SA3551WE
Installation of either a single or dual Global GNS-500A VLF/OMEGA navigation system and optional installation of Vandling NDB-2 navigation data bank. Held by Airesearch Aivation Service CO, which holds 157 approved modifications in all. Last revised November 23, 1981. System: instruments and avionics.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company
- Models
- BH.125 Series 400A, HS.125 Series 700A, HS.125 Series 600A, DH.125 Series 400A, DH.125 Series 3A/RA, DH.125 Series 3A/R, DH.125 Series 3A, DH.125 Series 1A, BH.125 Series 600A, DH.125 Series 1A-522
- Type certificates
- A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU, A3EU
- On this site
- Hawker Siddeley HS.125 SERIES 700A 7 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 7, 2026.