Net sales for the Engineering Services segment for the fourth quarters of 2010 and 2009 were as follows:
|Category||Q4 2010||% of Total||Q4 2009||% of Total|
|($ in millions)|
|Corporate and regional aircraft||$5.5||28.4%||$3.6||20.1%|
|Large commercial aircraft||7.2||37.1%||6.1||34.1%|
New work on a weight improvement program for a new corporate jet drove net sales for corporate and regional aircraft higher. Net sales of engineering support for large commercial aircraft grew on the 787-9 and A350, more than offsetting a decline in 747-8 billings, as the design for that plane matures. Military programs were down from the prior year, as efforts on the CH-53 helicopter ended earlier in 2010. Other sales grew due to tooling packages for the 787-9 and the Global Hawk.
Gross profit for the fourth quarter of 2010 was $11.9 million, or 21.8 percent of net sales, compared to $12.7 million, or 22.8 percent of net sales, in the prior year quarter. The Aerostructures segment generated gross profit of $8.7 million, or 24.6 percent of net sales, in the fourth quarter of 2010 versus $9.0 million, or 23.7 percent of net sales, in the fourth quarter of 2009. Fourth quarter 2010 Aerostructures segment gross margin was helped by a $0.4 million cumulative benefit on our aftermarket wing modification program but was reduced by $0.7 million of start up costs on two programs and higher than expected workers compensation costs.