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Jetpilot/ 727 30 Degree Flap  
User currently offlineIainhol From , joined Dec 1969, posts, RR:
Posted (16 years 7 months 1 week 2 days 8 hours ago) and read 834 times:

I know some airlines do not allow there pilots to use 40 degree of flaps as it is said to be too much. That is why on all the modern airliners they only have 30. Do you guys know of any airlines that have inserted a bar across the flap control so there is no way you can get the 40 degree? And jetpilot what are the rules with US air?

3 replies: All unread, jump to last
User currently offlineCALPilot From United States of America, joined Oct 1999, 1002 posts, RR: 13
Reply 1, posted (16 years 7 months 1 week 1 day 23 hours ago) and read 772 times:

At CO our B727's do have the block at the 40' mark.
However it could be removed for an emergency.
40 degrees can give the airplane a higher landing
weight and a lower approach speed,shorter landing
distance; but higher fuel useage, and with noise
rules, way to many decibels to be allowed. Most
domestic airlines that I know of, I belive operate
that same way for those reasons.

User currently offlineJim From United States of America, joined Jul 1999, 455 posts, RR: 1
Reply 2, posted (16 years 7 months 6 days 10 hours ago) and read 746 times:

Delta's 727s are modified as CALpilot states.

User currently offlineJETPILOT From United States of America, joined May 1999, 3130 posts, RR: 27
Reply 3, posted (16 years 7 months 6 days 10 hours ago) and read 745 times:

Our aircraft are also limited to the 30 degree flap setting. It's all due to noise abatement. The feds actually watch to make sure were not comming in at flaps 40 at aiports like LaGuardia.

The difference between Vref 40, and Vref 30 is only +5 knots. No big deal.

Good to see you back Iain.

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