What happened Shares of Triumph Group Inc. (NYSE: TGI) fell as much as 18.9% in trading Wednesday after the aviation and industrial company reported fiscal first-quarter earnings. At 12:05 p.m. EDT, the stock was still down 17.7% on the day. So what Revenue fell 12.5% to $781.7 million and the company swung from a net income of $19.7 million a year ago to a loss of $1.9 million, or $0.04 per share. On an adjusted basis, which pulls out one-time costs like restructuring, earnings were $0.24 per share. Image source: Getty Images. Analysts were expecting revenue of $808.6 million and earnings of $0.87 per share, so you can see why investors were shocked by the results. Now what Management said that the decline in results was due to the end of two legacy programs and that ongoing operations are improving as new programs grow. For the full fiscal year, it expects revenue of $3.1 billion to $3.2 billion with adjusted earnings of $2.25 to $2.75 per share. If results hold steady and the company hits the high end of earnings, the price-to-earnings ratio of under 10 times is an attractive level for investors. But I'd like to see revenue at least stabilize before jumping in. 10 stocks we like better than Triumph GroupWhen investing geniuses David and Tom Gardner have a stock tip, it can pay to listen. After all, the newsletter they have run for over a decade, Motley Fool Stock Advisor, has tripled the market.* David and Tom just revealed what they believe are the 10 best stocks for investors to buy right now... and Triumph Group wasn't one of them! That's right -- they think these 10 stocks are even better buys. Click here to learn about these picks! *Stock Advisor returns as of July 6, 2017Travis Hoium has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.