Type Record · As of May 3, 2026
RYAN AERONAUTICAL ST-A
Fixed Wing Single Engine · MENASCO PIRATE C4 D4
Registered
23
Year Range
1935–1939
NTSB Events
9
Airworthiness Directives
0
01 / Distribution
Where the fleet lives and was built
Counts of currently-registered RYAN AERONAUTICAL ST-A aircraft by US state and decade of manufacture, sourced from the FAA Aircraft Registry.
By State (top 10)
- CA 26.1% 6
- GA 8.7% 2
- MO 8.7% 2
- PA 8.7% 2
- WA 4.3% 1
- TN 4.3% 1
- CO 4.3% 1
- MT 4.3% 1
- OR 4.3% 1
- KS 4.3% 1
+5 more states
By Decade of Manufacture
- 1930s 78.3% 18
- Unknown 21.7% 5
02 / NTSB Records
Events involving RYAN AERONAUTICAL ST-A aircraft
9 event(s) on file. Showing the most recent 9.
-
Jun 26, 1993
N14987FRESNO, California
NTSB Docket → -
May 30, 1987
N14954MARIPOSA, California
NTSB Docket → -
Aug 10, 1985
N17351VERSAILLES, Missouri Fatal
NTSB Docket → -
Nov 6, 1979
N14985PHOENIX, Arizona
NTSB Docket → -
Jul 7, 1969
N17352ACKLEY, Iowa
NTSB Docket → -
Apr 26, 1969
N14954ANTIOCH, California Minor
NTSB Docket → -
Aug 1, 1966
N14985SCHENECTADY, New York
NTSB Docket → -
May 31, 1965
N18923OLYMPIA, Washington Serious
NTSB Docket → -
Sep 26, 1964
N18923WHIDBEY IS, Washington
NTSB Docket →
02c / Academic Research
Scholarly work mentioning RYAN AERONAUTICAL ST-A
Papers and reports across NASA, NTSB, FAA CAMI, AOPA ASI, Embry-Riddle, arXiv, and the broader academic graph that mention this airframe. Title or keyword match — drill into each for full abstract + author list + PDF link.
- arXiv 2016 · arXiv preprint
The mixed-phase version of moist-air entropy
The aim of this note is to derive the mixed-phase version of the moist-air entropy potential temperature $θ_s$ derived in Marquet (2011).
- arXiv 2014 · arXiv preprint
On the computation of moist-air specific thermal enthalpy
The specific thermal enthalpy of a moist-air parcel is defined analytically following a method in which specific moist entropy is derived from the Third Law of thermodynamics.
- arXiv 2019 · arXiv preprint
Application of the second law to the atmosphere: impacts of the third-law definition for the moist-air entropy
Calculations of entropy fluxes and production rate have been evaluated with some success to study atmospheric processes. However, recurring questions arise as to how best to take into account entropy …
- arXiv 2026 · arXiv preprint
Behaviour-aware Hybrid Architecture for Trust-driven Transmissions
Reliable and secure communication is essential for mission-critical aerospace and defence operations involving autonomous platforms such as Unmanned Aerial Vehicles (UAVs), satellites, and ground cont…
- Semantic Scholar 2023 · Article (BMC Public Health)
Effectiveness of elastic band training and group-based dance on physical-functional performance in older women with sarcopenia: a pilot study
Background Sarcopenia is a syndrome associated with aging that causes progressive loss of skeletal muscle mass and muscle function.
- arXiv 2021 · arXiv preprint
AdaptSky: A DRL Based Resource Allocation Framework in NOMA-UAV Networks
Unmanned aerial vehicle (UAV) has recently attracted a lot of attention as a candidate to meet the 6G ubiquitous connectivity demand and boost the resiliency of terrestrial networks.
Browse the full corpus — academia portal ↗
03 / Airworthiness Directives
FAA directives applicable to RYAN AERONAUTICAL ST-A
No matching airworthiness directives are on file for this make and model in the Federal Register.
04 / Type Certificate Data Sheets
FAA TCDS for RYAN AERONAUTICAL ST-A
The TCDS is the legal certification document — weight limits, performance, equipment, AD compliance times, operating limitations. 2 matches in the FAA catalog.
- ATC 681 Current Rev 0 ·
Ryan Aeronautical Company
Models: ST-A Special
- ATC 571 Current Rev 0 ·
Ryan Aeronautical Company
Models: ST-A
06 / Supplemental Type Certificates
Modifications approved for RYAN AERONAUTICAL ST-A
28 STCs on file — every FAA-approved modification, alteration, or installation for this aircraft. STOL kits, avionics, fuel systems, floats, engine swaps, you name it.
-
05/17/2024
STC SA4503NM (PAGE 1)
Remove original cloth covering and install Ceconite covering
Ceconite Division of Poly-Fiber Inc.
-
09/09/2022
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
-
09/09/2022
STC SA4503NM (PAGE 1)
Install Ceconite covering material.
Ceconite Division of Poly-Fiber Inc
-
05/18/2022
STC SA04776NY (2 OF2)
The HIPEC Covering and Finishing System must be performed and maintained
HIPEC Aircraft Coatings Inc.
-
10/14/2016
STC SA01734SE (PG 3)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Andrew D. Humphrey
-
06/10/2015
STC SA01734SE (PG 3)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Stewart Thomas D. and Stewart Dan R.
-
06/04/2015
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/10/2012
STC SA00478CH
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
10/19/2011
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
09/14/2011
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
03/23/2011
STC SA01734SE (PG 3)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Stewart Thomas D. and Stewart Dan R.
-
02/25/2011
STC SA4503NM (Page 1)
Install Ceconite covering material.
Ceconite Division of Poly-Fiber Inc
-
02/01/2010
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
09/18/2009
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
06/26/2009
STC SA01734SE (PG 3)
Application of Stewart Systems synthetic fabric covering system to aircraft fuselage, wings, tail surfaces, control surfaces and related parts.
Stewart Thomas D. and Stewart Dan R.
-
05/15/2009
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/23/2008
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
05/14/2007
STC SA00478CH (PAGE 2)
Installation of Cooper Superflite 102 Fabric.
Aviation Products Systems Inc.
-
07/08/2005
STC SA00680SE (2 OF 6
Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.
Electronics International
-
11/09/2003
STC SA8075SW (PAGE 3)
Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER)
Razorback Fabrics Inc
-
05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc.
-
05/27/2003
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber Inc
-
06/14/2002
STC SA1364GL
Surrendered and incorporated into STC SA00478CH.
Cooper Aviation Supply Company, Inc.
-
03/09/1999
STC SA00680SE (2 OF 6
Installation of Electronics International model UBG-16 or UBG-16T bar graph engine analyzer.
Electronics International
-
03/31/1997
STC SA8075SW (PAGE 1)
Installation of fiberglass covering. (M-62 SERIES PT-19) (G-73 SCHWEIZER)
Razorback Fabrics Inc
-
03/09/1993
STC SA1626NM Page 2
Installation of Electronics Int'l Digital EGT/CHT Instruments and accessories. (201 Series)
Electronics International
-
10/06/1992
STC SA1008WE
Installation of Poly-Fiber covering material.
Poly-Fiber, Inc
-
10/13/1989
STC SA4302NM (PAGE 2)
Installation of Electronics Int'l digital automatic engine analyzer.
Electronics International
04 / Regulations watching this type
Advisory Circulars and Federal Register activity for RYAN AERONAUTICAL ST-A
Advisory Circulars
No ACs explicitly mention this type. Showing universal operating-rule ACs that apply to all aircraft.
Recent Federal Register activity
Latest rulemakings touching general operating rules (Part 91) and maintenance rules (Part 43).
- 2026-04-17 Settlement Policy for Small Unmanned Aircraft System (UAS) Cases FR ↗
- 2026-02-10 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period; Denial of Extension FR ↗
- 2026-02-02 25-Hour Cockpit Voice Recorder (CVR) Requirement, New Aircraft Production FR ↗
- 2026-01-28 Normalizing Unmanned Aircraft Systems Beyond Visual Line of Sight Operations; Reopening of Comment Period FR ↗
- 2026-01-07 Requirements for Interference-Tolerant Radio Altimeter Systems FR ↗
05 / Aircraft of this type
All 23 registered N-numbers
Every tail currently on the FAA registry for this make/model. Click an N-number to query the FAA Aircraft Inquiry; rows flagged ● have NTSB events on file. Tails seeded with full TallyAero pages link directly.
| N-number | St | Year | NTSB | FAA |
|---|---|---|---|---|
| N14911 | CA | 1935 | · | Look up ↗ |
| N14954 | WA | 1935 | ● | Look up ↗ |
| N14955 | TN | 1936 | · | Look up ↗ |
| N14956 | GA | — | · | Look up ↗ |
| N14957 | MO | 1935 | · | Look up ↗ |
| N14982 | CA | 1936 | · | Look up ↗ |
| N14983 | CO | 1936 | · | Look up ↗ |
| N14984 | CA | 1936 | · | Look up ↗ |
| N14985 | MT | — | ● | Look up ↗ |
| N14987 | CA | — | ● | Look up ↗ |
| N16039 | CA | 1936 | · | Look up ↗ |
| N17351 | OR | 1937 | ● | Look up ↗ |
| N17352 | CA | 1937 | ● | Look up ↗ |
| N17353 | KS | 1937 | · | Look up ↗ |
| N17357 | TX | 1937 | · | Look up ↗ |
| N17369 | PA | 1937 | · | Look up ↗ |
| N18902 | IA | 1938 | · | Look up ↗ |
| N18922 | PA | 1939 | · | Look up ↗ |
| N18923 | GA | 1939 | ● | Look up ↗ |
| N26JC | NY | 1937 | · | Look up ↗ |
| N7779 | NV | — | · | Look up ↗ |
| N86555 | MO | — | · | Look up ↗ |
| N9E | VA | 1939 | · | Look up ↗ |
Source — FAA Aircraft Registry · click "Look up" to query the live registry record (owner, address, last airworthiness)
05 / Sources & Methodology
Every count traces back to a primary US-government source
- FAA Aircraft Registry →
Refreshed Apr 27, 2026
Available
- NTSB CAROL →
Refreshed Apr 27, 2026
Available
- Federal Register (FAA Airworthiness Directives) →
Refreshed Apr 27, 2026
Available
We render counts and lists as the agency publishes them. Read the methodology →