SA00272WI
Replacement of hydraulic system pressure switch. Held by Apph Wichita INC., which holds 2 approved modifications in all. Last revised November 8, 2007. System: electrical power.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company; Cessna Aircraft Company
- Models
- R182, TR182, 172RG, 210L, 210M, 210N, 210R, P210N, P210R, T210L, T210M, T210N, T210R, 177RG, 337G, 337H, P337H, T337G, T337H
- Type certificates
- 3A13, 3A13, 3A17, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, 3A21, A20CE, A6CE, A6CE, A6CE, A6CE, A6CE
- On this site
- Cessna 172 Skyhawk 20,676 registered
Cessna 177 Cardinal 2,158 registered
Cessna 210 Centurion 1,528 registered
Cessna 337 Skymaster 370 registered
Cessna P210 Pressurized Centurion 443 registered
Cessna P337 33 registered
Cessna R182 Skylane RG 706 registered
Cessna T210 Turbo Centurion 1,283 registered
Cessna T337 193 registered
Cessna TR182 Turbo Skylane RG 465 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.