SA01923LA
Installation of the P-1000 Digital Electronic Tachometer. Held by Horizon Instruments INC, which holds 23 approved modifications in all. Last revised January 23, 2007. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- CPAC Inc (Commander Aircraft); Helio Aircraft LLC; Maule Aerospace Technology Inc.; Maule Aerospace Technology Inc.; Mooney Aircraft Corporation; Mooney Aircraft Corporation; Navion Aircraft Company Ltd.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; Raytheon Aircraft Company; SOCATA - Groupe Aerospatiale; Univair Aircraft Corporation; Vulcanair S.p.A.; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- 114, H-295 (USAF U10D), M-4-210C, M-7-235B, M20R, M20S, Navion G, PA-18A, PA-22, PA-22-108, PA-22-135, PA-22-150, PA-22-160, PA-34-200T, A23-19, A24R, B24R, 76, GA-7, 108-3, P 68C-TC, 172C, R172K, T188C
- Type certificates
- A12SO, 1A8, 3A23, 3A23, 2A3, 2A3, A-782, 1A2, 1A6, 1A6, 1A6, 1A6, 1A6, A7SO, A1CE, A1CE, A1CE, A29CE, A17SO, A-767, A31EU, 3A12, 3A17, A9CE
- On this site
- Beechcraft A23 329 registered
Cessna 172 Skyhawk 20,676 registered
Cessna R172 Hawk XP 758 registered
Cessna T188 42 registered
Helio H-295 54 registered
Maule M-4 207 registered
Maule M-7 275 registered
Mooney M-20 6,247 registered
Navion NAVION G 61 registered
Partenavia S.P.A. P 68 16 registered
Piper PA-18 Super Cub 3,620 registered
Piper PA-22 Tri-Pacer and Colt 2,942 registered
Piper PA-34 Seneca 996 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 20, 2026.