SR00813SE
Fabrication and installation of Columbia Helicopters pylon fittings P/N C54S2022-1 and -2 for replacement of Sikorsky fittings P/N 6420-66341-101 and -102 at the transition of fuselage to the tail boom. Held by Columbia Helicopters INC, which holds 66 approved modifications in all. Last revised June 9, 2000. System: rotorcraft systems.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Sikorsky Aircraft Corporation
- Models
- CH-54A Sikorsky
- Type certificate
- H40NM
- On this site
- Helicopter Transport Services CH-54 5 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.