Hi There Jose, Forgot to mention that there is also the EMB-145LU and EMB-145LP versions.... Anyway, let's see if I can shed some light on the subject... Basically, you have the baseline EMB-145LR and EMB-145ER versions. These are externally indistinguishable although the latter has a 43,328 lb. MTOW while the former's MTOW is pegged at 45,415 lb. The significant weight difference can be ascribed to the ER's wet wing stub, which also has higher-rated engines. Not unexpectedly, these two versions offer different field and flight performances, notably in what regards TOFL, Max cruise speed, rate of climb and range. The LR's FAR-approved maximum range with 50 pax stands at 1,270nm, as opposed to the ER's 820nm under the same conditions. I guess that is why you won't see all that many ER's stateside All other variants are derived from the two above mentioned versions and identifiable differences range from ERs that have the necessary plumbing to modify them into LRs (in this case they are EMB-145MPs), to airframes that were delivered with different galley and main cabin configurations, powerplants and sundry items. Predictably, the EMB-145EU and EMB-145EP are derived from the EMB-145ER, while the EMB-145LP and EMB-145LU are derived from the EMB-145LR All these versions (EP, ER, EU, LP, LR, LU and MP) are externally indistingushable. To make matters worse, you'll possibly note that some US-based airframes have airstairs while others do not - and both are LRs. Moreover, there are airframes that were delivered with one version of the AE3007A and over time exchanged it for higher-rated engines. God only knows what designations those airframes received - if any. At least the EMB-145XR can be recognized straightaway by its winglets, while the EMB-145RS is a remote sensoring airframe with all sorts of boondoggles, doodads and antennas sprouting from the fuselage. The EMB-145SA is very easily identified by a dorsally-mounted "canoe" that houses a phased-array surveillance radar. Yet, Embraer has deemed fit to designate the maritime patrol version of the EMB-145 as "EMB-145MP"... I guess the folks over at Marketing had it their way this time. Finally, there is also the EMB-145KE and EMB-145KL. The KE is still on the drawingboard, but I understand that the EMB-145KL is the corporate shuttle version of the regional jet. I hope that I have throughly confused you.... Cheers Jackson ----- Original Message ----- From: <B787300@xxxxxxx> To: <AIRLINE@xxxxxxxxxxxxxxxxx> Sent: Thursday, August 14, 2003 11:39 AM Subject: Re: An ERJ here, an EMB there... > Man, there's so many versions I can't keep track of them and have to look up > the tail numbers to get the model number correctly. Is there a list somewhere > of what the differences are between all the models and how one can visually > recognize the differences? This is nuts - I haven't even heard of the RS, SA, > EU, MP, EP models. > > Jose Prize > Fan of confusion > > In a message dated 8/14/2003 10:24:03 AM Eastern Daylight Time, > fubar@xxxxxxxxxx writes: > > > Subj: Re: An ERJ here, an EMB there... > > Date: 8/14/2003 10:24:03 AM Eastern Daylight Time > > From: <A HREF="mailto:fubar@xxxxxxxxxx";>fubar@xxxxxxxxxx</A> > > Reply-to: <A HREF="mailto:AIRLINE@xxxxxxxxxxxxxxxxx";>AIRLINE@xxxxxxxxxxxxxxxxx</A> > > To: <A HREF="mailto:AIRLINE@xxxxxxxxxxxxxxxxx";>AIRLINE@xxxxxxxxxxxxxxxxx</A> > > Sent from the Internet > > > > Way to go Jose... > > Especially if one considers that the EMB-145 alone has quite a few versio= > > ns such as EMB-145LR, EMB-145ER, EMB-145MP, EMB-145EP, EMB-145RS, EMB-145SA, > > EMB-145XR and EMB-145EU. And the differences cannot be described as minor > > insofar as an EMB-145SA is very much different from the EMB-145EP... > > > > Jackson Flores > > > > ----- Original Message ----- > > From: <B787300@xxxxxxx> > > To: <AIRLINE@xxxxxxxxxxxxxxxxx> > > Sent: Thursday, August 14, 2003 11:06 AM > > Subject: Re: An ERJ here, an EMB there... > > > > > > >Leave it to Marketing to foul everyone up long after the designations w= > > ere > > >assigned to each aircraft type. I'm sticking with the type certificate= > > of > > >EMB-whatever. > > > > > >Jose Prize > > >Fan of confusion > >