FAA · Supplemental Type Certificate
STC SA2359NM
Installation of tailwheel assembly on the Cessna 180/185/188 series aircraft in accordance with XP Modifications, Inc. Master Drawing List No. 9401, Revision B, dated April 12, 1996, or later FAA approved revision.
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 (26)
- 3A24 Cessna Aircraft Company · 185
- 3A24 Cessna Aircraft Company · 185A
- 3A24 Cessna Aircraft Company · 185B
- 3A24 Cessna Aircraft Company · 185C
- 3A24 Cessna Aircraft Company · 185D
- 3A24 Cessna Aircraft Company · 185E
- 3A24 Cessna Aircraft Company · A185E
- 3A24 Cessna Aircraft Company · A185F
- 5A6 Cessna Aircraft Company · 180
- 5A6 Cessna Aircraft Company · 180A
- 5A6 Cessna Aircraft Company · 180B
- 5A6 Cessna Aircraft Company · 180C
- 5A6 Cessna Aircraft Company · 180D
- 5A6 Cessna Aircraft Company · 180E
- 5A6 Cessna Aircraft Company · 180F
- 5A6 Cessna Aircraft Company · 180G
- 5A6 Cessna Aircraft Company · 180H
- 5A6 Cessna Aircraft Company · 180J
- 5A6 Cessna Aircraft Company · 180K
- A9CE Cessna Aircraft Company · 188
- A9CE Cessna Aircraft Company · 188A
- A9CE Cessna Aircraft Company · 188B
- A9CE Cessna Aircraft Company · A188
- A9CE Cessna Aircraft Company · A188A
- A9CE Cessna Aircraft Company · A188B
- A9CE Cessna Aircraft Company · T188C
Certification basis — 14 CFR
Specific sections
- Sec. 111
- Sec. 113
- Sec. 115
- Sec. 117
- Sec. 119
- Sec. 120
The STC PDF on drs.faa.gov is the authoritative document — it lists installation instructions, ICA requirements, and any limitations. Open PDF ↗