Boeing P-12

The Boeing P-12/F4B was an American pursuit aircraft that was operated by the United States Army Air Corps and United States Navy.

Design and development

Boeing developed the aircraft as a private venture to replace the Boeing F3B and Boeing F2B with the United States Navy, the first flight of the P-12 took place on 25 June 1928. The new aircraft was smaller, lighter and more agile than the ones it replaced but still used the Wasp engine of the F3B. This resulted in a higher top speed and overall better performance. As result of Navy evaluation 27 were ordered as the F4B-1, later evaluation by the United States Army Air Corps resulted in orders with the designation P-12. Boeing supplied the USAAC with 366 P-12s between 1929 and 1932. Production of all variants totalled 586.

Operational history

P-12s were flown by the 17th Pursuit Group (34th, 73rd, and 95th Pursuit Squadrons) at March Field, California, and the 20th Pursuit Group (55th, 77th and 79th Pursuit Squadrons) at Barksdale Field, Louisiana. Older P-12s were used by groups overseas: the 4th Composite Group (3rd Pursuit Squadron) in the Philippines, the 16th Pursuit Group (24th, 29th, 74th, and 79th Pursuit Squadrons) in the Canal Zone, and the 18th Pursuit Group (6th and 19th Pursuit Squadrons) in Hawaii.

P12

P12 or P–12 may refer to:

Cryptography

Education

Military

Transportation

K–12

K–12 (spoken as "k twelve", "k through twelve", or "k to twelve") is a term for the sum of primary and secondary education. It is used in the United States, Canada, South Korea, Turkey, the Philippines, Egypt, Australia and Iran. P–12 is also occasionally used in Australia. The expression is a shortening of kindergarten (K) for 4- to 6-year-olds through twelfth grade (12) for 17- to 19-year-olds, the first and last grades of free education in these countries, respectively. Also called ELHI, as a short for elementary to high school.

Usage

The term is often used in school website URLs, generally appearing before the country code top-level domain (or in the United States, the state top-level domain). The term "PK–12" is sometimes used to add pre-kindergarten.

It is also used by American multinationals selling into the educational sector, such as Dell where UK customers are presented with this as a market segment choice.

P–12

In Australia, P–12 is sometimes used in place of K–12, particularly in Queensland, where it is used as an official term in the curriculum framework. P–12 schools serve children for the thirteen years from prep until Year 12, without including the separate kindergarten component. In Canada (Nova Scotia) P–12 is used commonly in place of K–12 and serves students from grade Primary through 12.