March 26 (Reuters) -

Moody's Investors Service on Tuesday said it was considering

downgrading Boeing's ( BA ) "Baa2" senior unsecured rating and

"Prime-2" short-term ratings.

"Placing the ratings on review for downgrade follows

Moody's belief that Boeing ( BA ) will be unable to deliver 737

narrow-body aircraft at the volumes required for it to

materially expand its free cash flow and retire debt in a

reasonable timeframe," the agency said.

The Baa2 backed long-term revenue bond and VMIG 2 backed

short-term revenue bond, issued by the Miami-Dade County

Industrial Development Authority, were also placed on review for

downgrade.