SA3572SW
Installation of executive interior, air conditioning system, oxygen system, passenger and galley elevators, provisions for airstair, Class B cargo compartments, water system, and modification of electrical system. Approved for installation on 747-300 serial number 23070 ONLY. Held by Sierra Industries, INC, which holds 164 approved modifications in all. Last revised December 1, 1999. System: emergency equipment.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company
- Models
- 747-300 Series
- Type certificate
- A20WE
- On this site
- Boeing 747 192 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 22, 2026.