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Who holds what · as the FAA records the name

Barbara Or Bob Williams

Named as the FAA publishes it on its approvals.

Holds 12 approved modifications, most of them for the Cessna 172 Skyhawk. FAA spelling: Barbara or Bob Williams.

Approved modifications 12 · newest first

1986-10-31SA420CE · Installation of 0-360-( ) series engines, fixed pitch and constant speed propellers · 172, 172A, 172B
1979-09-15SA1875SW · Installation of wing edge leading cuffs, wing tips, vortex generators on fuselage and fairing on vertical tails. · 336
1979-09-05SA1373SW · Installation of fairing on wing strut intersection. · 188, 188A, A188
1979-09-05SA1355SW · Installation of wing leading edge cuff to increase leading edge radius. · 188, 188A, A188
1979-09-05SA1402CE · Installation of wing stall fences and aileron gap seals. · 172M, 172N
1979-09-05SA1403CE · Installation of wing stall fences and aileron gap seals. · 182P, 182Q
1979-09-05SA1898SW · Installation of wing leading edge cuff, flow fences, optional wing tips and dorsal fin. · PA-28-140, PA-28-150, PA-28-160
1979-09-05SA596WE · Installation of Doyn Aircraft Company kit per STC SA3-571. · 172D, 172E
1979-09-05SA1420CE · Installation of wing leading edge cuffs(with or without de-icer boots) and wing stall fences. · 210N, P210N, T210N
1979-09-05SA647CE · Installation of Lycoming O-360-A1A 180 h.p. engine and constant speed propeller. · 172I, 172K, 172L
1979-09-05SA424CE · Installation of Lycoming 0-360- ( ) engine and Hartzell HC-C2YK-1N7666-2, HC-92ZK-8D/8447-12A or McCauley... · 175, 175B, 175A
1979-04-24SA944CE · Install STOL kit · 150, 150A, 150B

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, parts manufacturer approvals, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.