SA01105SE
Installation of two (2) Hartzell Model HC-B3Z20-2A/10151(B)-8(R), or two (2) HC-93Z20-2C/10151(B)-8(R) propellers on the above model aircraft, per James Metzger s Document JM0001, Revision A, dated January 10, 2000, or later FAA approved revision. Held by Metzger James R, which holds 3 approved modifications in all. Last revised June 24, 2004. System: propeller.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation
- Models
- 560-E, 560-A
- Type certificates
- 6A1, 6A1
- 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 20, 2026.