joker Posted July 2, 2007 Report Share Posted July 2, 2007 (edited) Ok, quick question here (due to early morning brain fart), Are there any other rules (other than Aircraft Lights 91.209) which are predicated on the times of 'Sunset to Sunrise'? Or do all other such regulations* go by the definition of night, which is the end of civil twilight to the begining of civil dawn (same as FAA's morning civil twilight - FAR1.1)? *Notwithstanding the recurrency requirements (61.57) Thanks, Joker Edited July 2, 2007 by joker Quote Link to comment Share on other sites More sharing options...
HelliBoy Posted July 2, 2007 Report Share Posted July 2, 2007 (edited) Night means the time between the end of evening civil twilight and the beginning of morning civil twilight,- as published in the American Air Almanac, converted to local time - FAR Part 1 91.205© Visual flight rules (night). For VFR flight at night, the following instruments and equipment are required: (1) Instruments and equipment specified in paragraph ( of this section. (2) Approved position lights. (3) An approved aviation red or aviation white anticollision light system on all U.S.-registered civil aircraft. Anticollision light systems initially installed after August 11, 1971, on aircraft for which a type certificate was issued or applied for before August 11, 1971, must at least meet the anticollision light standards of part 23, 25, 27, or 29 of this chapter, as applicable, that were in effect on August 10, 1971, except that the color may be either aviation red or aviation white. In the event of failure of any light of the anticollision light system, operations with the aircraft may be continued to a stop where repairs or replacement can be made. (4) If the aircraft is operated for hire, one electric landing light. (5) An adequate source of electrical energy for all installed electrical and radio equipment. (6) One spare set of fuses, or three spare fuses of each kind required, that are accessible to the pilot in flight. The PALISS memory aid works good- P-osition lightsA-nticollision lightsL-anding LightI-nstruments for VFR day..SOFATACOSS-ource of powerS-pare fuses As far as I can tell there arent any Regs. other than the position light requirement for Civil Twilight times Edited July 2, 2007 by HelliBoy Quote Link to comment Share on other sites More sharing options...
joker Posted July 2, 2007 Author Report Share Posted July 2, 2007 (edited) Heliboy, Well, done, but READ MY QUESTION. Joker Edited July 2, 2007 by joker Quote Link to comment Share on other sites More sharing options...
HelliBoy Posted July 2, 2007 Report Share Posted July 2, 2007 Heliboy, Well, done, but READ MY QUESTION. Joker Thanks, but read my response...is there such thing as too much information?? As far as I can tell there arent any Regs. other than the position light requirement for Civil Twilight times Quote Link to comment Share on other sites More sharing options...
joker Posted July 2, 2007 Author Report Share Posted July 2, 2007 (edited) As far as I can tell there arent any Regs. other than the position light requirement for Civil Twilight times! That's all I wanted to know, thanks. Pretty familiar with 91.205 already, ta! BTW, your added sentence (quoted above) didn't come up on my email. (First draft only I presume.) Hence my last post. Cheers, Joker Anyone else? Edited July 2, 2007 by joker Quote Link to comment Share on other sites More sharing options...
ironranger Posted July 2, 2007 Report Share Posted July 2, 2007 You have to make 3 landings and take-offs one hour after sunset to one hour before sunrise to carry passengers at night. ironranger Quote Link to comment Share on other sites More sharing options...
C of G Posted July 2, 2007 Report Share Posted July 2, 2007 (edited) So, Joker, it begs the question, "why?" Sorry, I know my post isn't of much use. Edited July 2, 2007 by C of G Quote Link to comment Share on other sites More sharing options...
Witch Posted July 2, 2007 Report Share Posted July 2, 2007 I still hadn't figured out the civil twilight thingy yet. Later Quote Link to comment Share on other sites More sharing options...
joker Posted July 2, 2007 Author Report Share Posted July 2, 2007 (edited) Thanks, Ironranger. *Notwithstanding the recurrency requirements (61.57) C of G, Why do I ask?Long time no hear! Ok, well I was having a discussion with pilot here about whether we could use a 'day vfr-only' routing after sunset. There is no night VFR where I fly. It's either special vfr or IFR (similar to UK). It seems I lost this one, because I said that the civil twilight thing was only from a logbook point of view, and that actual 'flight' regulations were normally effective at sunset (as in position lights). I was trying to find other rules, which might come effective at sunset (not end of civil twilight), and then compare the FAA regs to the local regs here, and other regs around the world. (South Africa use SS+15 as their cutoff.) I guess I was clutching at straws trying to build my case. Actually, when I put my mind to it, I couldn't think of any rules (other than 209) which use SS / SR. So I must go back to other pilot eating humble pie now! Does that make any sense? Joker Edited July 2, 2007 by joker Quote Link to comment Share on other sites More sharing options...
HelliBoy Posted July 2, 2007 Report Share Posted July 2, 2007 (edited) I still hadn't figured out the civil twilight thingy yet. Later Civil twilight is the time after sunset or before sunrise when a sufficient amount of the sun's light is reflected by the atmotsphere to allow for essentially day VFR flight...day VFR flight meaning ability to pilot the a/c with direct visual reference to the ground and ablility to see clouds and obstructions, the lights aid in a/c visiblity. Dont quote me but I've read or heard somewhere that its the time the sun is <6 degrees below the horizon. Edited July 2, 2007 by HelliBoy Quote Link to comment Share on other sites More sharing options...
Gomer Pylot Posted July 3, 2007 Report Share Posted July 3, 2007 Twilight. I don't have time to search for every reference to sunrise/sunset in the FARs. You could go here and use the search function. Quote Link to comment Share on other sites More sharing options...
HelliBoy Posted July 3, 2007 Report Share Posted July 3, 2007 There is no night VFR where I fly without asking you to take off the superhero costume...where is that?..just curious Quote Link to comment Share on other sites More sharing options...
Witch Posted July 3, 2007 Report Share Posted July 3, 2007 I wonder how he looks in spandex? Quote Link to comment Share on other sites More sharing options...
delorean Posted July 3, 2007 Report Share Posted July 3, 2007 Civil Twilight is when the sun is less than 6 degrees BELOW the horizon. Astronomical and Nautical Twilight are 18 & 12 degrees below the horizon. http://aa.usno.navy.mil/data/docs/RS_OneYear.html Here's a link to a engine that produce a one year table for the Sunset/Sunrise, Moonset/Moonrise, and Civil Twilight tables for any city in the county. I keep a copy of the Civil Twilight table in our duty log book for logging night flights. Typically civil twilight begins at ~30 minutes after sunset and ends ~30 minutes before sunrise. Quote Link to comment Share on other sites More sharing options...
Jeff Posted July 3, 2007 Report Share Posted July 3, 2007 I had a reply all figured out, but then I read delorean's post. So diito what he said. One other place I've seen the word "night" used is with certain airports, i.e. Aspen, CO, and Put-In-Bay, OH. Takeoffs and landings are prohibited at night. So when is "night"? I would go to the link delorean provided and find out before I got arrested or fined. Jeff Quote Link to comment Share on other sites More sharing options...
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