SH12CE
Replace existing engine induction air filter with AC Spark Plug Filter. Held by Brackett Aero Filters INC., which holds 4 approved modifications in all. Last revised June 2, 2000. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron; Brantly International Inc.; Robinson Helicopter Company; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Schweizer Aircraft Corporation; Rogerson Hiller Corporation
- Models
- 47J, 47J-2, 47J-2A, 47G-2A, 47G-2A-1, 47G-3, 47G-3B, 47G-3B-1, 47G-3B-2, 47G-2, B-2B, R22, 269A, 269A-1, 269B, 269C, UH-12E
- Type certificates
- 2H1, 2H1, 2H1, 2H3, 2H3, 2H3, 2H3, 2H3, 2H3, H-1, 2H2, H10WE, 4H12, 4H12, 4H12, 4H12, 4H11
- On this site
- Bell 47 477 registered
Brantly B-2 53 registered
Hiller UH-12 217 registered
Hughes 269 300 series helicopters 207 registered
Robinson R22 817 registered
Schweizer 269 300 series helicopters 212 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 19, 2026.