STC SA1670SW

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 1 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA1670SW The NORDAM Group LLC 6910 N. Whirlpool Tulsa, OK 74117 Part 25* the Federal Aviation Regulations * A10CE Learjet Inc.

24, 24A, 24B, 24B-A, 24D, 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, 25F

(See continuation sheet 4 of 5) May 21, 1971 7/26/99; 10/24/03; 4/1/19 June 5, 1973 6/20/73; 7/19/73; 9/11/73; 9/26/73; 12/7/73; 10/25/74; 8/25/76; 9/22/76;

4/28/78; 7/12/78 Rev. 10 Jim Grigg Manager, Fort Worth ACO Branch, Compliance & Airworthiness Division Aircraft Certification Service 5

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page 2 of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate Number:

SA1670SW 5

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

SA1670SW Date of Issuance: June 05, 1973 Date Amended: July 12, 1978 Date of Reissuance: April 1, 2019

*Certification basis: Part 25 of the Federal Aviation Regulations as noted on Type Certificate Data Sheet No. A10CE for models listed on this STC plus 25.933(d),

25.1141(e), and 25.1182 of Am. 25-11 effective June 4, 1967; 25.1041 of Am. 25-18 effective Sept. 29, 1968; 25.901(c), 25.934, 25.1091(d)(2), 25.1143(e), 25.1183, and

25.1309(c) and (d) of Am. 25-23 effective May 8, 1970.

Description of Type Design Change (Continued):

Installation of engine thrust reversers in accordance with The Dee Howard Company Drawing List Number 25-0570-000DL as listed below:

Model 25 - Rev. W dated May 25, 1973, or later FAA approved revision Model 25B - Rev. X dated June 12, 1973, or later FAA approved revision Model 25C - Rev. Y dated July 18, 1973, or later FAA approved revision Model 24D - Rev. Z dated Sept 10, 1973, or later FAA approved revision Models 24, 24A - Rev. AA dated Sept. 25, 1973, or later FAA approved revision Model 24B - Rev. AB dated Nov. 21, 1973, or later FAA approved revision Models 24E, 24F, 25D, and 25F - Rev. AJ dated March 12, 1976, or later FAA approved revision.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

SA1670SW Date of Issuance: June 05, 1973 Date Amended: July 12, 1978 Date of Reissuance: April 1, 2019

FAA Approved Airplane Flight Manual Supplement listed below is required:

Model 25 - Supplement dated June 5, 1973 Model 25B, 25C - Supplement dated June 20, 1973, reissued July 19, 1973 Model 24D - Supplement dated September 11, 1973 Model 24 - Supplement dated September 26, 1973 Model 24B - Supplement dated December 7, 1973 or Models 24, 24A, 24B, 24B-A, 24D (Except S/N 218), 24D-A, 25, 25A, 25B, 25C, 25D, 25F - Supplement dated October 25, 1974, revised August 18, 1976 or Models 24, 24A, 24B, 24B-A, 24D (Except S/N 218), 24D-A, 24E, 24F, 25, 25A, 25B, 25C, 25D, 25F - Supplement dated October 25, 1974, revised September 22, 1976 or Models 24, 24A, 24B, 24B-A, 24D (Except S/N 218), 24D-A, 24E, 24F fitted with Thrust Reverser Kit S/N 474 and subsequent; Models 25, 25A, 25B, 25C, 25D, 25F fitted with Thrust Reverser Kit S/N 237 and subsequent; or airplanes modified in accordance with Service Letter S125-6 Supplement dated October 25, 1974, revised July 12, 1978.

Installations are limited to those made by The Dee Howard Company and The Gates Learjet Corporation.

Aircraft weight and balance required after installation is completed.

FAA Form 8110-2 (11/20) SUPERSEDES PREVIOUS EDITION Page ___ of ___ United States of America Department of Transportation Federal Aviation Administration Supplemental Type Certificate (Continuation Sheet) Number:

SA1670SW Date of Issuance: June 05, 1973 Date Amended: July 12, 1978 Date of Reissuance: April 1, 2019

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.

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