SH4547NM
Installation of a fixture for attachment of rappelling ropes under rear seat in accordance with FAA approved STC Data Package Master Drawing List , MTDC-951, Revision B, dated 10/7/97, and Rotorcraft Flight Manual Supplement for Bell Model 206B/L-1/L-3/L-4 and Model 407 with Bell 206/407 Series Helicopter Rappelling Kit , dated 11/26/97, or later FAA approved revisions. Held by Usda Forest Service, which holds 29 approved modifications in all. Last revised August 16, 2011. System: cabin, seats and restraints.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited; Bell Helicopter Textron Canada Limited
- Models
- 206B, 206L-1, 206L-3, 206L-4, 407
- Type certificates
- H2SW, H2SW, H2SW, H2SW, H2SW
- On this site
- Bell 206 JetRanger and LongRanger 1,455 registered
Bell 407 984 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.