Hello, I am looking for the following routes for the 757. Thank youEGF053 AT72 TBPB TJSJ 16000 Feet 235 kts. TBPB..BORUS.A555.FOF.A312.PPR.R888.MODUX..COY.RTE4.VEDAS..TJSJ/0222EGF052 AT72 TJSJ TBPB 17000 Feet 268 kts. TJSJ.RTE2.COY.R888.MODUX..PPR.A312.FOF.A555.TBPB/0213

I see you found my posted American Eagle plans from last month. Nice job searching for plans before asking. More people should do that!American is the only airline flying a 757 out of Barbados, but it doesn't go to San Juan. One flight goes to Miami and another goes to JFK New York.The only flights between Grantly Adams and Luis Munoz Martin are an Amerijet B72Q, American Eagle ATR72, Corporate Air EMB120, and an occasional corporate jet.Sorry. :-(

Thanks for the reply; do you believe the routes would be the same if AA did them on the 757? Thank you

I'm unable to find any jet plans between TPBP and TJSJ so I've create one for you:(FPL-AAL000-IN-B752/M-SRYW/S-TBPB1200-N0461F350 BORUS A555 FOF UA555 ILURI A555 RTE4 VEDAS-TJSJ0119 TIST-)(FPL-AAL000-IN-B752/M-SRYW/S-TJSJ1200-N0459F370 RTE2 COY A555 ILURI A555 BGI-TBPB0118 TFFF-)I hope are good.

These are great!, Thank you

I noticed yesterday that Ameriflight runs a SW4 between the islands. Forgot to mention that in the previous posting.For future reference, here is the route flown by a Gulfstream 4 and a Boeing 727Q.TBPB..FOF..ILURI.A555.COY.RTE4.VEDAS..TJSJGulfstream filed for FL450 @ 453ktsB-727 filed for FL340 @ 481kts

I noticed on these short routes there are low altitude airways, why fly so high when you have low airways? You will only be up at cruise for a short time; a perfect example of this is a flight from TAPA to TJSJ. Thank you

There are couple of things to consider:1> Not all airways have a lower and upper route. For example (made up names) you will have airway R999 and UR999, with the U signifying the jet route. If there is only a R999, then all flights will use that routing at all flight levels. The lower route does not always mean one has to fly at lower flight levels.2> The distance between TJSJ and TBPB is a 1.5 hour flight in a jet. Depending on loads and climb rate, a jet can still perform the majority of the distance at flight levels above 180. So for fuel efficiency reasons, the flight is going to be planned about FL180.3> For a shorter flight, it's a compromise between flight distance and fuel efficiency (with winds factored into the efficiency). Even if a flight cruises for only 10 minutes at a high altitude, it saves more fuel than if it flies at a lower altitude for 30 minutes.An example of #3 is your sample of TAPA-TJSJ where AAL1944 flies a B752 at FL280, but the total flight is only 56 minutes long.Bruce

>1> Not all airways have a lower and upper route. For example>(made up names) you will have airway R999 and UR999, with the>U signifying the jet route. If there is only a R999, then all>flights will use that routing at all flight levels. The lower>route does not always mean one has to fly at lower flight>levels.>So lets say I file a flight plan using R999,(assuming there is a U999 also) can I fly above FL180 in a jet? This is interesting since its a little different from the Victor and Jet airways in the US where you must stay above FL180 on the Jet airways and below on the Victor airways. Thank you

You almost have it.In the USA, as you know, there are Victor airways and Jet airways. Outside the USA, in general, the routes simply add a "U" to the lower altitude route. Also remember that transition levels differ by country, so it's possible to file for a "U" type route below FL180.In your example, assuming FL180 as the transition altitude, you would file a plan for R999 if you were staying below FL180, or file for UR999 if you are above FL180.What I mentioned in my prior post was that sometimes a UR999 does not exist, but a R999 fits the routing, so you file for R999, but at an altitude about FL180. It doesn't happen very often. Sometimes the lower airway is mentioned in the plan on the front-end or back-end of the plan when you are climbing through to the upper airway or descending into the lower airway.In the Caribbean example I gave you, the B72Q filed for an altitude above FL180, but used a lower airway since there is no upper airway along the filed route.Does that make it clearer?

Yes I understand the concept now, Thank you :-wave