SA2278WE
Installation of Brownline cargo container Model 41013. (720-22C) (707-323C). Held by Brooks & Perkins, INC, which holds 29 approved modifications in all. Last revised May 16, 1975. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company; McDonnell Douglas Corporation; McDonnell Douglas Corporation
- Models
- 707, 720, DC-8F-55, DC-8F-54
- Type certificates
- 4A26, 4A28, 4A25, 4A25
- On this site
- Boeing 707 9 registered
Douglas DC-8 6 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.