An emb-145 approach iah from the west was told to fly an arrival which began near msy for weather; b...

Narrative:

ZHU ARTCC gave us new routing prior to takeoff (at the hold short line of the runway.) we inputted the new data into the FMS and it checked out. During climb; we discussed why ATC wanted us to join an arrival all the way over new orleans; since we were to the west of houston. We discussed whether to divert. I made the suggestion that we should just tell ATC that the reroute is not good due to fuel; and see if we can get a route similar to our planned route. After getting clearance to do a new route; which was originally our planned route; ATC then started vectoring the rest of the air traffic on 'our' route. Interestingly; if we did divert for fuel; and then ended up doing the planned route; we would have to have gone in a hold due to being over-weight. The main threat and error was due to not realizing; until after takeoff; that due to only taking enough fuel for the planned trip; we could not safely do the re-route. The FMS calculated that by flying past iah to new orleans; and then back to iah; we would land with 800 pounds of fuel.I suggest dispatch plan for the aircraft to carry more fuel; or houston ARTCC getting more familiar with the new arrivals and departures which seem to be still causing traffic flow/confusion for the airspace.

Original NASA ASRS Text

Title: An EMB-145 approach IAH from the West was told to fly an arrival which began near MSY for weather; but because of fuel the crew would have had to divert. ATC did modify the route preventing the divert.

Narrative: ZHU ARTCC gave us new routing prior to takeoff (at the hold short line of the runway.) We inputted the new data into the FMS and it checked out. During climb; we discussed why ATC wanted us to join an arrival all the way over New Orleans; since we were to the West of Houston. We discussed whether to divert. I made the suggestion that we should just tell ATC that the reroute is not good due to fuel; and see if we can get a route similar to our planned route. After getting clearance to do a new route; which was originally our planned route; ATC then started vectoring the rest of the air traffic on 'our' route. Interestingly; if we did divert for fuel; and then ended up doing the planned route; we would have to have gone in a hold due to being over-weight. The main threat and error was due to not realizing; until after takeoff; that due to only taking enough fuel for the planned trip; we could not safely do the re-route. The FMS calculated that by flying past IAH to New Orleans; and then back to IAH; we would land with 800 LBS of fuel.I suggest Dispatch plan for the aircraft to carry more fuel; or Houston ARTCC getting more familiar with the new Arrivals and Departures which seem to be still causing traffic flow/confusion for the airspace.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

Attributes
ACN	1182732
Time
Date	201406
Local Time Of Day	1201-1800
Place
Locale Reference	ZHU.ARTCC
State Reference	TX
Environment
Light	Daylight
Aircraft 1
Make Model Name	EMB ERJ 145 ER/LR
Operating Under FAR Part	Part 121
Flight Phase	Climb
Flight Plan	IFR
Person 1
Function	First Officer Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types Deviation - Procedural Clearance Deviation - Procedural Published Material / Policy Inflight Event / Encounter Fuel Issue

An emb-145 approach iah from the west was told to fly an arrival which began near msy for weather; but because of fuel the crew would have had to divert. ATC did modify the route preventing the divert.