The U.S. aircraft register, updated daily
Parts

Main Shaft

0 failure reports named the main shaft in the last ten years, 8 since 1997. 5 FAA approvals let 4 companies make a replacement main shaft, Reabe Aircraft Products LLC holding the most (2). The reports call it "main shaft", "main shaft nut".

Reports by year

0246881997
Reports by year, as a table
reports
19978

Approved replacement parts 5 parts manufacturer approvals

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

For these models most: Air Tractor Inc AT-802 (2), Air Tractor Inc AT-602 (2), Air Tractor Inc AT-504 (2), Air Tractor Inc AT-502 (2), Air Tractor Inc AT-402 (2), Air Tractor Inc AT-400 (2), Thrush Aircraft Llc S2 (1), Thrush Aircraft Inc S-2 (1), Sikorsky S-58 (1), Boeing 777 (1), Ayres Corporation S-2 (1).

MakerPartReplacesFitsGrantedStatus
Reabe Aircraft Products LLCMain Shaft 7.5” 38” Gate 8-7-3-3808-7-3-380Thrush Aircraft LLC S2R-G10, S2R-G5, S2R-T342023-12-18current
Reabe Aircraft Products LLCMain Shaft 7.5” 38” Gate 8-7-3-3808-7-3-380Air Tractor Inc AT-400, AT-400A, AT-4022023-12-18current
Reabe Aircraft Improvement INCMain Shaft 7.5”38” Gate 8-7-3-380Modification PartAir Tractor AT-400, AT-400A, AT-4022021-05-12current
Sonic Industries INCMAIN SHAFT 451W4156-8451W4156-8Boeing 777-200 SERIES, 777-300 SERIES2006-05-15current
Airwolf Aerospace LLC (Formerly Airwolf Helicopter)Main Shaft and Plug Assy., Transmission System-Main Transmission S1635-20059S1635-20059Sikorsky S-58A, B, S-58C2000-10-04current

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.