# STC ST12087CH - Type: Supplemental type certificate - Status: Current, Reissued - Holder: Avcon Industries Inc., United States - Description: Installation replacement Cabin/Cockpit Handheld Fire Extinguishers - Applied: May 13, 2025 - Status date: September 15, 2025 - Product: Aircraft, Large Airplane - Certification basis: Part 25 - Data sheets: [TCDS T00008WI](https://openairdocs.org/tcds/T00008WI), [TCDS A10CE](https://openairdocs.org/tcds/A10CE) - Certificate PDF: https://openairdocs.org/files/sha256/64/39/643955fe0cde8bcfc871f5539168fc53648b095abb66d7e3987b9d95cb3a3bca - Approved model list and other attachments: [ST12087CH_AML.pdf](https://openairdocs.org/files/sha256/ec/9a/ec9ad887743f91cd560c5a481a8c89b77829694b46ae7aa34fadd1b3c243eea4) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID166170525320260123172820.0001 - DRS record last changed: January 23, 2026 - Page: https://openairdocs.org/stc/ST12087CH ## ADs that name it (0) None. ## Approved models (28) - Learjet Inc. 24 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24B ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24B-A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 24C ([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)) - Learjet Inc. 25 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 25A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 25B ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 25C ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 25D ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 25F ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 28 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 29 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 31 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 31A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 35 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 35A (C-21A) ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 36A ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 45 ([TCDS T00008WI](https://openairdocs.org/tcds/T00008WI)) - Learjet Inc. 55 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 55B ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 55C ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) - Learjet Inc. 60 ([TCDS A10CE](https://openairdocs.org/tcds/A10CE)) ## What the certificate says This is OCR from the scanned FAA certificate. OCR can misread letters and numbers. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST12087CH This certificate issued to: Avcon Industries, Inc. 714 N. Oliver Road Newton, KS 67114 Part 25 of the Federal Aviation Regulations Original Product Type Certificate Number: * Description of Type Design Change: Model: * See AML number ST12087CH Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers in accordance with Avcon Industries, Inc. Master Date List 08801000, Revision A dated August 05, 2025, or later FAA Approved Revision. 1. This STC is applicable to all serial numbers for the Make-Model aircraft appearing on AML ST12087CH. Date of Application: 05/13/2025 Date Reissued: 09/15/2025 Date of Issuance: 08/21/2025 Date Amended: Title: Dan Trigg, ODA Administrator StandardAero, Springfield, IL ODA-100079-CE An STC holder who allows a person to use the ST to alter an aircraft, aircraft engine, or propeller must provide that person with written permission acceptable to the FAA. (Ref. 14 CFR 21.120). United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number: ST12087CH Effective Date: The STC's supporting documentation (drawings, instructions, specifications, flight manual supplements, etc.) is the property of the STO older. United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number: ST12087CH Effective Date: Description of Type Design Change: (continued): The aircraft must be maintained in accordance with FAA accepted Instructions for Continued Airworthiness, for each Make-Model as listed on the FAA AML number ST12087CH, or later FAA Accepted revision, in addition to the basic aircraft maintenance manuals. Limitations and Conditions: (continued): 2) The installer must determine whether this design change is compatible with previously approved modifications. 3) 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. Certification Basis (continued): See FAA AML number ST12087CH for complete certification basis. -- END -- ### ST12087CH_AML.pdf This is OCR from the scanned FAA attachment. OCR can misread letters and numbers. Federal Aviation Administration (FAA) Approved Model List (AML) Number ST12087CH For Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers ITEM AIRCRAFT MAKE AIRCRAFT MODEL TCDS NO. REVISION* NUMBER/ MASTER DATA LIST FAA APPROVED APPROVAL DATE* FAA APPROVED AIRPLANE FLIGHT REVISION* NUMBER MANUAL SUPPLEMENT APPROVAL DATE* FOR CONTINUED AIRWORTHINESS FAA ACCEPTED INSTRUCTIONS REVISION* NUMBER/ APPROVAL DATE* REVISION*/DATE* AML 24, 24A/B/B-A/C/D/D- A/E/F/F-A, 25, 1 Learjet Inc. 25A/B/C/D/F, 28, 29, 31, 31A, 35, 36, 35A A10CE 08801000 Rev A 05 AUG 2025 N/A NIA 08807200 Rev IR 28 JUL 2025 21 AUG 2025 Revison A (C-21A), 36А, 55, 55B, 55C, 60 2 Learjet Inc. 45 T00008WI 08801000 Rev A 05 AUG 2025 N/A 08807200 Rev IR 28 JUL 2025 21 AUG 2025 Revison A *Or later FAA Approved Revision/Date FAA Approved: Dan Trigg, ODA Administrator StandardAero Springfield, Illinois FAA ODA-100079-CE Issued Date: August 21, 2025 Revision A, August 21, 2025 Page 1 of 3 Federal Aviation Administration (FAA) Approved Model List (AML) Number ST12087CH Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers Certification Basis for Alteration: The certification basis for the changed aircraft as described in this AML is as follows: AML Item 1 Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for Learjet Inc. 24, 24A/B/B-A/C/D/D-A/E/F/F-A, 25, 25A/B/C/D/F, 28, 29, 31, 31A, 35, 36, 35A (C-21A), 36А, 55, 55B, 55C, 60 series aircraft, Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers are as follows: a. The type certification basis for the Learjet Inc. 24, 24A/B/B-A/C/D/D-A/E/F/F-A, 25, 25 A/B/C/D/F, 28, 29, 31, 31A, 35, 36, 35A (C- 21A), 36A, 55, 55B, 55C, 60 series aircraft is shown on TCDS A 10CE for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of application, May 13, 2025 is based upon TCDS A10CE and §§ 14 CFR Part 25. Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the baseline modification was determined to be TCDS A 10CE. Regulations at the amendment level in TCDS A10CE 25.](a,b)[Original], 25.29(b)[25-72], 25.301(a,b)[25-23], 25.303(-)[25-23], 25.307(a)[25-72], 25.601(-)[Original], 25.603(а-c)[25-46], 25.605(a)[25-46], 25.609(a)[Original], 25.611(-)[25-23], 25.613(a,b)[25-72], 25.619(a-c)[25-23], 25.789(a)[25-46], 25.1301(a-c)[Original], 25.1309(a,b)[25-41], 25.1411(a(1)‚b)[25-70], 25.1529(-)[25-54], 25.1541(a,b)[Original], 25.1561(a-c)[25-46]. Regulations at later amendment level 25.305(a,b)[25-77], 25.561(c-d)[25-64], 25.625(a)[25-72], 25.851(a)[25-74]. Revision A, August 21, 2025 Page 2 of 3 Federal Aviation Administration (FAA) Approved Model List (AML) Number ST12087CH For Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers AML Item 2 Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for Learjet Inc. 45 series aircraft, Installation of Replacement Cabin/Cockpit Handheld Fire Extinguishers is as follows: a. The type certification basis for the Learjet Inc. 45 series aircraft is shown on TCDS T00008WI for parts not changed or not affected by the change. b. The certification basis for parts changed or affected by the change since the reference date of application, May 13, 2025 is based upon TCDS T00008WI and §§ 14 CFR Part 25. Based on 14 CFR §§ 21.115, 21.101 and the FAA policy for significant changes in FAA Order 8110.48A, the certification basis for the baseline modification was determined to be TCDS T00008WI. Regulations at the amendment level in TCDS T00008WI 25.1(a,b)[Original], 25.29(b)[25-72], 25.301(a,b)[25-23], 25.303(-)[25-23], 25.305(a,b)[25-77], 25.307(a)[25-72], 25.561(c-d)[25-64], 25.601(-)[Original], 25.603(а-c)[25-46], 25.605(a)[25-46], 25.609(a)[Original], 25.611(-)[25-23], 25.613(a,b)[25-72], 25.619(a-c)[25-23], 25.625(a)[25-72], 25.789(a)[25-46], 25.851(a)[25-74], 25.1301(a-c)[Original], 25.1309(a,b)[25-41], 25.1411(a(1),b)[25-70], 25.1529(-)[25-54], 25.1541(a,b)[Original], 25.1561(a-c)[25-46]. Regulations at later amendment level None. Revision A, August 21, 2025 Page 3 of 3 ## Every issue (1) - September 15, 2025: Reissued, Current. [certificate](https://openairdocs.org/files/sha256/64/39/643955fe0cde8bcfc871f5539168fc53648b095abb66d7e3987b9d95cb3a3bca), [ST12087CH_AML.pdf](https://openairdocs.org/files/sha256/ec/9a/ec9ad887743f91cd560c5a481a8c89b77829694b46ae7aa34fadd1b3c243eea4) --- 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.