FAS

Visual Aircraft Recognition Revisited

04.13.07 | 1 min read | Text by Steven Aftergood

When Secrecy News gained unauthorized access to a restricted U.S. Army manual on visual identification of U.S. and foreign aircraft, we supposed that it was just one more case of unnecessary and inappropriate secrecy.

But it turns out to be something worse than that, since the document (pdf) contains a surprising number of technical errors.

The dimensions given in the Army manual for the Predator unmanned aerial vehicle are wrong, the Entropic Memes blog astutely noted. And the entry for the B-52, among others, is likewise incorrect.

“Please,” Entropic Memes exclaimed. “If they can’t get the details of one of their own systems correct, how much faith can you have that they got the details of anyone else’s systems right?”

In this case, the secrecy of the Army manual was not just an arbitrary barrier to public access. It also “protected” numerous errors that may make the document worse than useless.

Conversely, exposing the document to public scrutiny may now make it possible to correct its errors so as to fulfill its intended purpose.

Since it was posted on the Federation of American Scientists website 48 hours ago, the Visual Aircraft Recognition manual has been downloaded over seventy thousand times, an exceptionally high rate of access.

Update: “This is not a subject I’ve so far spent a lot of time on, but the entry for every aircraft I’ve looked up in the manual thus far contains errors,” adds Entropic Memes in a new post.

publications
See all publications
Environment
Press release
Position on the Environmental Protection Agency’s Proposal to Revoke the Endangerment Finding

Yesterday, the U.S. Environmental Protection Agency proposed revoking its 2009 “endangerment finding” that greenhouse gases pose a substantial threat to the public. The Federation of American Scientists stands in strong opposition.

07.30.25 | 2 min read
read more
Emerging Technology
day one project
Policy Memo
Terminal Patients Need Better Access to Drugs and Clinical Trial Information

Modernizing ClinicalTrials.gov will empower patients, oncologists, and others to better understand what trials are available, where they are available, and their up-to-date eligibility criteria, using standardized search categories to make them more easily discoverable.

07.30.25 | 18 min read
read more
Environment
Press release
Position on the Cool Corridors Act of 2025

The Federation of American Scientists supports H.R. 4420, the Cool Corridors Act of 2025, which would reauthorize the Healthy Streets program through 2030 and seeks to increase green and other shade infrastructure in high-heat areas. 

07.29.25 | 1 min read
read more
Emerging Technology
Blog
What’s Progress and What’s Not in the Trump Administration’s AI Action Plan

The current lack of public trust in AI risks inhibiting innovation and adoption of AI systems, meaning new methods will not be discovered and new benefits won’t be felt. A failure to uphold high standards in the technology we deploy will also place our nation at a strategic disadvantage compared to our competitors.

07.28.25 | 6 min read
read more