ST02985AT-D
Installation of replacement fuel tank sealant system consistent. Held by Ffc Manufacturing, which holds 86 approved modifications in all. Last revised April 16, 2009. System: fuel system.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Hawkins & Powers Aviation Inc.; Heavy Lift Helicopters Inc; LeSEA; Snow Aviation International Inc.; USDA Forest Service; Western International Aviation Inc.; Central Air Service Inc.
- Models
- C-130A, C-130A, C-130A, C-130A, C-130A, C-130A, C-130A
- Type certificates
- A30NM, A31NM, A34SO, TQ3CH, A15NM, A33NM, A39CE
- On this site
- Lockheed C-130 Hercules 18 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.