Revenue during the quarter grew 8.08 percent to $875.22 million from $809.79 million in the previous year period. Gross margin for the quarter expanded 253 basis points over the previous year period to 55.34 percent. Total expenses were 60.12 percent of quarterly revenues, down from 61.34 percent for the same period last year. This has led to an improvement of 121 basis points in operating margin to 39.88 percent.

Operating income for the quarter was $349 million, compared with $313.08 million in the previous year period.

"We are pleased with our operating results for both the fiscal fourth quarter and full fiscal year," stated W. Nicholas Howley, TransDigm Group's chief executive officer, president and chairman. "Fiscal 2016 was another good year for TransDigm. Our revenues were up 17% compared to the prior year and our EBITDA as Defined was up 21%. Overall, excluding acquisitions, full year revenues were very close to our original expectations and trends in the commercial aftermarket continue to be positive. Our reported EBITDA as Defined margin was strong at 47.1% and the margins in our core businesses once again improved year over year reflecting the power of our consistent value generation strategy."

For fiscal year 2017, TransDigm Group Incorporated expects revenue to be in the range of $3,515 million to $3,565 million. It forecasts net income to be in the range of $577 million to $593 million. The company projects diluted earnings per share to be in the range of $8.51 to $8.79. The company projects diluted earnings per share to be in the range of $11.84 to $12.12 on adjusted basis.