SA8106SW
Installation of Collins Dual-86U EFIS, Dual Air Data ADC-85, Autopilot Flight Director-Collins APS-85, LTN-92 INS, Sundstrand Mark VII GPWS (Windshear disabled), also including 3-axis flight control system, pitch rate cutout, and other modifications. Held by Dee Howard CO, which holds 2 approved modifications in all. Last revised November 26, 1996. System: flight controls.
What it applies to
- Kind of product
- Aircraft
- Design holder
- McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation; McDonnell Douglas Corporation
- Models
- DC-8-73, DC-8-71, DC-8-71F, DC-8-73F
- Type certificates
- 4A25, 4A25, 4A25, 4A25
- On this site
- 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.