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No. of STCs: 4

STC Holder: Chromizing Company Div. of Chromalloy American Corp. 1150 McCullom Drive, El Centro, CA 922243, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE5058NM	Status: Current	App Date:	Rev Date: 01/01/1960
Description: Incorporation of feather seals into platforms of the first stage nozzle guide vanes, P&W P/N 653751, 737271, 738271, 747171, 792871, 786471, and 798771.
TC Nos.: E2EA
Models: Pratt & Whitney DivisionJT8D-17, JT8D-7, JT8D-9
ACO: AIR-770: West Certification Branch LA

STC Holder: Chromizing Company Div. of Chromalloy American Corp. 1150 McCullom Drive, El Centro, CA 922243, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE5058NM	Status: Historical	App Date:	Rev Date:
Description: Incorporation of feather seals into platforms of the first stage nozzle guide vanes, P&W P/N 653751, 737271, 738271, 747171, 792871, 786471, and 798771.
TC Nos.: E2EA
Models: Pratt & Whitney DivisionJT8D-17, JT8D-7, JT8D-9
ACO: Los Angeles ACO Branch, Tel: +1 (562) 627-5200

STC Holder: Chromizing Company Div. of Chromalloy American Corp. 1150 McCullom Drive, El Centro, CA 922243, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE86WE	Status: Current	App Date:	Rev Date: 02/14/1990
Description: Replace the airoils on P&WA P/Ns 495051, 478351, 583751, 653851, 653951, 572451, 583351, 653751, 653151, 676951, 728951, 709951, 710751, 627751, 737271, 578551, 738271, 747171, 792871, 786471, 583751, 777971, 780591, 782571, 793181, 799771, 794481, 794491 , 798781, and 799191.
TC Nos.: E2EA, E9NE
Models: Pratt & Whitney DivisionJT8D-1, JT8D-11, JT8D-15, JT8D-15A, JT8D-17, JT8D-17A, JT8D-17AR, JT8D-17R, JT8D-1A, JT8D-1B, JT8D-209, JT8D-217, JT8D-217A, JT8D-217C, JT8D-219, JT8D-7, JT8D-7A, JT8D-7B, JT8D-9, JT8D-9A
ACO: AIR-770: West Certification Branch LA

STC Holder: Chromizing Company Div. of Chromalloy American Corp. 1150 McCullom Drive, El Centro, CA 922243, United States		If you are an STC Holder, Contact us to have your company added here!
STC No.: SE87WE	Status: Current	App Date:	Rev Date: 12/21/1977
Description: Replace the airfoils on P&WA P/Ns 505351, 536751, 665951, 665851 first stage turbine nozzle guid vanes on P&WA engine models listed.
TC Nos.: 1E8
Models: Pratt & Whitney DivisionJT3D-1, JT3D-1-MC6, JT3D-1-MC7, JT3D-3, JT3D-3B, JT3D-7
ACO: AIR-770: West Certification Branch LA