Goldman Sachs initiated coverage of the airline sector with a neutral rating, but the firm singled out

AMR

(AMR)

and

UAL

( UAUA) for buy ratings.

AMR is the parent of American Airlines, and UAL owns United Airlines.

Jetblue

(JBLU) - Get Report

,

Hawaiian Holdings

(HA) - Get Report

,

Alaska Air

(ALK) - Get Report

,

Continental

(CAL) - Get Report

and

US Airways

(LCC)

were started with neutral ratings.

Low-fare carrier

Southwest Airlines

(LUV) - Get Report

got the worst of it, getting a sell rating from Goldman.

Separately, regional carrier

Mesa Air

(MESA) - Get Report

was downgraded to neutral from add at Calyon, and the firm cut its price target by $1 to $9.