# STC SA841NW - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Avcon Industries Inc, United States - Description: Installation of the Mark II performance system, including recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements in accordance with Avcon Master Drawing List No. 1085 dated November 16, 2010, or later FAA approved revision. 350 Knot Vmo authorized if equipped in accordance with Avcon Master Drawing No. 1085 dated November 16, 2010, or later FAA approved revision. An FAA approved Airplane Flight Manual Supplement is required for each model. - Applied: July 15, 1979 - Status date: November 16, 2010 - Product: Aircraft, Small Multi-Engine - Certification basis: Part 21, Part 25 - Data sheets: [TCDS A10CE](https://openairdocs.org/tcds/A10CE) - Certificate PDF: https://openairdocs.org/files/sha256/51/bc/51bc93a5f27250e48a403410ab20b26516ebca519317f8411dc00ffc2565756d - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/BD956622D96CBA378625783A0055E679.0001 - DRS record last changed: December 5, 2025 - Page: https://openairdocs.org/stc/SA841NW ## ADs that name it (0) None. ## Approved models (7) - Learjet Inc. 24B ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24B-A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24D ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24D-A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24E ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24F ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24F-A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) ## 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. This certificate issued to: AVCON Industries, Inc 714 N. Oliver Road Newton, KS 67114-9444 Part 25 of the Federal Aviation Regulations. Original Product - Type Certificate Number: A10CE Make: Learjet, Inc Model: 24B, 24B-A, 24D, 24D-A, 24E, 24F, and 24F-A Description of Type Design Change: Installation of the Mark II performance system, including recontoured flap leading edge, wing vortex generator removal, installation of wing stall strips and other minor refinements in accordance with Avcon Master Drawing List No. 1085 dated November 16, 2010, or later FAA approved revision. 350 Knot Vmo authorized if equipped in accordance with Avcon Master Drawing No. 1085 dated November 16, 2010, or later FAA approved revision. An FAA approved Airplane Flight Manual Supplement is required for each model. Limitations and Conditions: The installer must determine whether this design change is compatible with previously approved modifications. If the holder agrees to permit another person to use this certificate to alter a product, the holder must give the other person written evidence of that permission. A copy of this Certificate and Addendum No. SA841NW shall be maintained as part of the permanent records for the modified aircraft. Date of application: July 15, 1979 Date of issuance: October 23, 1979 Date reissued: April 13, 2000; June 03, 2010; November 16, 2010 Date amended: May 14, 2001 Original signed by Grant E. Youngdahl ( Signature) Grant E. Youngdahl Program Manager Wichita Airplane Certification Office (Title) FAA Form 8110-2-1(10-69) Page 3 of 3 Number SA841NW Date of Issuance: October 23, 1979 Date Amended: May 14, 2001 Date Reissued: November 16, 2010 **SUPPLEMENTAL TYPE CERTIFICATE ADDENDUM NO. SA841NW** The limitations noted in Type Certificate Data Sheet No. A10CE are applicable except as follows: Section III Airspeed Limits (CAS) V mc (Minimum Control Speed) Air 97 Knots V fe (Flaps Extended) Landing 150 Knots Flaps 20° 200 Knots Flaps 10° 250 Knots V mo (Maximum Operating) 300 Knots V mo (If equipped with Dwg. List 36) 300 Knots from Sea Level to 14,000 ft. 350 Knots 14,000 ft. to 23,900 ft. Stabilizer Travel Limits 24B, 24B-A, 24D, 24D-A (If equipped with ECR 1514 or 1510 or 24E, 24F, 24F-A) Upper Limit –0 052’ to –108’ Lower Limit –8 030’ to –900’ --END-- ## Every issue (2) - November 16, 2010: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/51/bc/51bc93a5f27250e48a403410ab20b26516ebca519317f8411dc00ffc2565756d) - September 8, 2005: Reissued, Historical. [certificate](https://openairdocs.org/files/sha256/31/ac/31aca4c61b4b908be052cbe363ed26141155512356b3e55b894c91bf972dc57a) --- 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.