SA00857CH
Installation of McCauley Propeller Model B3DF36C526/80HJA-0 and B3DF36C527/L80HJA-0, spinner assembly and optional de-icer. Held by Mccauley Propeller Systems, which holds 66 approved modifications in all. Last revised September 23, 2005. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.
- Models
- PA-31-325, PA-31-350, PA-31
- Type certificates
- A20SO, A20SO, A20SO
- On this site
- Piper PA-31 Navajo and Chieftain 935 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 5, 2026.