Richard Poulton
Analyst · Wedbush
Okay. Thanks, David, and good morning, everyone. As is customary, I'd like to provide some more detail on the performance in each of our operating segments, and then I'll conclude with some comments around interest, depreciation and CapEx.
So as David mentioned, within our Supply Chain segment, sales increased 12% compared to the year-ago period. We saw an increased demand from our airline customers, mainly due to strong inventory positions that we had built up earlier in the year. Sales also increased during the period due to increasing sales under our Unison distribution agreement, which we had launched earlier this year. As we look ahead, we feel pretty good about our current inventory positions, and we exited the quarter with February being our strongest month yet from the Unison agreement. So we are encouraged by our momentum there.
We also reported solid improvement in the gross profit margin in the Supply Chain segment, which increased to 19.8% in the quarter compared to 17.3% last year. This is our strongest margin performance in several years, and it reflects the favorable mix of inventories sold, particularly, around our engine parts business. In part, because of the recent Airbus Military win that David just mentioned, we made the decision to retain the Amsterdam component repair business, which had previously been reported as a discontinued operation. As a result, the operating results for Amsterdam were reported in continuing operations for all periods presented and will continue as such going forward. This change of classification had an insignificant impact on the year-over-year comparisons.
In the Government and Defense Services segment, sales and gross profit margin declined due to the reasons David mentioned related to our Airlift business and our Defense Logistics business. It's important to reiterate that the weakness we experienced in the quarter at our Airlift business is not indicative of a reduction in demand for our services. Rather, this is a result of executional challenges that we are aggressively addressing.
In our MRO segment, sales increased 4% compared to the prior year, but again, as David indicated, this was due to a difficult year-over-year comparison stemming from our Engineering Services business. If we exclude the effect of Engineering Services, the year-over-year growth was a strong 13%, very similar to what we experienced in our Supply Chain segment.
While the gross profit margin was a disappointing 11.8% compared even to our last quarter, this was really the result of some onetime charges we took related to our Miami Aircraft Services business. The pricing environment remains very constructive, and demand remains strong for our MRO services, and we expect meaningful improvement in gross margins in Q4.
In our Structures and Systems segment, sales increased 86% year-over-year. Excluding the impact of the acquisition of Telair and Nordisk, sales increased 20%, primarily due to higher shipments at our Mobility Products unit, which had a very soft third quarter last year. As we indicated in our release, Telair and Nordisk contributed $55 million in sales during the period, which exceeded our expectations for these new businesses.
The gross profit margin in the Structures and Systems segment of 18.2% was up over 375 basis points from where we were for the first half of this year. This reflects the strength of the new businesses, which more than offset the continuing weakness we experienced with our precision business. On an absolute dollar basis, this segment was our largest profit contributor during the quarter.
SG&A as a percent of sales was 9.6% in the third quarter, which was essentially unchanged from a year ago. In total, our earnings before interest, taxes, depreciation and amortization, including the amortization of stock-based compensation, was $61 million for the quarter. This was up 17% from the year-ago period.
In January, we had completed the offering of $175 million aggregate principal amount of notes, which have a stated coupon of 7 1/4%. Proceeds from the offering were used to repay a portion of the borrowings under our revolving credit agreement, which we incurred to fund the Telair and Nordisk acquisitions. With the result of this capital raise, we now feel very good about our liquidity position.
Net interest expense for the quarter was $10.1 million, which was up from $7.5 million last year. The cash interest expense was $6.7 million of this total, and the noncash portion of the interest expense was $3.4 million. We generated $13.4 million in cash flow from operations during the third quarter, while CapEx, excluding the acquisitions, was approximately $7.5 million, and our depreciation and amortization for the quarter was $21.6 million.
As David mentioned, during the quarter, we recorded a $4 million income tax benefit, which primarily related to reduction in the company's state income tax rate on our net deferred tax position. The benefit was driven by recently implemented tax planning strategies around our corporate structure and the relocation of one of our significant businesses. There will be an ongoing benefit to state taxes as a result of these actions, but as we mentioned in our release, our effective tax rate should be approximately 34.5%.
I'll wrap up my comments by reiterating David's message. Our quarter had a mix of some very positive results, as well as some disappointments. Our largest disappointments were around Airlift and Precision where their results fell approximately $0.10 per share short of what we would consider to be their expected contribution. We believe our action plans will be effective at addressing this underperformance as we continue to execute them throughout the fourth quarter.
So with that, thanks for joining our call this morning, and we'll now open up the line for some questions.