Winglets on Southwest aircraft

Does Southwest add winglets to existing aircraft through some kind of
retrofit, or do the aircraft have to be ordered from the factory with
winglets??

Sure seems like lately I'm seeing a lot more of their aircraft with the
winglets lately.

Matt

"Ender" wrote in message
newsaqbc.2578$2H4.332@clgrps12...
Matt wrote:

Does Southwest add winglets to existing aircraft through some kind of
retrofit, or do the aircraft have to be ordered from the factory with
winglets??

Sure seems like lately I'm seeing a lot more of their aircraft with the
winglets lately.

Matt

Retrofit. Westjet here in Canada is doing it too. I'm not sure if the
37's are available with the winglets or not from Boeing. I'd think so
since the BBJ has em BUT who knows the Southwest contract might be for
another company to put the kits on.

ATA flys -800's with winglets "stock," as do many others (Hapag Lloyd was
the launch for the -800 or was that the 757-300? No that was Condor...)
They've always been an option on the NG. There's now an outfit (name
escapes me) that will retrofit winglets on the classic 73's

J

In article oaqbc.2578$2H4.332@clgrps12, Ender
wrote:

Matt wrote:

Does Southwest add winglets to existing aircraft through some kind of
retrofit, or do the aircraft have to be ordered from the factory with
winglets??

Sure seems like lately I'm seeing a lot more of their aircraft with the
winglets lately.

Matt

Retrofit. Westjet here in Canada is doing it too. I'm not sure if the
37's are available with the winglets or not from Boeing. I'd think so
since the BBJ has em BUT who knows the Southwest contract might be for
another company to put the kits on.

The winglets were designed and are produced by an outfit called Aviation
Partners which originally developed them for corporate jets. Somehow,
they got Boeing to try them on the BBJ where it was found that less
noise, better fuel consumption, greater payload, greater range and/or
better climb rate was experienced.

Qantas's 737NG fleet (diverted A order) came equipped ex-factory with
them.