ST00353LA
Installation of a 3000 gallon retardant tank system. Held by Air Spray USA INC.. Last revised June 20, 2019. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Lockheed Martin Corporation; Lockheed Martin Corporation
- Models
- 188A, 188C
- Type certificates
- 4A22, 4A22
- 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.