The U.S. aircraft register, updated daily
Parts

Tailwheel Spacer

No failure report names the tailwheel spacer. 4 FAA approvals let 1 company make a replacement tailwheel spacer, Univair Aircraft CORP holding the most (4).

Approved replacement parts 4 parts manufacturer approvals

A parts manufacturer approval (PMA) lets a company other than the aircraft's maker make a tailwheel spacer and sell it as an approved part for the models named. These are the companies holding such approvals for a tailwheel spacer:

For these models most: Piper PA-20 Pacer (2), Piper PA-19 (2), Piper PA-18 Super Cub (2), Piper PA-16 Clipper (2), Piper PA-14 (2), Piper PA-12 Super Cruiser (2), Taylorcraft BC12 BC-12D (1), Taylorcraft BC-65 (1), Taylorcraft BC (1), Piper PA-25 Pawnee (1), Piper PA-17 Vagabond (1), Piper PA-15 (1).

MakerPartReplacesFitsGrantedStatus
Univair Aircraft CORPTailwheel Spacer U3227A-0003227, Piper 753 406American Champion 7AC, 7BC, 7CCM2006-09-20current
Univair Aircraft CORPTailwheel Spacer U1478A-000Scott 1478, Piper 750 363Luscombe 8, 8A, 8B2006-09-20current
Univair Aircraft CORPTailwheel Spacer U2504A-001Piper 756 209Piper PA-12, PA-14, PA-162006-01-03current
Univair Aircraft CORPTailwheel Spacer U2504A-0012504-1Swift Museum GC-1A, GC-1B, BC2006-01-03current

Sources: the FAA's service difficulty reports since 1995 (a report is a part that failed and was fixed, as filed by an airline, repair station or owner; the count shows reporting as much as reliability) and the parts manufacturer approvals in the FAA's Dynamic Regulatory System. The part name is the reporters' and the approval holders' own words, reduced to the first plain words so that spellings meet.