FAA · Supplemental Type Certificate
STC SA4-589
Installation of Swathmaster dispensing unit.
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)
- A-743 The Boeing Company · 75 (Army PT-13)
- A-743 The Boeing Company · A75 (Army PT-13A; -13B; -13C)
- A-743 The Boeing Company · A75J1 (Army PT-18)
- A-743 The Boeing Company · A75L3
- A-743 The Boeing Company · A75L300
- A-743 The Boeing Company · A75N1 (Army PT-17; -17A; Navy N2S-1; -4)
- A-743 The Boeing Company · B75 (Navy N2S-5)
- A-743 The Boeing Company · B75N1 (Navy N2S-3)
- A-743 The Boeing Company · D75N1 (Army PT-27)
- A-743 The Boeing Company · E75 (Army PT-13D; Navy N2S-5; PT-13D/N2S-5)
- A-743 The Boeing Company · E75N1 (Army PT-13D; Navy N2S-5; PT-13D/N2S-5)
- A-743 The Boeing Company · IB75A
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗