SP829SO
Vibration approval for single engine tractor installations only, on P & W Model P985-AN-1, -AN-3, -AN-14B, -25, -27, -39A, T1B2 and T1B3 engines. (2D 30/6101A-10S). Held by Metropolitan Propeller Repair, INC, which holds 5 approved modifications in all. Last revised February 20, 1976. System: propeller.
What it applies to
- Kind of product
- Propeller
- Design holder
- Hamilton Standard Division
- Models
- 2D
- Type certificate
- P-206
- 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.