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Using GS,when not aligned with LOC (vis)

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Mar, the problem in Kotz was not a base leg entry, the problem was a right base to a runway with a left hand pattern. There is nothing which prohibits a left base entry to a left pattern, you may not however enter a left pattern on a right base.

NTSB order

Notice the regulation cited is 91.89(a) which is the predecessor regulation to 91.126 and 91.127. 91.89(a) essentially said all turns to the left unless it's a right pattern.

The crew would have been on solid legal ground if they had done the same thing from the opposite direction.
 
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Interesting document.

AA--I've never seen that document before.

Why were they making a *right* hand turn? They were approaching Rwy 26, correct?

Coming from either OME or ANC that's a *left* turn.

Either way, I'm not sure I agree a left turn would've left them on solid legal ground.

From the document: <<respondent's right-hand turn was made between 1 and 2 miles from the runway, it could not be considered a straight-in approach. NTSB Order EA-3523, at 7-9. It is introduced to show that: 1) a B-737 can "easily be established on a straight-in approach" within that distance (Petition at 9); and 2) that distance is consistent with B-737 requirements for circling approaches.>>

To me that reads like they're trying to prove a final of 1 to 2 miles is acceptable because the 737 is approved to circle at that distance--regardless of the direction.
 
Re: Interesting document.

mar said:

Why were they making a *right* hand turn? They were approaching Rwy 26, correct?


Not according to my understanding of the incident. Every discussion I've ever heard of this describes them doing a right base for RWY 8. The NTSB order doesn't explicitly state which runway was being used, but it does state repeatedly that the issue is a right turn to final. That, coupled with the fact that that the flight was almost surely arriving from either Anchorage or Nome, strongly suggests to me that it was RWY 8, as I have been previously lead to believe. Surely you'll agree that it would be awkward and inconvenient, at best, and have no operational advantage to position the airplane for a right base turn to final for Rwy 26, if arriving from either Anchorage or Nome?

Here's the issue as I understand it:

There is no question that it's illegal to fly a right hand pattern to a runway with a left hand pattern. The question is "how far out does a right turn to final stop being "right hand pattern" and become a "straight in approach".

lets take a look at a couple of hypothetical scenarios.

If you had two airports 50 miles apart and the runways were perfectly aligned, and you took off from one and flew a perfectly straight path to the other and landed straight in, you could not be found in violation of 91.89(a). 91.89(a) prohibits right turns, and you didn't make any turns, so the facts don't support a violation of 91.89(a).

Now, suppose that you made a right turn onto final for your landing runway 50 miles from the runway. Does that right hand turn constitute a violation of 91.89(a)? Clearly, that is absurd, and no one, not even the FAA, claims that a right turn to final 50 miles from the airport constitutes a right hand traffic patern.

So the question becomes, at what point does a right turn to final become a violation of 91.89(a) (now 91.126 (a) and (b) and 91.127(a) by reference) ?

If you turn right onto final 25 miles from the airport is that a straight in approach or a right pattern?

10 miles?

5 miles?

2 miles?

Obviously, at some point it becomes a right pattern and not a straight in approach.

In according to the order, the right turn to final "was made between 1 and 2 miles from the runway" This is apprently not disputed by the respondent.

As I understand it, the FAA argued and the NTSB held that a right turn to final must be made at least 5 miles from the airport to be considered a straight in, rather than a right pattern.

mar said:
Either way, I'm not sure I agree a left turn would've left them on solid legal ground. ?

Yes, a left turn would have left the captain with an absolute, bulletproof defense against a violation of 91.89(a). In order to violate 91.89(a) there must be a right turn. (or a left turn to a runway with a right pattern) Without a right turn, the FAA has no case for a violation of 91.89(a).

Now, your position is that a left base entry to a left pattern is not allowed. Perhaps perhaps not. I'm not conceding that point, but the NTSB case we've discussed sheds no light on that issue. That case centers around 91.89(a) which is completely irrelevant to the question of whether a left base entry to a left pattern is allowed. As long as you are making turns to the left you are in compliance with 91.89(a), or in the context of today's regulations, with 91.126 and 91.127.

So, in order to sustain a violation for a a left base entry, what regulation is going to be cited? There is no regulation which prohibits such an entry. There is only the AIM's recomendation. The only regulation which might be applicable is 91.13, careless or reckless operation. So we enter a grey area. There is no precedent I am aware of which establishes that failure to follow the AIM recommendations is, per se, careless or reckless. The FAA must demonstrate that such an action, is in fact, careless or reckless.

Could the FAA sucessfully argue that a left base entry is careless or reckless? Perhaps, if there were other supporting facts; failure to use proper radio procedures, conflict with other traffic, something like that, I'd say yes.

If you flew a left base entry and there were no traffic conflicts, you made all the recommended radio calls, and did everything corecctly, I think that the FAA would have a hard time justifying a careless or reckless finding against you on the sole basis that you didn't enter on a 45 to the downwind.

Food for thought: Entering the downwind on a 45 is, per se, a violation of 91.126 or 91.127 as applicable. You can't enter on a 45 without making a right turn, and you are only allowed to make left turns.
 
AA and Mar. Seems like old times. Good posts gentlemen. It's about time we got into a relevent aviation discussion.

8N
 
I don't know about you, my friend,...

...but I've had *way* too much time on my hands lately. Way too much sittin' around on reserve.

But I'm about ready to leave for the banana belt (I got a 1700 DLG/AKN).

:cool:

<<Food for thought: Entering the downwind on a 45 is, per se, a violation of 91.126 or 91.127 as applicable. You can't enter on a 45 without making a right turn, and you are only allowed to make left turns.>>

Listen, that was very funny. You'd make an excellent lawyer.

But back to the OTZ incident. My only memory of the whole thing was an article written about six years ago. Apparently some important facts were omitted because the only thing I took from that article was the FAA was bustin' their balls for announcing straight in but turning a two mile final.

The main thrust of the article was that's fine if you're flying a single engine Cessna but turbine powered transport aircraft should be established on final much farther out--like 5 or 6 miles.

I think if you hooked a right turn to final 8-10 miles out and announced a straight in there would be no problem with that.

There's always room for exceptions but that's why we use our best judgement--and that's why we get paid the big bucks, right?!?

Not to repeat myself but if I had a Fed on board I'd be taking things real slow and professional.

There's no reason to hook a two mile final let alone make a right hand turn.

I'm sure we agree. I think I just needed to explain why I used the example I did and where some of my misconceptions came from.

Fly safe!

[Editted to acknowledge 8N's comment. I agree. Thanks for saying so.]
 
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your_dreamguy said:
We were coming in on base (we never did a downwind entry, so I never saw the runway) and I had the hardest time picking up the runway and runway lights. Subconiously, I stayed high. As I got closer, I ended up high and fast. We landed the plane but we nearly had to do a go-around and the Capt. was pissed. On the ground, the capt said he had put in the ILS freq. in my radio (and he did do that) as backup. He told me that I could have used the GS indications on base leg to get a good feel for descent and proper altitude on base (even though, we were not aligned with the LOC) because we were going visually.
Well it is technique, but there are rules in the AIM and you also have which Part you're operating under as well as your operations specifications your carrier is working under to consider as to whether this is legal or not. In Part 121 at my airline, what you did is most definitely not legal.

Now you must at all times have the airport in sight to do a visual approach. If you started this approach on the base without the runway in sight, you're not legal.

If you're on base and you don't have the runway in sight, ask the Captain if he has it. If he does, transfer control to him. But don't let an old fart make you do something that isn't legal. In this case you should have brought it to his attention that you didn't have the field, and if he's up on his stuff, he'll take the plane.

Is there PCL at this field? If so, always click up the lights (7 clicks in three seconds) to make sure they stay lit during your approach. You can always step them down as you fly towards it. If it was controlled, ask the tower to turn them up (usually they'll go so bright you'd wish you hadn't asked- but at least you'll have the field).

Next question, how far down did you land? That may not have been legal either. Remember, if you land a perfect 10 but it's 5,500 feet down a 6000 foot runway, you will flunk the course.

Finally, about using the G/S when off the LOC, you can use it to back up a solid visual, but it is not reliable. I'd rather do some quick math in my head and have some numbers at hand for targets based on the navaids available. Your landing starts in cruise. Remember, prior proper planning prevents piss poor performance.

Rule of thumb that will never get you in trouble: don't start down the slope until you're on the LOC. Otherwise, you're not in protected airspace when IFR. VFR, YOU take responsibility for obstacle clearance -and if you think I'm going to trust a wavering G/S needle, you're dead wrong.

But don't do what this Captain says and think that it's always going to work. Take everything you hear with a grain of salt, test it, keep what is good and throw away the rest. You can learn something from every Captain you fly with. Some you learn how to be, from others you learn how not to be.
 
Many glide slopes ”bends down” outside the coverage area and will place you too low. This have caused accidents.
 

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