SA1045WE
Installation of door-mounted inflatable evacuation slides in accordance with United Air Lines Approved Drawing List COA 6-3072/COA 6-3087. United Air Lines Supplemental Revision No. 1 dated August 25, 1965, to Douglas Airplane Flight Manual SM-19501, or Supplemental Revision No. 1 dated June 10, 1966, to Douglas AFM SM-19544 is required. Held by United Airlines INC, which holds 520 approved modifications in all. Last revised November 30, 2011. System: emergency equipment.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- DC-6
- Type certificate
- A-781
- 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.