SR01376SE
Fabrication and installation of Helicopter transport Services, LLC offset pilot seat, offset collective control, and bubble door. Held by Helicopter Transport Services LLC, which holds 27 approved modifications in all. Last revised January 9, 2014. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Helicopter Transport Services Inc.
- Models
- CH-54B
- Type certificate
- H14NM
- 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 7, 2026.