SR00305DE
Installation of Simplex Model 4900-010 spray system. Held by Simplex Manufacturing Company, which holds 60 approved modifications in all. Last revised August 6, 1997. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Helicopter Textron; Bell Helicopter Textron; Bell Helicopter Textron
- Models
- OH-58A+, OH-58C, OH-58A
- Type certificates
- R00006DE, R00006DE, R00006DE
- On this site
- Bell OH-58 329 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 21, 2026.