Aug 5 (Reuters) - Aircraft component maker TransDigm

Group ( TDG ) on Tuesday lowered its full-year revenue forecast,

as its commercial original equipment manufacturing business fell

short of the company's expectations during the third quarter.

Shares of the company, which makes cockpit security systems

and engine sensors for commercial and military jets, fell 8.6%

before the bell.

"We are decreasing our sales guidance primarily due to lower

than expected commercial OEM sales, driven mainly by lower than

anticipated OEM build rates and inventory destocking," said CEO

Kevin Stein.

While TransDigm ( TDG ) has predominantly benefited from booming

demand for repairs on older jets in recent quarters, it also

sells OEM parts to Boeing ( BA ) and Airbus.

Both the plane-makers have been grappling with supply chain

snags and labor shortages that have sent ripple effects

throughout the aerospace industry.

The industry now faces the added challenge of trade policies

that have muted growth prospects for companies globally as they

adapt to changing policies and sentiment.

The Cleveland, Ohio-based company now sees annual net sales

in the range of $8.76 billion to $8.82 billion, compared with

its prior view of between $8.75 billion and $8.95 billion -

implying a 60 million fall in the midpoint of the forecast

range.

TransDigm's ( TDG ) third-quarter revenue rose 9% to $2.24 billion

from a year ago, but fell short of analysts' expectations of

$2.29 billion, according to data compiled by LSEG.

Adjusted profit for the quarter ended June 28, rose to $9.60

per share, but missed estimates of $9.98 per share.