Jump to content
Sign in to follow this  
Andrew Tunall 900330

South Pacific Alternates

Recommended Posts

Does anyone in VATPAC know of any list of South Pacific ETOPS alternates for Tahiti, Nadi, Auckland, Sydney, and Melbourne? Any guidance would be appreciated.

 

I'm specifically looking for airports between the Hawaiian island chain and Tahiti (Kiribati?), and between Tahiti and Auckland.

 

Andrew

Share this post


Link to post
Share on other sites

Hi Andrew

 

My airline uses these for the 767-300 along or near the routes you described:

 

Between NTAA Tahiti - NZAA Auckland:

NCRG Rarotonga

NFTF Nuku'alofa (Emerg Only)

NSTU Pago Pago

NSFA Faleolo

NFFN Nadi

NWWW Noumea

YSNF Norfolk Island (Emerg Only)

 

Between Honolulu PHNL and Tahiti NTAA:

PHJR Kapolei

PHOG Kahului (Emerg Only)

PHTO Hilo

PLCH Christmas Is/C[Mod - Happy Thoughts]idy (Emerg Only)

NSTU Pago Pago

NSFA Faleolo

NTTG Rangiroa (Emerg Only)

NTTO Hao Island (Emerg Only)

NCRG Rarotonga

 

Cheers,

Will

Share this post


Link to post
Share on other sites

Will, much thanks for the great reply, I will use these in my flightplanning for the Oceania reason from now on! On a side note, are there any web charts available for any of the Emergeny airports you listed? I've tried finding them for places like Christmas Is., only to fail. Secondly, is there any reason places like PHOG are Emergeny Only, while others with shorter runways are not?

 

Thanks,

 

Andrew

Share this post


Link to post
Share on other sites

No worries Andrew.

 

Many factors are involved in selecting appropriate enroute 'normal' alternates versus emergency-only alternates - some include:

 

- fuel availability

- ground handling availability

- military restrictions (eg the various US Pacific atoll military bases and installations)

- pavement strength limitations

- apron space

 

etc

 

Therefore whilst all airports listed might be technically suitable for an aeroplane to land at in a one-off emergency, some airports (the non -'emerg' ones) are preferred by the company where the situation isn't absolutely critical.

 

Hope this helps!

 

Will

Share this post


Link to post
Share on other sites

Will, thanks for the reply once again! Are these all ETOPS 120 rated alternates? Or are some of these ETOPS 180 (777) rated alternates? It seems like some of the American Somoa destinations are a bit far away for ETOPS 120 ratings. In this circomestance, with an aircraft like the 767-300ER, does a place like PHOG switch to a regular alternate? I can recognize Christmas Island being a normal one ... it has neither the staff, nor the facilities, to handle anything but an absolute emergency situation.

 

Andrew

Share this post


Link to post
Share on other sites

Hi Andrew,

 

The above airports I listed are just approved alternates 'in the area' of the routes you mentioned - not all of them are neccessarily within ETOPS time (which is 180minutes for our 767-300GEs). To calculate ETOPS distance in still air, we multiply 180mins by the single engine cruise speed (the 767-300GE uses 430kts TAS), to give the maximum distance our route may go from an enroute alternate at any one time - in this case, 1,290nm in still air.

 

If you can find an old enroute chart of the area, a useful method of checking this would be to draw, using a comp[Mod - Happy Thoughts], 1,290nm range circles on each enroute alternate airport listed above (but not the emerg ones, which can't be used for ETOPS, but can be used in a dire emergency!). In order to check that your planned route is ETOPS180-compliant, verify that at all times it lies within at least one of these circles. If it doesn't, you'll need to adjust the route so that all sections remain within a circle. Whilst inflight, you an put each of your ETOPS airports in the 'Fix' page as your flight progresses, and check that at no time are you more than 1,290nm from the nearest alternate.

 

I fly the 744 which doesn't have ETOPS considerations, so I'm not as 'up' on it as I once was. Nonetheless, the concept is reasonably straight-forward, especially with new aeroplanes such as the 777 achieving record ETOPS times (200 mins ++) by virtue of their high reliability. That said, we regularly fly across the Pacific, and there's an area roughly halfway between Pago Pago-Tahiti and Los Angeles at which point you're at least 3 hours from the nearest alternate - not somewhere I'd like to be in an engine-out twin

 

Fire away with any other questions - I have all the material here to look it up from.

 

Cheers, Will

Share this post


Link to post
Share on other sites

Please sign in to comment

You will be able to leave a comment after signing in



Sign In Now
Sign in to follow this  

×
×
  • Create New...