The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Aeronautical Testing Service INC.

Named as the FAA publishes it on its approvals.

Holds 23 approved modifications, most of them for the Cessna 421 Golden Eagle. FAA spelling: Aeronautical Testing Service Inc..

Approved modifications 23 · newest first

2006-03-31SA00487SE · Fabrication of a vortex generator system. · 441
2001-05-18SA00165SE · Installation of 76 vortex generators and 2 small delta wings on the upper surface of the wings. · 182P, 182R, 182S
2000-10-26ST00049SE · Installation of vortex generators on wings and vertical stabilizers. · 310, 310A, 310B
1998-05-14SA00512SE · Fabrication of a vortex generator system. · 182, 182A, 182B
1998-03-26SA00074SE · Installation of vortex generator system on the wing and vertical stabilizer of these aircraft · 421B
1997-08-13SA00015SE · Installation of a vortex generator system on wing and vertical tail. · 421C
1997-08-07SA00458SE · Fabrication and installation of vortex generators mounted on wings. · 620, 620TP, 620B
1997-05-22SA00278SE · Fabrication and Installation of vortex generators and 'delta wings' mounted on airplane wings, and strakes mounted... · PZL M18, PZL M18A, PZL M18B
1997-05-22SA00198SE · Fabrication and installation of vortex generators and 'delta wings' mounted on the wings and strakes mounted above... · AT-401, AT-401A, AT-401B
1997-04-24SA00151SE · Fabrication and Installation of vortex generators and "delta wings" on the wings and a strake mounted above the... · AT-300, AT-301, AT-302
1996-11-20SA00390SE · Fabrication and installation of vortex generators and delta wings mounted on wings, and strakes mounted above left-... · AT-502, AT-502B, AT-503A
1996-10-22SA00200SE · Fabrication and installation of vortex generators and 'delta wings' on the wings. · DHC-2 Mk.I
1996-05-29SA00147SE · Installation of vortex generators mounted on the wings and (optional) 'split flaps' mounted on lower trailing edge... · A188B, 188B, T188C
1996-05-27SA00149SE · Installation of vortex generators and 'delta wings' on the wings and a strake mounted above the left- and right-hand... · 600 S-2D, S2R-R1340, S2R-R3S
1996-04-19SA00329SE · Installation of vortex generators on wings and vertical stabilizer. · 421A, 421
1995-11-09SA5672NM · Installation of a vortex generator system together with a 5% takeoff weight increase. · 414A
1995-01-20SA5163NM · Installlation of vortex generators on the wing and vertical stabilizer. · T310R, 310R
1994-11-18SA00148SE · Installation of vortex generators on the wing. · PA-36-285, PA-36-300, PA-36-375
1994-08-12SA00109SE · Installation of vortex generators on the wing and vertical stabilizer and "split flaps", mounted on the lower... · PA-34-200T, PA-34-220T
1994-06-17SA5757NM · Installation of vortex generator system on wing and vertical stabilizer. · 320D, 320E, 320F
1994-06-13SA5756NM · Installation of vortex generator system to wing and vertical stabilizer. · 310Q, 310L, 310K
1993-01-29SA5900NM · Installation of a vortex generator system to improve low speed performance. · 401, 401A, 401B
1992-11-24SA5673NM · Installation of a vortex generator system together with a 5% takeoff weight increase. · 402C

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.