SH4939NM
Pilot-in-Command position to be in either left or right seat with fully redundant controls and control-mounted switches. Held by Heli-Conversions INC, which holds 7 approved modifications in all. Last revised May 16, 1990. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Helicopter Textron Inc.
- Models
- 205A-1
- Type certificate
- H1SW
- On this site
- Bell 205 58 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.