SE00022EN
Installation of Oil Tank Filler Neck Check Valve. Held by Helicopter Support INC Services Div, which holds 13 approved modifications in all. Last revised January 30, 2004. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.
- Models
- PT6B-36, PT6B-36A, PT6T-3, PT6T-3A, PT6T-3B, PT6T-6, PT6A-66, PT6A-67, PT6A-67A, PT6A-67R
- Type certificates
- E21NE, E21NE, E22EA, E22EA, E22EA, E22EA, E26NE, E26NE, E26NE, E26NE
- 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 5, 2026.