I guess there are people/pilots who only need to have something said once for full/permanent adoption but not me - I think these messages reinforce what I have learnt but not always continues to practice as well as I should- keep them cumming!
It can be hard to resist an intersection take off. ATC at Townsville got a bit pissed off with me when I insisted on the full runway for TO in a Piper Cherokee., but having had a failure at TO I will not cut it short.
General good practice is to use it all, and if it's long enough be prepared to act accordingly, Land on what's left.? In practice that's pretty rare option though. At least you clear the far boundary fence by a larger amount when you have a longer runway.. At Larger towered airports they pretty much expect you to use a runway that's legally suitable and you can wreck their sequencing as you are hanging around longer. Townsville is a RAAF Tower and have been known to let someone land without a clearance and then "ping" them whereas their BOYS get a "clear to land ..Check wheels" free without asking. Nev
In a fully loaded C172 I got clearance from ground to enter the main runway at Christchurch International from the Aero Club located on the opposite side to the terminal about 1/2 way down the runway. I immediately turned downwind to taxi to the end & got told in no uncertain terms by ATC to stop , turn around & go. Given the length is about 3.3 km this was fine but it was just my instinct to always go to the end of the runway. We had a laugh about it later. If I'd had an engine out there would still have been plenty of runway to land on.
Unless instructed otherwise at a towered drome you depart from the intersection you where cleared to line up from.
If the terrain at the dept end of the Rwy is not favourable for an off field landing then say 'require' full length not 'request'. ATC have to oblige but they don't have to expedite yr departure.
Remember, the controllers in the tower are there to help, but we're not mind readers. If you don't tell us what we don't know, we won't know.
One of the reasons things can go off plan for us is when what we know and what you know don't match up. So never be timid about speaking up if you're ever not comfortable with something, need some help or something just 'feels off'. I've had plenty of times where something didn't sound quite right on the radio or my spider-senses were telling me there was something amiss, so I ask questions and resolve the uncertainty (most of the time everything was fine and my feeling was wrong, but lots of times right as well...). If you're uncertain about an instruction, a taxi route for example, just say so and we'll slow it down. We'd rather prevent problems than resolve them!
This not only goes for towers but also enroute airspace as well with Centre.
Anyway, back to the point: If you want full length, just lets us know and we'll be able to work it into our plans.
While we are taught that using the full runway is the go, with a really long, one your brakes and tyres may not like miles of taxiing. IF you plane "NEEDS" a certain distance and the Intersection offers a good margin above that , maybe the old rule is not fully applicable. Make your decision on good grounds at all times. You will see some RPT's accept a downwind of a fair magnitude to take off in the departure TRACK direction sometimes at Regionals. Seeing that choice would be counter to other traffic and require much harder braking in event of an abort, I'd question the airmanship in such a decision.
'Require" means it's an operational requirement or you might "request" something for training purposes. "Require" makes it easier for the ATC to give the change. but there may still arise a question on that if something comes of it later. if it was used gratuitously. IF your destination weather deteriorates so a diversion (or holding) has NOW to be allowed for REQUIRED relates to your new endurance. An "Operational" matter. Nev
From an RPT's perspective it's mostly about commercialism, time = $$$$, GA generally takes into other considerations mainly safety from a SE standpoint. I use ALL the Rwy available at the GA level, that's the free part!
If the Queen is in residence at Windsor, which is about 5 miles south of the approach to 09L, the will route the plaes into 27 (L/R) even with a tailwind component of, I think from memory, up to 10kts - may be lower.. so as not to inconvenience her maj, even though the noise that she would get would be not terribly instrusive compared to the 10's or 100s of thousands directly under the final approach into either 27 runway.