AviationAddict From United States of America, joined Feb 2006, 627 posts, RR: 0 Posted (8 years 8 months 2 weeks 6 days 14 hours ago) and read 6558 times:
Anyone know on average how much real estate an MD-80 needs to land safely?
I was at DCA yesterday and a DL MD-88 came in a little too hot and high and to make things worse, the departing US Express Emb 170 was still on the runway when the MD-80 flew over Gravelly Point which lies a couple hundred yards shy of the threshold. I expected the DL flight to go-around but the pilot decided to go for the landing and as a result it didn't actually touch down until it was nearly half-way down the runway (which isn't a terribly long runway to begin with). I was impressed that the pilots were able to bring the plane down to a stop without any more drama than a normal landing. I imagine they were hard on the brakes though!
A300605R From Germany, joined Nov 2005, 136 posts, RR: 0
Reply 1, posted (8 years 8 months 2 weeks 6 days 14 hours ago) and read 6532 times:
I can't prove it, but from my experience:
when landing at SCN, I always look at the touchdown zone indicators, and with JK 's and LBT 's MD80, we rolled slowly after about 5200ft (the runway has 6560ft)...
Guess 5000ft will be more than enough if the runway is dry.
PWM2TXLHopper From United States of America, joined Jan 2004, 1351 posts, RR: 1
Reply 2, posted (8 years 8 months 2 weeks 6 days 7 hours ago) and read 6420 times:
There's not really an average distance for an MD-80 or any other aircraft to land. There are a lot of variables that will determine how much runway is used including the aircraft weight, air temperature, air speed, etc.
I've seen DL MD-88s turn off at the 3,000 ft marker after landing before and I've also seen them turn off at 6,000 ft plus, so many things will determine how much runway is needed for landings.
AviationAddict From United States of America, joined Feb 2006, 627 posts, RR: 0
Reply 3, posted (8 years 8 months 2 weeks 6 days 7 hours ago) and read 6398 times:
Quoting PWM2TXLHopper (Reply 2): There's not really an average distance for an MD-80 or any other aircraft to land.
Not to be a pain, but there will always be an average, the average of the two distances you gave would be 4500 feet. Maybe I should change my words though, what is the tyipcal or normal distance under good conditions?
AA717driver From United States of America, joined Feb 2002, 1566 posts, RR: 13
Reply 4, posted (8 years 8 months 2 weeks 5 days 22 hours ago) and read 6303 times:
Yeah, if you REALLY want to split hairs, you can take the recorded landing distance (if you had that data) of every MD80 on every leg from the first flight to the last one is flown to the boneyard and get an "average".
In reality, there is no average. There is a range to expect but the variables are nearly infinite. What's the landing weight? What's the slope of the runway? Wind speed and direction (giving true headwind component)? Which airplane is it (yes, individual aircraft have distinct flying qualities)? When were the brakes overhauled and have they been abused since then? How fast do the T/R's deploy and the engines spool up (refer to the "which airplane is it" question)?