Title: Northrop YA-9A

The Northrop YA-9A was developed in response to a USAF request for a dedicated Close Air Support/ground attack aircraft. Northrop and Fairchild Republic were the two companies selected to build prototypes for a fly-off competition. The Northrop entry was designated YA-9 while the Fairchild aircraft was designated YA-10.

The first flight of the YA-9A was on May 30, 1972, and the fly-off competition ran between Oct. 10 and Dec. 9, 1972. The Air Force subsequently selected the A-10 as the winner of the contest on Jan. 18, 1973. The two prototype YA-9As were transferred to NASA for flight testing before being retired and preserved in Museums.

To maximise value, this title contains the flight manuals for the YA-9A and the later F-20A. Both have been scanned from good quality photocopies.



This title contains:

  • Manufacturers Development Program Flight Manual for the A-9A, DPM A-9A-1 dated 1-9-72 revised to 24-10-72, with approx 186 pages.
  • Manufacturers Utility Flight Manual for the F-20A, serial numbers GI001 (N3986B) and GI002 (N4467I), NTM 1F-20A-1 dated 15-4-84, with approx 266 pages.