SH7599SW
Installation of Tech-Tool forward glass door with slide window, P/N 369-3505-3 or -4. Held by Tech-Tool Plastics INC, which holds 38 approved modifications in all. Last revised May 30, 1989. System: airframe structure.
What it applies to
- Kind of product
- Aircraft
- Design holder
- MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.; MD Helicopter Inc.
- Models
- 369A (Army OH-6A), 369D, 369E, 369F, 369H, 369FF, 369HM, 369HS, 369HE, 369 (Army YOH-6A)
- Type certificates
- H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE, H3WE
- On this site
- Hughes 369 500 series helicopters 122 registered
Md Helicopters Inc 369 108 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 8, 2026.