FAA · Supplemental Type Certificate
STC ST10503SC
Installation of a Universal Avionics Systems Corporation EFI-600 Flat Panel Electronic Flight Instrument system
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 (12)
- 4A25 McDonnell Douglas Corporation · DC-8-61
- 4A25 McDonnell Douglas Corporation · DC-8-61F
- 4A25 McDonnell Douglas Corporation · DC-8-62
- 4A25 McDonnell Douglas Corporation · DC-8-62F
- 4A25 McDonnell Douglas Corporation · DC-8-63
- 4A25 McDonnell Douglas Corporation · DC-8-63F
- 4A25 McDonnell Douglas Corporation · DC-8-71
- 4A25 McDonnell Douglas Corporation · DC-8-71F
- 4A25 McDonnell Douglas Corporation · DC-8-72
- 4A25 McDonnell Douglas Corporation · DC-8-72F
- 4A25 McDonnell Douglas Corporation · DC-8-73
- 4A25 McDonnell Douglas Corporation · DC-8-73F
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 ↗