SA893SO
Installation of exhaust silencers in accordance with Beryl D Shannon installation instructions for Part Number 2010-1, 2010-2 dated 4-2-76, and 2011, dated 4-2-76. The exhaust silencer is manufactured in accordance with Beryl D Shannon Drawing No. 2010, Rev. N/C, dated 4-2-76. Held by D'Shannon Products LTD., which holds 118 approved modifications in all. Last revised July 14, 2011. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- PA-24-260
- Type certificate
- 1A15
- On this site
- Piper PA-24 Comanche 2,428 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 20, 2026.