Quoting DFWHeavy (Thread starter): For example: If you have an 8,500 ft runway and you line up to take off, the first number you would typically see is "7" for 7,000 ft remaining, which means there is 1,500 ft between you and the first number. However, if you were to turn around, the last number you would see would still be "1" or 1,000 ft, but yet it would actually have to be 1,500 ft. |
Quoting DFWHeavy (Thread starter): I'm wanting to know how accurate the "1,000 ft" distance runway markers are. |
Quoting tdscanuck (Reply 1): If you turned around, wouldn't the back of that sign just be black and there be another sign on the other side at the correct location for that number? |
Quoting DFWHeavy (Thread starter): So how accurate are runway distance markers? How do you compensate for the example I listed above. Every runway that isn't exactly 6,000, 7,000, 10,000, 12,000, etc would have this problem. |
Quoting kcrwflyer (Reply 3): Well they can't be perfect... |
Quoting DFWHeavy (Reply 5): If it was "simple", then you would have 9 1/2 number.... and you don't! Think about it before responding. |
Quoting DFWHeavy (Reply 9): What I meant when I said "turn around" is, if you go to the first marker and turn around there would be a "1", but it is more than 1,000 ft. |
Quoting DFWHeavy (Reply 5): Think about it before responding. |
Quoting DFWHeavy (Reply 5): No, it isn't that simple. If you have a 9,500 ft runway, there will be 8 numbers; however, one of them has to be more than 1,000 ft apart, presumably the distance between of of the last ones and the threshold of the runway. |
Quoting DFWHeavy (Reply 11): in that they are not really all that accurate. I consider accurate withing a couple feet of 1,000. |
Quoting BMIFlyer (Reply 14): On a 9500 ft runway, the first sign will be 500 ft from the end and will be a 9 - so 9000ft remaining. The 500ft area you just started from is not really relevant..... To make it easier, count from the opposite end of the runway to where you start your takeoff roll from |
Quoting tdscanuck (Reply 1): If you turned around, wouldn't the back of that sign just be black and there be another sign on the other side at the correct location for that number? |
Quoting BMIFlyer (Reply 14): On a 9500 ft runway, the first sign will be 500 ft from the end and will be a 9 - so 9000ft remaining. |
Quoting DFWHeavy (Reply 11): Which would answer my original question, in that they are not really all that accurate. I consider accurate withing a couple feet of 1,000. |
Quoting DFWHeavy (Reply 11): Which would answer my original question, in that they are not really all that accurate. I consider accurate withing a couple feet of 1,000. |
Quoting ThirtyEcho (Reply 17): If a "couple of feet" is crucial in your takeoff then you are flying a B-25 off the deck of the Hornet in 1942. |