There are several ways of obtaining information from the USAAC/USAAF/USAF databases. You can utilize the searchable database links below where you can enter specific search critera to obtain data matching your request. You can also use Google Site Search which will search all the USAAC/USAAF/USAF list pages below for available information, or you can simply look through the various USAAC/USAAF/USAF list pages, which lists all the reports chronologically.

USAAC/USAAF/USAF Accident Reports from 1911-1955
Non-Combat accident reports (Form 14) from 1911-1955. For combat losses see MACRs. Sometimes there are both MACRs and Aircraft Accident Reports on a loss.
USAF Accident Reports from 1956-TODAY
Modern era non-combat USAF accident reports (Form 14) from 1956-Today. AAIR doesn't have all of them but we do have several thousand available.
USAAF E & E Reports from 1942-1945
All combat USAAF escape & evasion reports from 1942-1945.
USAAF Missing Aircrew Reports from 1941-1948
USAAF MACRs which were filed after an aircraft or air crew failed to return from a WWII combat mission. AAIR maintains a database of nearly 17,000 MACR records from 1941 thru 1948. Sometimes there are both MACRs and Aircraft Accident Reports on a loss.
USAAF/USAF Aircrew Names from 1911-TODAY
USAAF/USAF aircrew names from 1911-Today. Includes those crewmembers who have been listed on an Air Force accident report. MACR names are very limited on this list. Go to the MACR database for slightly more names, but note that MACRs have yet to be indexed thoroughly. There are numerous typos, and accident reports frequently misspell names or use different spellings such as Wade and Waid, so when you look for a particular name and are unable to find it, try different combinations of spelling. Although this list contains around 260,000 names, it is by no means complete.