SA1866WE
Installation of Heathair AC-10113-1 net assembly in conjunction with pallet assemblies AC-10070-1 and AC-10347-1. (720-180C) (707-331C). Held by Heath Tecna Corporation, which holds 26 approved modifications in all. Last revised January 6, 1971. System: other and general.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 707, 720
- Type certificates
- 4A26, 4A28
- On this site
- Boeing 707 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 7, 2026.