Climb Straight Ahead

[in FACT is]

Can anyone clearify this, I just read from Jeppesen Approach chart in missed approach section now day a lot of it say "climb straight ahead to.........then.........":\

Straight Ahead in Runway track or Runway heading???? (no drift correction):ugh:

[oxenos]

Track
O Xenos

[SilentHandover]

http://www.pprune.org/atc-issues/396951-question-air-traffic-controllers.html

[AltFlaps]

Track .

[A4]

Track. Make sure the FMC programmed MA procedure is correct and engage NAV after going around. Airbus will initially follow Track made good at moment of GA - so it needs to be checked/adjusted - which is what engaging NAV will achieve.

A4

[hunterboy]

What about the USA? I gather it is HDG there?

[ab33t]

Runway hdg , track

[bfisk]

Runway hdg , track
That is completely nonsensical. :ugh:

But to answer the question: climb straight ahead means continue current track.

[RAT 5]

At some airfields in Europe, for either G.A's. or SID's I've seen it say "maintain rwy hdg". Other than that, 'straight' in my book is to maintain the ground track your were on, i.e. rwy centreline. This is more than track; you could // if you adjust the heading too late: correct airtrack but not ground track.

Also review the thread "Fly Rwy track?"

[411A]

What about the USA? I gather it is HDG there?

Track in USA unless stated otherwise.

[Intruder]

Nope. From the Pilot-Controller Glossary dated 090827:

RUNWAY HEADING− The magnetic direction that
corresponds with the runway centerline extended, not
the painted runway number. When cleared to “fly or
maintain runway heading,” pilots are expected to fly
or maintain the heading that corresponds with the
extended centerline of the departure runway. Drift
correction shall not be applied; e.g., Runway 4, actual
magnetic heading of the runway centerline 044, fly
044.

[galaxy flyer]

It means just what it says, "climb straight ahead to XXX fix". That is direct to the fix, applying drift corrections as needed. You are reading too much into it.

In the US, a controller instruction ON TAKE-OFF does mean just what it says, "fly runway heading" means fly the heading without applying drift. You are confusing missed approach with a controller instruction.

GF

[Miserlou]

I follow the extended runway centreline because that means I stay within the noise abatement protected area. The sensors don't know the rules and I want a quiet life in a different sense than the nimby's.
That is to say, I don't want a letter from the chief pilot telling me how much the fine was this time.

[biggleseat]

Absolutely right. It makes sense to me however it is not 100% clear from the following -

Extract from CAP 493

"Missed approach instructions shall include the level to which the aircraft is to climb
and, if necessary, heading instructions to keep the aircraft within the missed approach
area. The aircraft shall be instructed to contact Approach Control or, by arrangement,
to remain with the approach radar controller."

Can we have an answer/opinion) from someone from the Air traffic world please.

Also I would have thought the FMS in NAV would be better at keeping the aircraft on track than someone guessing the heading required from the Approach Room

[slatch]

With 26 years ATC in the USA I would have to agree with 411A, I would expect an automated airliner to follow the approximate track of the runway centerline due to the level of automation. I would expect and protect for a lesser equiped aircraft to drift some due to stong crosswinds based on experiance. When ATC uses runway heading on takeoff or missed approach we have more than enough protected airspace to deal with some heading issues. I would have to say I never had a situation where 30 degrees off would be a issue. If it was that close a turn would have been specified. Also remember until your radar identified the seperation standards are alot greater and that is what the clearance is based on. Once we say radar contact we have a whole lot less space to protect.

[Jumbo Driver]

biggleseat, another quote from CAP493 (http://www.caa.co.uk/docs/33/CAP493Part1adv.pdf) (Glossary / Definitions) may clarify it for you ...

Straight Ahead
When used in departure clearances means: 'track extended runway centreline'.
When given in Missed Approach Procedures means: 'continue on Final Approach Track'.

By the way, we've been exploring this topic for some time now on an adjacent thread (http://www.pprune.org/tech-log/398794-fly-runwway-track.html) ...


JD
:)

[Flaperon777]

A runway heading is just that......a HEADING!
Same as a heading given during radar vectors .All Atc controllers are well aware of a reasonable upper wind velocity.Thus their projected drift angles are quite accurate.Moreover,not all aircraft are capable of flying a runway 'track'. Thus the leniency.When asked specifically to fly a track,you will be told so.ALL conventional approaches(ie ILS etc) have missed approaches based on conventional airplane ability.Therefore when the MA says fly straight ahead it means fly rwy heading.Of course it would help immensly if you couls fly the track and wouldnt be held against u,but it certainly isn't the requirment of the day.The drift caused by winds aloft(upto 3000' Agl) have been catered for and are factored into the MA procedure.
Hope this helps...