SA1177GL

Install Aero Medical Products Mfg., Inc. Air Ambulance Stretcher P/N 125 using Installation Kit P/N 800 in accordance with Installation and Operating Instructions, Form EA 109K, dated April 23, 2001, or later FAA approved revisions. The Medical Oxygen System Kit P/N 807 is an FAA approved option. The Inverter/Pump Kit No. 812 may be installed in accordance with Inverter/Pump Installation Instructions, EA Form 170, dated June 9, 2001, or later FAA approved revisions. Held by Paul/ Lanna Egan LLC, which holds 42 approved modifications in all. Last revised September 1, 2016. System: electric propulsion.

What it applies to

Kind of product: Aircraft
Design holder: Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation; Twin Commander Aircraft Corporation
Models: 680V, 720, 690D, 690C, 690B, 690A, 690, 685, 680W, 695A, 680T, 680FL, 680-F, 680-E, 680, 681
Type certificates: 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4, 2A4
On this site: Aero Commander 680 51 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 19, 2026.