gaff, I'd suspect that's exactly what was going on.

If you don't have a particularly large bit of land out the back, then maybe the student made a bad selection of suitable landing area and was told to look elsewhere for their next one by their instructor, hence why you only heard it once smile

ccr32

1,970 posts

218 months

Tuesday 22nd July 2014
quotequote all
Mind you, I just noticed you posted that at 11:30 in the evening, so it wouldn't have been PFL's come to think of it!

Probably just the Police helicopter then, with a gust of wind making it sound different temporarily...

woodypup59

614 posts

152 months

Tuesday 22nd July 2014
quotequote all
If Helis land there, maybe the plane pilot had an emergency and grabbed the field with the big H sign in it.

Perhaps explains why you've now got the Em Servs there now.

chilistrucker

Original Poster:

4,541 posts

151 months

Tuesday 22nd July 2014
quotequote all
Mr Taxpayer said:
500' Minimum separation distance, that's vertical and lateral. It did allow me to fly a Gazelle helicopter along the line of the M6 through the Shap/Tabay pass.
I bet that was fun. Drove that route many a time in the wagon and really like it, i'm sure its much more fun in a Gazelle smile in fact from there all the way upto Glasgow you can often see some interesting low flying aircraft.
Thanks again all for the info, always like learning new things. It must have just been the helicopter and i heard it wrong, (could have sworn it was a plane though.)

wokkadriver

695 posts

242 months

Wednesday 23rd July 2014
quotequote all
It's worth bearing in mind that most light aircraft don't have anything more technical than the pilot's eye to judge 500'. I have certainly seen some, ahem, 'interesting' interpretations by quite a few private pilots!

simonej

3,894 posts

180 months

Thursday 24th July 2014
quotequote all
Bear in mind as well that most of the public can't judge the height very well either. I was once reported for low flying, complete with police interview, despite being at 3000' and in controlled airspace.

RWD cossie wil

4,308 posts

173 months

Wednesday 30th July 2014
quotequote all
wokkadriver said:
It's worth bearing in mind that most light aircraft don't have anything more technical than the pilot's eye to judge 500'. I have certainly seen some, ahem, 'interesting' interpretations by quite a few private pilots!
Or a Baro altimeter?

HOGEPH

5,249 posts

186 months

Wednesday 30th July 2014
quotequote all
RWD cossie wil said:
Or a Baro altimeter?
That won't tell you how high above the ground you are. You need a radalt for that.

mrloudly

2,815 posts

235 months

Wednesday 30th July 2014
quotequote all
HOGEPH said:
RWD cossie wil said:
Or a Baro altimeter?
That won't tell you how high above the ground you are. You need a radalt for that.
You can be at 1' above the floor as long as you have 500' lateral separation. Altimeters won't
give you this info, Barometric or Radar ;-)

RWD cossie wil

4,308 posts

173 months

Wednesday 30th July 2014
quotequote all
mrloudly said:
HOGEPH said:
RWD cossie wil said:
Or a Baro altimeter?
That won't tell you how high above the ground you are. You need a radalt for that.
You can be at 1' above the floor as long as you have 500' lateral separation. Altimeters won't
give you this info, Barometric or Radar ;-)
I realize that, the point I was making is that a Baro alt will give you reasonable idea of how high you are if it's set correctly & you are using a decent chart? I may have misunderstood wokkas point, I was thinking he meant vertical distance not lateral seperation. It boils down to being sensible really, don't piss people off & you tend to stay out of trouble!

mattdaniels

7,353 posts

282 months

Friday 1st August 2014
quotequote all
Chucklehead said:
the pilot could, in theory, be 100 feet off the ground and 500 from your house.
No he couldn't - if he did that he'd be in breach of a different section of the Air Law rule 5 (the low flying rules)

[quote]Except with the permission in writing of the CAA, an aircraft flying over a
congested area of a city town or settlement shall not fly below a height of 1,000
feet above the highest fixed obstacle within a horizontal radius of 600 metres of
the aircraft.

ecsrobin

17,078 posts

165 months

Friday 1st August 2014
quotequote all
mattdaniels said:
Chucklehead said:
the pilot could, in theory, be 100 feet off the ground and 500 from your house.
No he couldn't - if he did that he'd be in breach of a different section of the Air Law rule 5 (the low flying rules)

[quote]Except with the permission in writing of the CAA, an aircraft flying over a
congested area of a city town or settlement shall not fly below a height of 1,000
feet above the highest fixed obstacle within a horizontal radius of 600 metres of
the aircraft.
Unless you live in the country.

jjones

4,426 posts

193 months

Friday 1st August 2014
quotequote all
Some nav software eg sky demon can give you height above ground which can be very useful

mattdaniels

7,353 posts

282 months

Saturday 2nd August 2014
quotequote all
ecsrobin said:
Unless you live in the country.
This is the CAA we're talking about - they'd cover that with "settlement" laugh