SP00879NY
Replacement of leading edge anti-erosion petals Dowty p/n 660401627 - 660401682 with Aero consulting services ltd p/n B33901-1. (R184/4-30-4/with p/n RA 25907 blades) (R193/4-30-4/ with p/n RA 25907 blades) (R212/4-30-4/ with p/n RA 25953 blades). Held by Aero Consulting Services LTD (Canada), which holds 33 approved modifications in all. Last revised November 2, 1998. System: propeller.
What it applies to
- Kind of product
- Propeller
- Design holder
- Dowty Rotol Ltd.; Dowty Rotol Ltd.; Dowty Rotol Ltd.
- Models
- R193/4-30-4/, R184/4-30-4/, R212/4-30-4/
- Type certificates
- P-899, P-899, P-899
- 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 7, 2026.