SA534NW
Installation of wing tip fuel tanks of 17 gal. Capacity(each). Held by Sierra Industries INC, which holds 34 approved modifications in all. Last revised July 31, 2017. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.
- Models
- PA-34-200T
- Type certificate
- A7SO
- On this site
- Piper PA-34 Seneca 998 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 7, 2026.