SA2298WE
Modification of Bendix master brake cylinder by installation of Griffco Aviation piston and O-rings in lieu of Bendix piston assembly P/N 52152. Held by Griffco Aviation. Last revised January 7, 1971. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Grumman American Aviation Corporation; Noorduyn Aviation Ltd.
- Models
- G-21A, Army UC-64A
- Type certificates
- 654, A-2-578
- On this site
- Grumman G-21 35 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.