Originally Posted by PA44
Hi Twin wasp,
maybe I'm a bit slow here, but isn't there a problem even if you hit the NDB configured already and then turn to a outbound heading of 344 +/- 5 degrees to fly a direct entry into the hold pattern like you said?
Because you can't fly a 2,5 to 3 minutes outbound leg on this heading.You're below 14.000ft here and the holding leg length should then be 1minute only as far as I know.
During your outbound leg on HDG344 you will end up east of the 344bearing from the NDB, plus you will extend the holding pattern to the north if you continue this 344 heading for 2,5 to 3 minutes so you might get quite close to the 5557ft mountain.
Not a problem if you maintain 6600ft though of course..
Maybe there is no ideal solution here, as the procedure is just not designed in a optimal
way with the huge angle from the Feeder Fix course to the NDB outbound course.
Originally Posted by Twin Wasp
You are altitude protected on the PT side. Since it is published as a PT (and not a holding pattern or teardrop) you can use whatever course reversal you want. Take a look in the Instrument Procedures Handbook under Approach and Course Reversal. You're not holding, you are doing a racetrack course reversal so none of that one minute and turn applies. You're worried about the 5557 hill. Ok, say you hit the NDB and turn on to the 344. When are you going to make your turn to 029? The only protection you have is the 6000 foot outbound altitude and TERPS builds the approach so whatever altitude they publish protects you where ever you in a sort of squashed oval anchored at the fix with the course towards one edge and the wide part of the oval where you're doing your course reversal.
Inbound from PDT, hit the overstation at the NDB, turn outbound for the course reversal, time appropriately (whatever is required in your situation to stay with 10nm), reverse course to the inbound bearing, stay above all published altitudes (TERPS has you protected from the controlling obstacle - stay within the 10 nm protected airspace of the NDB). TW nailed it.
The course divergence is well within the 120 degree max. Optimal? Depending on your view maybe not, but since the NDB is pretty restricted between PDT and ALW then those transitions from the enroute structure to the terminal structure are pretty much what you have to work with if you want an approach into KLGD.