Takeoff Alternate Legalities Question
02-02-2008, 09:14 PM
#23
Gets Weekends Off
Joined APC: Dec 2007
Position: 727 VIP Left
Posts: 141
T/O mins are located on the back of the Jepp 10-9 plates & have nothing to do with your landing mins. CL & RCLM are required to reduce down to 6/6/6 with 3 RVR trans req, however 1 trans may be inop making the other 2 req & controlling. Some carriers have an exemption to get by w/o RCLM required. The starting point to detemine T/O mins would be the standard 2 eng (1mi or 5000 rvr) and 3/4 eng mins (1/2 mi or 2400 rvr). I have trained down to 5/5/5 although none of the 121 carriers I have worked for got approval to reduce mins that low. A T/O alt is required when the wx at your dep airport is below your landing mins and is not related to T/O mins, they are 2 seperate issues. The 717 can conduct single eng Cat III autolands.
02-02-2008, 10:42 PM
#24
Blue Skies
Joined APC: Aug 2006
Position: C208B
Posts: 778
Originally Posted by gijoe411
That part apparently is up to you to figure out, that's why they are called landing mins, and not taxi mins.
02-02-2008, 11:27 PM
#25
Gets Weekends Off
Joined APC: Apr 2005
Position: 737 F/O
Posts: 500
Originally Posted by Photon
Well that's kind of why I asked, I don't even fly Cat II, wanted to know what you "big guys" thought about just that...
Airports that are equipped to handle CATIII approaches such as DEN,SLC,SEA and LAX have SMGCS (Surface Movement Guidance and Control Systems).
The system is in effect anytime visibility is below 1200 RVR. The procedures have dedicated routes to get you to and from a specific runway and are charted after your 10-9 page, usually 10-9B or -9C. The system consists of green lights installed in the runway to help you exit on the high speed turnoffs. The taxiways are also equipped with the same centerline green lights to lead you to the terminal. Works quite well. At some airports you taxi with your transponder on until you reach the gate as some ATC towers are equipped with ground radar. During really low visibility you'll probably only see one or two lights as you taxi, but with a safe taxi speed you'll still get to the gate 5 early
.Hope this helps.
02-03-2008, 12:44 AM
#26
Gets Weekends Off
Joined APC: Sep 2007
Posts: 181
Originally Posted by EMB120IP
Well, sounds like the interviewers are throwing a changeup to the applicants. Technically, your takeoff minimums aren't affected by cat 1, 2 or 3 approved airports or procedures. It's all based off of company ops specs and what the airport takeoff minumums are (on airport diagram), whichever is more restrictive (if ops specs allows 600 rvr but airport diagram for a specific rwy says 1000 rvr, the lowest you can use is 1000). So it sounds like they are just manipulating a question to try to throw them off.
02-03-2008, 07:09 AM
#28
AAmerican Way for AA Pay
Joined APC: Oct 2005
Position: B-737 Pilot
Posts: 1,617
Originally Posted by showboats
Argument one is correct. If Cat III gets you down to 0/0 (not sure about that one since I'm a 135 guy...currently)
On page 259 in reference to IFR Takeoff Mins it states that FAR 121.617 requires a takeoff alternate if weather below IFR landing mins at departure airport. It goes on to break it down into aircraft with two engines or aircraft with two or more engines.
Next to that paragraph is a note stating, and I quote "The flight plan (or flight release) must specify a takeoff alternate if the weather at the airport is below landing minimums for the airport. Any landing minimums at the takeoff airport that are authorized for the certificate holder may be considered including Category II or III ILS approaches"
[91.175(f), 91.1039, 121.617, 121.619, 121.625, 121.651, 135.217, OpSpec C057 & C058 or C079]
On page 259 in reference to IFR Takeoff Mins it states that FAR 121.617 requires a takeoff alternate if weather below IFR landing mins at departure airport. It goes on to break it down into aircraft with two engines or aircraft with two or more engines.
Next to that paragraph is a note stating, and I quote "The flight plan (or flight release) must specify a takeoff alternate if the weather at the airport is below landing minimums for the airport. Any landing minimums at the takeoff airport that are authorized for the certificate holder may be considered including Category II or III ILS approaches"
[91.175(f), 91.1039, 121.617, 121.619, 121.625, 121.651, 135.217, OpSpec C057 & C058 or C079]
As always, depends on individual company SOPs, Ops Spex and GOM/FOM.
02-03-2008, 07:29 AM
#30
No one's home
Joined APC: Aug 2006
Posts: 1,091
Originally Posted by NotTooBad
I was asked this question by a Capt. who is studying for a mainline interview somewhere. The question was...what are the takeoff minimums for an aircraft certified for Cat IIIc taking off from an airport that is Cat IIIc compliant?'
And I am not aware of ANY Carrier certified IIIC.
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