FAA · Supplemental Type Certificate
STC ST456CH-D
Installation of AlliedSignal Aerospace TFE731-3D-1H or TFE731-3DR-1H Turbofan Engine(s).
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 (19)
- A3EU Hawker Beechcraft Corporation · BH.125 Series 400A
- A3EU Hawker Beechcraft Corporation · BH.125 Series 600A
- A3EU Hawker Beechcraft Corporation · DH.125 Series 1A
- A3EU Hawker Beechcraft Corporation · DH.125 Series 3A
- A3EU Hawker Beechcraft Corporation · DH.125 Series 3A/RA
- A3EU Hawker Beechcraft Corporation · DH.125 Series 400A
- A3EU Hawker Beechcraft Corporation · HS.125 Series 1B
- A3EU Hawker Beechcraft Corporation · HS.125 Series 3B
- A3EU Hawker Beechcraft Corporation · HS.125 Series 3B/RA
- A3EU Hawker Beechcraft Corporation · HS.125 Series 400A
- A3EU Hawker Beechcraft Corporation · HS.125 Series 400B
- A3EU Hawker Beechcraft Corporation · HS.125 Series 400B/1
- A3EU Hawker Beechcraft Corporation · HS.125 Series 600A
- A3EU Hawker Beechcraft Corporation · HS.125 Series 600B
- A3EU Hawker Beechcraft Corporation · HS.125 Series 600B/1
- A3EU Hawker Beechcraft Corporation · HS.125 Series 600B/2
- A3EU Hawker Beechcraft Corporation · HS.125 Series 600B/3
- A3EU Hawker Beechcraft Corporation · HS.125 Series 700A
- A3EU Hawker Beechcraft Corporation · HS.125 Series 700B
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
- § 21.47
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗