SP00574SE
Installation of SMR Technologies electrothermal propeller deicer P/N SMR6890 as a replacement for Safeway electrothermal propeller deicer P/N Safeway 6890 (R.333 /4-82-F/12). Held by Smr Technologies, which holds 34 approved modifications in all. Last revised March 15, 2002. System: propeller.
What it applies to
- Kind of product
- Propeller
- Design holder
- Dowty Rotol Ltd.
- Models
- R.333
- Type certificate
- P61GL
- 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 5, 2026.