1、_SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising theref
2、rom, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions. Copyright 2009 SAE International All rights reserved. No part of this publication ma
3、y be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-4970 (outside US
4、A) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.orgSAE values your input. To provide feedback on this Technical Report, please visit http:/www.sae.org/technical/standards/ARD6481AEROSPACERESOURCEDOCUMENTARD6481 Issued 2009-11TSO for Berthing Divans and Seats with Fe
5、atures that Require the Release of the Occupant Restraint RATIONALEThis Aerospace Resource Document (ARD) provides technical and non-technical information to support a technical report.TABLE OF CONTENTS 1. SCOPE . 21.1 Purpose 21.2 Applicability 21.3 Product Classification 22. REFERENCES . 22.1 Appl
6、icable Documents . 22.1.1 SAE Publications 22.1.2 Code of Federal Regulations (CFR) Publications 22.2 Applicable References . 32.3 Definitions 33. GENERAL DISCUSSION 33.1 TSO C39c References. 33.1.1 Background and timeline: 33.1.2 General Discussion. . 34. RECOMMENDED ACTIONS . 4SAE ARD6481 Page 2 o
7、f 41. SCOPE AS8049A currently requires adjustable features on aircraft seats to be designed so they can be returned to the positions required for taxi, takeoff and landing by the occupant without the release of the occupant restraints. This ARD will demonstrate Aviation Industry support for revision
8、s to TSO-C39c and TSO-C127a to allow Technical Standard Order (TSO) approval of aircraft seat products designed with adjustable features that require the release of occupant restraints to return the feature to the taxi, takeoff and landing position. 1.1 Purpose This ARD will provide the technical ev
9、aluation and recommendation to FAA Engineering Division AIR-120 from the SAE SEAT Committee for changes to TSO-C127a and TSO-C39c to allow for approval of seats with a conversion feature (e.g., berthable divans, full lie-flat seats, etc.) that require the release of the occupant restraints to return
10、 the seat to the taxi,takeoff and landing position. This ARD will also recommend these same changes be made to the next revision of AS8049.1.2 Applicability This document applies to AS8049A Section 3.2.6. with regard to seats with a conversion feature that require the release of the occupant restrai
11、nts to return the seat to the taxi, takeoff and landing position.1.3 Product Classification This document covers all passenger seats for use in aircraft type-certificated as defined in AS8049A Section 1.3. 2. REFERENCES 2.1 Applicable Documents As a resource document, nothing in this document shall
12、supersede existing SAE documents, or applicable laws and regulations.2.1.1 SAE Publications Available from SAE, 400 Commonwealth Drive, Warrendale, PA, 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or 724-776-4970 (outside USA), www.sae.org.AS8049A Performance Standards for Seats in Civil Ro
13、torcraft, Transport Aircraft, and General Aviation Aircraft 2.1.2 Code of Federal Regulations (CFR) Publications Available from the U.S. Government Printing Office, Superintendent of Documents, Mail Stop SSOP, Washington, D.C., 20402-9328.Code of Federal Regulations, Title 14 Part 23 (14 CFR Part 23
14、), “Airworthiness Standards: Normal, Utility, and Acrobatic Category Airplanes“ Code of Federal Regulations, Title 14 Part 25 (14 CFR Part 25), “Airworthiness Standards: Transport Category Airplanes“Code of Federal Regulations, Title 14 Part 27 (14 CFR Part 27), “Airworthiness Standards: Normal Cate
15、gory Rotorcraft“ Code of Federal Regulations, Title 14 Part 29 (14 CFR Part 29), “Airworthiness Standards: Transport Category Rotorcraft“ SAE ARD6481 Page 3 of 42.2 Applicable References FAA Policy Memorandum “Clarification for Seat Adjustable Features per TSO-C39c and TSO-C127.” Dated November 7th,
16、 20072.3 Definitions ARD: Aerospace Resource Document Berthable Divan: A two, or more, place seat that can convert to a pull out bed when the occupant releases the restraint, and leaves the seat to convert the seating area to a berth. CFR: Code of Federal Regulations Full lie-flat seat: A seat that
17、can only convert to a full lie-flat configuration when the occupant releases the restraint, andleaves the seat to convert the seat to a lie-flat configuration.3. GENERAL DISCUSSION 3.1 TSO C39c References. TSO-C39C was issued 02/13/04. The major change was removal of NAS 809, Type I Transport 9G for
18、ward load and replaced by the minimum performance standard of SAE AS 8049A. However this applies only to Type “A” Transport Category aircraft. Type II (Normal & Utility),Type III (Acrobatic), and Type IV (Rotorcraft) are still covered by TSO-C39b). 3.1.1 Background and timeline: Prior to August 2007
19、, TSO-C39c application was submitted for a First Class Commercial aircraft seat (Part 121 operations). The seat had a feature that required the occupant to leave the seat to convert the seat to a lie flat bed. TSO-C39c was denied. August 2007 An application for TSO-C39c for berthable divan submitted
20、 to Atlanta ACO was forwarded to FAA Aircraft Engineering Division (DC) for comment. TSO-C39c was denied. November 7th, 2007 FAA Aircraft Engineering Division released the FAA Memorandum “Clarification for Seat Adjustable Features per TSO-C39c and TSO-C127(). December 2007: Seat manufacturer applies
21、 to FAA Aircraft Engineering Division (via Atlanta ACO) for deviation to TSO. Deviations must demonstrate an equivalent level of safety to TSO and AS8049A. However this adjustable feature is specifically prohibited by TSO, and TSO was denied. 3.1.2 General Discussion. For Divans or any aircraft seat
22、ing product that received TSO-C39c or TSO C127a approval, each seat design must evaluated to AS8049A para 3.2.6 “Adjustable features (seat swivel, back recline,and stowage of movable tables, armrest, footrests, etc.) shall be designed so that they can be returned by the occupant to the position requ
23、ired for taxi, takeoff, and landing without the release of the occupant restraints. During the May, 2008 and Sept 2008 SAE Technical committee meetings. The FAA and industry representatives agreed that: The text of AS8049A para 3.2.6. was written without the consideration of features found on berthi
24、ng divans, and predated full lie-flat seats. Both berthing divans and commercial lie-flat seats are today being approved by STC (or TC). These are popular features and likely to remain popular with the traveling public. SAE ARD6481 Page 4 of 4 It is not a safety of flight issue, but rather a non-com
25、pliance with TSO issue. Proposed changes to text of Para 3.2.6., resulted in these comments from committee: No change to existing language in para 3.2.6 to ensure that a seat that has a reclining backrest that can be reclined without releasing the restraint must be required to be restored to TTOL po
26、stion without releasing restraint. 4. RECOMMENDED ACTIONS The following two actions are recommended: 1. To address the immediate TSO compliance issues for seats with a conversion feature, submit a request to FAA Engineering Division AIR-120 stating that: a. SAE supports TSO approval for seats with a
27、 conversion feature that require the release of the occupant restraints to return the seat to the taxi, takeoff and landing position.b. SAE recommends TSO-C127a Appendix 1 paragraph 2.1 be revised to include a paragraph 2.1.x. (inserted between paragraphs 2.1.2 and 2.1.3) “For seats with a conversio
28、n feature (e.g., berthable divans, full lie-flat seats, etc.) that require the release of the occupant restraints to return the seat to the taxi, takeoff and landing position, compliance with AS8049A Subsection 3.2.6 is not required with regard to the conversion feature.” c. SAE recommends TSO-C39c
29、paragraph 3.a.(4) be revised to add the following sentence at the end:”For seats with a conversion feature (e.g., berthable divans, full lie-flat seats, etc.) that require the release of the occupant restraints to return the seat to the taxi, takeoff and landing position, compliance with AS8049A Sub
30、section 3.2.6 is not required with regard to the conversion feature.” 2. Change SAE AS8049B Section 3.2.6 at its next revision. Recommended change to text as follows: “Adjustable features (seat swivel, back recline, and stowage of movable tables, armrests, footrests, etc.) shall be designed so that
31、they can be returned by the occupant to the positions required for taxi, takeoff and landing without release of occupant restraints. For seats with a conversion feature (e.g., berthable divans, full lie-flat seats, etc.) that require the release of the occupant restraints to return the seat to the taxi, takeoff and landing position, restraints may be released to use these features to return the seat to the taxi, takeoff and landing configuration.” PREPARED BY THE SAE AIRCRAFT SEAT COMMITTEE
