SA665NW
Installation of forward facing white lights (100 watts) clear plastic wing tip tank nose cone, and associated systems. Held by Knots 2U LTD., which holds 28 approved modifications in all. Last revised October 9, 2015. System: electrical power.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Piper Aircraft Inc.; Piper Aircraft Inc.; Piper Aircraft Inc.
- Models
- PA-31T, PA-31T1, PA-42
- Type certificates
- A8EA, A8EA, A23SO
- On this site
- Piper PA-31 Navajo and Chieftain 935 registered
Piper PA-42 59 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 22, 2026.