FAA · Supplemental Type Certificate
STC ST01085WI
Installation of Honeywell MK VIII Enhanced Ground Proximity Warning System (EGPWS) (with/without optional Avidyne Flight Max 800 MFD).
What is an STC?
A Supplemental Type Certificate authorizes a major modification or alteration to an FAA-certificated aircraft. STCs are how operators legally install new avionics, change fuel systems, add floats, swap engines, etc. — every change beyond a minor modification needs one.
Applicable aircraft (16)
- A3EU Beechcraft Corporation · BH.125 Series 400A
- A3EU Beechcraft Corporation · BH.125 Series 600A
- A3EU Beechcraft Corporation · DH.125 Series 400A
- A3EU Beechcraft Corporation · HS.125 Series 400B
- A3EU Beechcraft Corporation · HS.125 Series 400B/1
- A3EU Beechcraft Corporation · HS.125 Series 401B
- A3EU Beechcraft Corporation · HS.125 Series 403A(C)
- A3EU Beechcraft Corporation · HS.125 Series 403B
- A3EU Beechcraft Corporation · HS.125 Series 600A
- A3EU Beechcraft Corporation · HS.125 Series 600B
- A3EU Beechcraft Corporation · HS.125 Series 600B/1
- A3EU Beechcraft Corporation · HS.125 Series 600B/2
- A3EU Beechcraft Corporation · HS.125 Series 600B/3
- A3EU Beechcraft Corporation · HS.125 Series F400B
- A3EU Beechcraft Corporation · HS.125 Series F403B
- A3EU Beechcraft Corporation · HS.125 Series F600B
Specific sections
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗