# STC SA5839NM - Type: Supplemental type certificate - Status: Current, Amended - Holder: Federal Express Corp, United States - Description: Installation of engine inlet and exhaust noise attenuation treatment including incorporation of respaced inlet guide vanes, exhaust gas internal mixers, acoustic spacers, and either increased area tailpipes or standard tailpipes. - Applied: December 27, 1989 - Status date: April 11, 2002 - Product: Aircraft, Large Multi-Engine - Certification basis: Part 21, Part 36 - Data sheets: [TCDS A3WE](https://openairdocs.org/tcds/A3WE) - Certificate PDF: https://openairdocs.org/files/sha256/7f/38/7f38a8653549168d65afbb07b330eb085b85c5f8422b57910de2a0cf020f7275 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/A160AFF5172B6DDB86256E6E006EA8CB.0001 - DRS record last changed: December 6, 2025 - Page: https://openairdocs.org/stc/SA5839NM ## ADs that name it (2) - [AD 2005-19-24](https://openairdocs.org/ad/2005-19-24): Forward support fitting of the number 1 and number 3 engines · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 more. Effective Oct 27, 2005. Cited in the text - [AD 2004-09-36](https://openairdocs.org/ad/2004-09-36): Bolts Used to Attach the Forward Cone Bolt to the Engine Flange · Boeing 727-100 Series, 727-100C Series, 727-200 Series and 3 more. Effective Jun 15, 2004. Cited in the text ## Approved models (1) - The Boeing Company 727-200 Series ([TCDS A3WE](https://openairdocs.org/tcds/A3WE)) ## 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 FEDERAL EXPRESS CORPORATION 3101 Democrat Road Memphis, TN 38118 Part 4b of the Civik Aviation Regulations. A3WE Boeing 727-200 Description of Type Design Change: Modification of the B727 airplane by installation of engine inlet and exhaust noise attenuation of treatm ent including incorpor ation of respaced inlet guide vanes, exhaust gas internal mixers, acoustic spacers, and either increased area tailpipes (exit diam eter 30.69 - 30.64 in. with engine first and second turbine vane rework) or sta ndard tailpipes (exit diam eter 30.262 - 30.212 in. ). Modifications are to be in accordance with Federa l Express Hushkit Modification Drawing List, Report No. 91-051, Revision G, dated May 7, 1993, (continued on page 3). Limitations and Conditions : The approval of this change in type design applies to those aircraft listed airplane models. This approval s hould not be extended to aircraft of these m odels that incorporate any other previously approved m odifications unless it is de termined that the interrelationship between this change and any of those other previously approved modification will introduce no adverse effect on the airworthiness of those aircraft. A copy of this Supplemental Type Certificate must be included in the permanent records of the m odified aircraft. If the holder agrees to perm it another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission. Date of application : December 27, 1989 Date of issuance : September 15, 1992 Date reissued : December 11, 1998 Date amended : 1/7/93, 2/18/92, 6/10/93, 4/15/97, 1/5/98, 4/9/99, 8/3/99, 4/11/02 ( Signature) Manager, Propulsion Branch Los Angeles Aircraft Certification Office ( Title) NOTE: **DO NOT DELETE THIS PAGE.** **DO NOT ADD ANY DATA TO THIS PAGE.** **THIS PAGE IS FOR PAGE NUMBERING PURPOSES, PLEASE DISCARD PRINTED COPY.** Number SA5849NM Description of Type Design Change (continued): or later FAA approved revision. FAA-approved B 727-200 Airplane Flight Manual Supplement, Federal Express Report No. 92-082, Revision N/C, dated Septem ber 15, 1992, or later FAA-approved revision, is required as part of the installation with the in creased area tailpipe hushkit. FAA-approved B727-200 Airplane Flight Manual Supplement, Federal Express Report No. 93-008, Revision B, dated June 10, 1993, or later FAA-approved revision, is required as part of the installation with the standard tailpipe hushkit. All Limitations and Conditions show n on Type Certificate Data Sheet No. A3WE, Revision 19, or later approved revisions, for the 727-200 airplanes remain applicable. The following list contains other Limitations and Conditions which apply to this Supplemental Type Certificate modification: Noise Compliance Aircraft serial numbers modified in accordance with this STC and listed in the Basic Section of the FEDEX Airplane Flight Manual Supplement (AFMS) as requiring use of any AFMS appendix showing Part 36, Stage 3 approval, are Stage 3 compliant. Aircraft serial numbers modified in accordance with this STC, whose serial numbers have not been listed in the Basic Section of the FEDEX AFMS and have not been previously shown to be Part 36, Stage 3 co mpliant, have been determined to be a “No Acoustical Change” in accordance with § 21.93(b) and remain Stage 2. Aircraft serial numbers modified in accordance with this STC, that have been previously shown to be Part 36, Stage 3 compliant under this STC, or any other approval, must be listed in the Basic Section of the FEDEX AFMS as requiring use of an appendix showing Part 36, Stage 3 a pproval and may not be operated as Stage 2 aircraft. Engines: Only Pratt and Whitney JT8D-15, -15A, -17, -17A, -17AR and -17R turbofan engines for this modification with the increased area tailpipe hushkit (-17, -17A, -17AR and -17R engines to be operated at –15 thrust levels). Only Pratt & Whitney JT8D-9, -9A, -15, -15A, -17, -17A, -17AR and -17R turbofan engines for this modification with the standard tailpipe hushkit. Engine Intermix: Intermix of JT8D-9, -9A, -15 and -15A turbofan engines is permitted (-15 and -15A engines to be operated at -9 thrust levels). Intermix of JT8D-15, -15A, -17, -17A, -17AR and -17R turbofan engines is permitted in accordance with the appropriate Federal Express Flight Manual Supplement. Number SA5839NM Engine and Airplane Limits: See Type Certificate Data Sheet A3WE and the attached Flight Manual Supplement (Federal Express Report No. 92-082 for increased area tailpipe hushkit, Federal Express Report No. 93- 008 for standard tailpipe hushkit). Flap Limitations: See Type Certificate Data Sheet A3WE and the attached Flight Manual Supplement (Federal Express Report No. 92-082 for increased area tailpipe hushkit, Federal Express Report No. 93-008 for standard tailpipe hushkit). Maximum Weights: See Type Certificate Data Sheet A3WE and the attached Flight Manual Supplement (Federal Express Report No. 92-082 for increased area tailpipe hushkit, Federal Express Report No. 93-008 for standard tailpipe hushkit). Maximum Speed: See Type Certificate Data Sheet A3WE and the attached Flight Manual Supplement (Federal Express Report No. 92-082 for increased area tailpipe hushkit, Federal Express Report No. 93-008 for standard tailpipe hushkit). -END- ## Every issue (1) - April 11, 2002: Amended, Current. [certificate](https://openairdocs.org/files/sha256/7f/38/7f38a8653549168d65afbb07b330eb085b85c5f8422b57910de2a0cf020f7275) --- 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.