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

ST01930LA

Installation of Sandel Avionics SN4500 Electronic Horizontal Situation Indicator (EHSI). Held by Sandel Avionics LLC, which holds 7 approved modifications in all. Last revised June 23, 2021. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Bombardier Inc.; Bombardier Inc.; British Aerospace Regional Aircraft; British Aerospace Regional Aircraft; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Dassault Aviation; Dassault Aviation; Dassault Aviation; Dassault Aviation; Dassault Aviation; Dassault Aviation; Dassault Aviation; Gulfstream Aerospace Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Hawker Beechcraft Corporation; Israel Aircraft Industries Ltd.; Israel Aircraft Industries Ltd.; Israel Aircraft Industries Ltd.; Israel Aircraft Industries Ltd.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Learjet Inc.; Lockheed Martin Corporation; M7 Aerospace LP; M7 Aerospace LP; M7 Aerospace LP; M7 Aerospace LP; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Mitsubishi Heavy Industries Ltd.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Sabreliner Corporation; Sabreliner Corporation; Sabreliner Corporation; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC; Twin Commander Aircraft LLC
Models
CL-600-1A11 (CL-600), CL-600-2A12 (CL-601), Jetstream Series 3101, Jetstream 3201, 500, 550, 560, S550, Falcon 10, Mystere-Falcon 50, Fan Jet Falcon, Mystere-Falcon 20 - C5, Mystere-Falcon 20 - D5, Mystere-Falcon 20 - E5, Mystere-Falcon 20 - F5, G-159, 65-90, 65-A90, B90, C90, C90A, E90, 100, A100, B100, MU-300, 400, MU-300-10, 200, 200C, 200T, 300, B200, B200C, B200T, F90, BH.125 Series 600A, DH.125 Series 1A, DH.125 Series 1A/S-522, DH.125 Series 3A, DH.125 Series 3A/RA, DH.125 Series 400A, HS.125 Series 600A, HS.125 Series 700A, HS.125 Series F400B, 1121, 1121A, 1124, 1124A, 24, 24A,...
Type certificates
A21EA, A21EA, A21EU, A56EU, A22CE, A22CE, A22CE, A22CE, A33EU, A46EU, A7EU, A7EU, A7EU, A7EU, A7EU, 1A17, 3A20, 3A20, 3A20, 3A20, 3A20, 3A20, A14CE, A14CE, A14CE, A14SW, A16SW, A16SW, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A24CE, A31CE, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A2SW, A2SW, A2SW, A2SW, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A10CE, A5CE, 2A15, A5SW, A5SW, A5SW, A5SW, A10SW, A10SW, A10SW, A10SW, A10SW, A10SW, A10SW, A10SW, A2PC, A2PC, A2PC, A2PC, A2PC, A23SO, A23SO, A23SO, A8EA, A8EA, A8EA, A2WE, A2WE, A2WE, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4
On this site
Beechcraft 100 14 registered
Beechcraft 200 King Air 200 249 registered
Beechcraft 23 147 registered
Beechcraft 300 King Air 300 131 registered
Beechcraft 35 Bonanza and Debonair 1,077 registered
Beechcraft 36 Bonanza 111 registered
Beechcraft 400 Beechjet 311 registered
Beechcraft 65 201 registered
Beechcraft A100 15 registered
Beechcraft B100 58 registered
Beechcraft B200 King Air B200 715 registered
Beechcraft B90 29 registered
Beechcraft C90 King Air C90 607 registered
Beechcraft E-90 King Air E90 146 registered
Beechcraft F90 107 registered
Bombardier CL-600 Challenger and CRJ 1,655 registered
Cessna 500 Citation I 62 registered
Cessna 550 Citation II 500 registered
Cessna 560 Citation V, Ultra, Encore and Excel 1,344 registered
Cessna S550 94 registered
Dassault/Sud FAN JET FALCON 24 registered
Dassault FALCON 10 57 registered
Dassault MYSTERE FALCON 20-F5 12 registered
Dassault MYSTERE-FALCON 50 90 registered
Gulfstream Am Corp Comm Div 690 26 registered
Gulfstream Am Corp Comm Div 695 18 registered
Hawker Siddeley HS.125 SERIES 700A 7 registered
Israel Aircraft Industries 1124 73 registered
Learjet 35 161 registered
Lockheed 1329 6 registered
Mitsubishi MU-2 177 registered
Mitsubishi MU-300 17 registered
North American NA-265 10 registered
Piper PA-31 Navajo and Chieftain 934 registered
Piper PA-42 59 registered
Swearingen SA227 31 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 26, 2026.