# STC SA1525WE - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Sierra Industries Ltd., United States - Description: Installation of droop ailerons in flaps down mode, recontoured wing leading edge, and elevator trim spring (except on T210K, L, M, and210K, L, and M). - Applied: May 12, 1967 - Status date: July 31, 2017 - Product: Aircraft, Small Airplane - Certification basis: Part 3, Part 21 - Data sheets: [TCDS 3A21](https://openairdocs.org/tcds/3A21) - Certificate PDF: https://openairdocs.org/files/sha256/8b/3b/8b3bd54d39769758607525d84d60931b199ead06b44c8db56b33bc2a2d3c9f1e - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/B7874B70CEB165788625871F000A4EB0.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA1525WE ## ADs that name it (0) None. ## Approved models (22) - Textron Aviation Inc. 210 ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210-5 (205) ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210-5A (205A) ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210A ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210B ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210C ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210D ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210E ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210F ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210L ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. 210M ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210F ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210G ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210H ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210J ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210K ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210L ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) - Textron Aviation Inc. T210M ([TCDS 3A21](https://openairdocs.org/tcds/3A21)) ## What the certificate says Read from the PDF's text layer, without the form's printed wording; the layout is lost and the order can differ. The PDF is the record. FAA Form 8110-2 (5/14) Page 1 of 9 Reissued on July 31, 2017 to supersede the original STC, which has been lost or misplaced. Number: SA1525WE Part 3 of the Civil Air Regulations, effective May 15, 1956, with no amendments for Models 210 and 210A. The remainder of the models also meet CAR 3.112 amended October 1, 1959. Original Product – Type Certificate Number: 3A21 Make: Cessna Model: See below (Description of Type Design Change) Installation of droop ailerons in flaps down mode, recontoured wing leading edge, and elevator trim spring (except on the T210K, L and M, and 210K, L and M) per drawings shown on the following FAA sealed Robertson Aircraft Drawing Lists: No. 10 – Models 210, 210A, 210B, 210C, 210-5(205) and 210-5A(205A) No. 13 – Models 210D, 210E, 210F and T210F No. 15 – Models 210G, 210H, T210G, T210H, T210J, 210J, 210K, T210K, 210L, T210L, 210M AND T210M Cessna 210, 210A, 210B, 210C, 210D, 210E, 210F, T210F, 210G, T210G, 210H, T210H, 210J, T210J, 210K, T210K, 210L, T210L, 210M, T210M, (205) 210-5, (205A) 210-5A Date of Application: May 12, 1967 Date Reissued: 1/15/69; 5/22/72; 11/5/73; 11/8/84; 10/10/86; 7/21/05; 7/31/17 Date of Issuance: October 11, 1967 Date Amended: 7/2/68; 8/4/69; 6/2/70; 11/30/70; 3/18/71; 2/16/72; 5/22/72; 1/19/77; 7/12/77; 11/10/77; 7/31/78 Signature Title Jim Grigg Manager, Fort Worth A CO Branch, Compliance & Airworthiness Division Sierra Industries, Ltd. 122 Howard Langford Drive Uvalde, TX 78801 FAA Form 8110-2 (5/14) Page 2 of 9 Transfer the ownership of Supplemental Type Certificate Number: SA1525WE To (Name and address of transferee) From (Name and address of grantor) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 3 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 The approval of this change in type design applies basically to the above aircraft only. This approval should not be extended to other aircraft of this model on which other previously approved modifications are incorporated unless it is determined that the interrelationship between this change and any other type design changes or previously approved modifications will introduce no adverse effect upon airworthiness of that aircraft. A copy of this Certificate and Addendum No. SA1525WE shall be maintained as part of the permanent records for the modified aircraft. The conditions and limitations of Type Certificate Data Sheet No. 3A21 apply except as follows: This Addendum, which is part of Supplemental Type Certificate No. SA1525WE prescribes conditions and limitations under which the product for which the STC was issued meets the airworthiness requirements of the Civil Air Regulations. A copy of this Addendum shall be maintained as part of the modified aircraft permanent records. Supplemental Type Certificate Holder: R/STOL SYSTEMS, INC. **I. MODEL 210 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Flap Droop Aileron Travel from Position Neutral ± 2° Droop Neutral ± 2° 0° 0° 14° DN 20° UP 25° 15° 11° DN 16° UP 40° 12.5° +0° 12° DN 18° UP -2° **II. MODEL 210A 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as I above. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 4 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: April 10, 2017 **III. MODEL 210B 4PCLM (NORMAL CATEGORY) MODEL 210C 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as I above. **IV. MODEL 210-5 (205) 6PCLM (NORMAL CATEGORY) MODEL 210-5A (205A) 6PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as I above. **V. MODEL 210D 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Flap Droop Aileron Travel from Position Neutral ± 2° Droop Neutral ± 2° 0° 0° 14° DN 20° UP 25° 16° 28° DN 3° UP 40° 13° 25° DN 5° UP **VI. MODEL 210E, 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as V above. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 5 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 **VII. MODEL T210F 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as V above. **VIII. MODEL 210F 4PCLM (NORMAL CATEGORY)** Control Surface Movements **AILERONS** Same as V above. **IX. MODEL T210G, 4PCLM (NORMAL CATEGORY) MODEL T210H, 4PCLM (NORMAL CATEGORY)** *Airspeed Limits (CAS) Flaps Extended 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Flap Droop Aileron Travel from Position Neutral ± 2° Droop Neutral ± 2° 0° 0° 14.5° DN 21° UP 30° 13° 14° DN 18° UP United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 6 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 **X. MODEL 210G, 4PCLM (NORMAL CATEGORY) MODEL 210H, 4PCLM (NORMAL CATEGORY)** *Airspeed Limits (CAS) Flaps Extended 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Same as IX above. **XI. MODEL T210J, 4PCLM (NORMAL CATEGORY)** *Airspeed Limits (CAS) Flaps Extended 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Same as IX above. **XII. MODEL 210J, 4PCLM (NORMAL CATEGORY)** *Airspeed Limits (CAS) Flaps Extend 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Same as IX above. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 7 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 **XIII. MODEL 210K/T210K, 6PCLM (NORMAL CATEGORY) MODEL 210L/T210L, 6PCLM (NORMAL CATEGORY)** It has been determined that this STC is applicable to the basic models listed in the title of this paragraph (XIII) *Airspeed Limits (CAS) Flaps Extend (210K/T210K) 100 M.P.H. (87 Knots) Flaps Extend (210L/T210L) 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Same as IX above. **XIV. MODEL 210M, T210M, 6PCLM (NORMAL CATEGORY)** It has been determined that this STC is applicable to the basic models listed in the title of this paragraph (XIV) *Airspeed Limits (CAS) Flaps Extend 100 M.P.H. (87 Knots) Control Surface Movements **AILERONS** Same as IX above. **DATA PERTINENT TO ALL MODELS** **NOTE 2.** A. Applicable to Models 210 and 210A (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.0… United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 8 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 B. Applicable to Models 210B and 210C (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.0… C. Applicable to Models 210-5(205) and 210-5A(205A) (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.0… D. Applicable to Models 210D and 210E (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.0… E. Applicable to Models 210F and T210F (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.0… F. Applicable to Models 210G, T210G, 210H, T210H, 210J, T210J (1)…Maximum flight maneuvering load factors – Flaps up +3.8, -1.52; Flaps down +2.5; Maximum gear extension speed 160 mph – (CAS); Maximum flap extension speed 10° flaps – 160 mph – (CAS); 10° - 30° flaps – 100 mph (CAS). G. Applicable to Models 210K and T210K (Serial Numbers 21059200 through 21059351) (1)…Maximum flap extension speed 10° flaps – 160 mph – (CAS); 10° - 30° flaps – 100 mph – (CAS). (10)…On Flap Control Indicator: b. 10° - 20° - full (Indices at these positions with white color code and 100 M.P.H. callout;…) United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 9 of 9 Date of Issuance: October 11, 1967 Amended Date: July 31, 1978 Date of Reissuance: July 31, 2017 H. Applicable to Models 210K and T210K (Serial Numbers 2105932 through 21059502) Applicable to Models 210L and T210L (Serial Numbers 21059503 through 21061039) (1)…Maximums Flap extend speed (CAS) 10° flaps 160 M.P.H. Flap extend speed (CAS) 10° - 30° 100 M.P.H. (15)…On Flap Control Indicator: (210K/T210K…) (b) 10° - 20° - full (Indices at these positions with white control code and 100 M.P.H. callout;…) On Flap Control Indicator: (210L/T210L…) (b) 10° - 20° - full (Indices at these positions with white control code and 100 M.P.H. callout;…) I. Applicable to Model 210L, T210L (Serial Numbers 21061040 and up), 210M, T210M (1)…Maximums Flap extend speed (IAS) 10° flaps 140K Flap extend speed (IAS) 10° - 30° 85K (15)…On Flap Control Indicator: (210M, T210M) (b) 10° - 20° - full (Indices at these positions with white control code and 87K callout;…) J. Applicable to all Models Auto pilot installation in all Model 210 airplanes is compatible with this STC. Any previously approved autopilot is acceptable with identical limitations as specified in the applicable pilots operating handbook supplement. -END- United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: SA1525WE FAA Form 8110-2 (5/14) Page 10 of 9 ## Every issue (2) - July 31, 2017: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/8b/3b/8b3bd54d39769758607525d84d60931b199ead06b44c8db56b33bc2a2d3c9f1e) - July 21, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/80/8f/808f854bf42f1d9900da13966f83e25f17ea93518563a76f8e85fd127812ccfe) --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.