SA3846NM
Modification to the flap control system to provide a maximum landing flap of 40 degrees in the normal case and an optional stop in the flap position quadrant to restrict the full landing position to 40 degrees. Held by Airborne Express Air INC, which holds 10 approved modifications in all. Last revised April 24, 2013. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- McDonnell Douglas Corporation
- Models
- DC-9-30 Series
- Type certificate
- A6WE
- On this site
- Mcdonnell Douglas DC-9 93 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 20, 2026.