SR09345RC
Installation of Metro Aviation, Inc. BK117 dual external oxygen system. Held by Metro Aviation INC, which holds 25 approved modifications in all. Last revised September 9, 2002. System: emergency equipment.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Airbus Helicopters Deutschland GmbH; Airbus Helicopters Deutschland GmbH; Airbus Helicopters Deutschland GmbH; Airbus Helicopters Deutschland GmbH
- Models
- MBB-BK 117 A-4, MBB-BK 117 B-1, MBB-BK 117 B-2, MBB-BK 117 C-1
- Type certificates
- H13EU, H13EU, H13EU, H13EU
- On this site
- Airbus Helicopters MBB-BK 117 C-1 9 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.