SR01427LA
Installation of Teledyne Battery Products G-641 and G-641S lead-acid battery. Held by Teledyne Battery Products, which holds 56 approved modifications in all. Last revised February 27, 2003. System: electrical power.
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.; MD Helicopter Inc.; MD Helicopter Inc.
- Models
- 369, 369A, 369D, 369E, 369F, 369FF, 369H, 369HE, 369HM, 369HS, 500N, 600N
- Type certificates
- H3WE, H3WE, 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
Md Helicopters Inc 500 15 registered
Md Helicopters Inc 600 11 registered
Md Helicopters Llc 369 34 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 5, 2026.