Based on the aggregated intelligence of 160,000-plus investors participating in Motley Fool CAPS, the Fool's free investing community, US Airways (NYSE: LCC) has received the dreaded one-star ranking.

With that in mind, let's take a closer look at US Airways' business and see what CAPS investors are saying about the stock right now.

US Airways facts

Headquarters (Founded)

Tempe, Az. (1981)

Market Cap

$1.2 billion

Industry

Airlines

Trailing-12-Month Revenue

$10.7 billion

Management

Chairman/CEO William Parker (since 2005)
CFO Derek Kerr (since 2005)

Return on Capital (Average, Past 3 Years)

(2.4%)

Compound Annual Revenue Growth (Over Past 3 Years)

(3%)

Cash/Debt

$1.5 billion / $4.6 billion

1-Year Return

136%

Competitors

AMR (NYSE: AMR)
Delta Air Lines
Southwest Airlines (NYSE: LUV)

Sources: Capital IQ (a division of Standard & Poor's) and Motley Fool CAPS.

On CAPS, 45% of the 763 members who have rated US Airways believe the stock will underperform the S&P 500 going forward. These bears include JestYourFool and DJDynamicNC.

Just last month, JestYourFool explained why people are steadily starting to get airsick:

Airlines are adding too many fees, taking away "comforts" like food and blankets, and don't care about customers. Many people are flying only when absolutely necessary. Cars and trains are cheaper and you're not sitting on the tarmac in a sardine can for 5 hours!

In a pitch from one day later, DJDynamicNC also tapped the stock as a good bet to descend soon:

Rising oil prices, the reinvigoration of the bullet train movement, ever-growing environmental concerns, and the threat of terrorism all pose significant risks to US Airways business model, even singly. Together, they represent an almost overwhelming threat.

Further, US Airways has shown a hearty willingness to simply pass the costs on to their consumer rather than innovate their way to better business practice. While I do not rule out the possibility of a change in corporate strategy and style, I have seen little to give me confidence in US Airways growth rate. ... [The] long term picture isn't good, certainly not as good as the S&P 500 as a whole.

What do you think about US Airways, or any other stock for that matter? If you want to retire rich, you need to protect your portfolio from any undue risk. Staying away from dangerous stocks is crucial to securing your financial future, and on Motley Fool CAPS, thousands of investors are working every day to flag them. CAPS is 100% free, so get started!

Fool contributor Brian Pacampara owns no position in any of the companies mentioned. Southwest Airlines is a Motley Fool Stock Advisor pick. The Fool's disclosure policy always gets a perfect score.