The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SA02738CH (PAGE 3)

Installation of L-3 Communications Avionics Systems. Held by Acron Aviation INC., which holds 73 approved modifications in all. Last revised April 1, 2025. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Thrush Aircraft Inc.; Triton America LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; True Flight Holdings LLC; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Univair Aircraft Corporation; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Viking Air Limited; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; Vulcanair S.p.A.; The Waco Aircraft Company; Zenair Ltd.
Models
600 S-2D, S-2R, S2R-R1340, S2R-R3S, S2R-T11, S2R-T15, S2R-T34, 600 S-2D, S-2R, S2R-G1, S2R-G10, S2R-G5, S2R-G6, S2R-R1340, S2R-R1820, S2R-R3S, S2R-T11, S2R-T15, S2R-T34, S2R-T45, S2R-T65, S2R-T660, S2RHG-T34, S2RHG-T65, A500, AA-1, AA-1A, AA-1B, AA-1C, AA-5, AA-5A, AA-5B, AG-5B, 560-F, 680, 680-E, 680-F, 680-FL, 680-FL(P), 680-F(P), 680-T, 680-V, 680-W, 681, 685, 690, 690A, 690B, 690C, 690D, 695, 695A, 695B, 500, 500-A, 500-B, 500-S, 500-U, 520, 560, 560-A, 560-E, 700, 108, 108-1, 108-2, 108-3, 108-5, DHC-2 Mk.I, DHC-2 Mk.II, DHC-2 Mk.III, DHC-3, TR-1, DHC-6-1, DHC-6-100, DHC-6-200,...
Type certificates
A3SW, A3SW, A3SW, A3SW, A3SW, A3SW, A3SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A4SW, A00009DE, A11EA, A11EA, A11EA, A11EA, A16EA, A16EA, A16EA, A16EA, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 6A1, 6A1, 6A1, 6A1, 6A1, 6A1, 6A1, 6A1, 6A1, A12SW, A-767, A-767, A-767, A-767, A-767, A-806, A-806, A-806, A-815, A19EA, A9EA, A9EA, A9EA, A9EA, A31EU, A31EU, A31EU, A31EU, A31EU, A31EU, A31EU, A31EU, A31EU, A61EU, A61EU, ATC 542, TA5CH
On this site
Adam Aircraft Industries Inc A500 5 registered
Aero Commander 680 51 registered
Ayres Corporation S-2 244 registered
Dehavilland DHC-2 254 registered
Dehavilland DHC-6 115 registered
Partenavia S.P.A. P 68 16 registered
Thrush Aircraft Inc S-2 102 registered
Vulcanair Spa P68 10 registered
The FAA's record
On the FAA's site

What an approved modification is

A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.

Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 8, 2026.