1、I ES1 M*43 73 = 3624bb9 0097430 T -1 M 43 : October1973 UDC.629.7.022:003.6 British Standard : Aerospace Series Methods of Zoning aircraft and referencing access doors and panels Foreword This British Standard has been prepared, under the authorty of the Aerospace Indystry Standards Committee, to im
2、plement International Standard IS0 2529, Aircraft-zones, access doors and panels-referencing system, prepared by Technical Committee ISO/TC 20, Aircraft and Space Vehicles, of the International Organization for Standardization. The purpose of a zone referencing system is to facilitate maintenance pl
3、anning, the preparation of job cards and the location of work areas and components, and to provide a common basis for various tasks. This standard makes reference to the following British Standard: British Standard bl41 Methods of numbering propulsion units and describing their direction of rotation
4、. O O Gr 3 British Standards Institution - 2 Park Street - London WIA 2BS Telephone 01-629 9000 Telex 266933 I M 43 :I973 1. scope This British Standard states the principles to be adopted in preparing a zone referencing system for aircraft and describes the method of referencing access doors and pa
5、nels. 2. Zone referencing system 2.1 Zoning 2.1.1 Major zones. The aircraft shall be divided into the following major zones, which shall be designated by the standard series numbers stated: Major zone Lower half of fuselage to rear pressure bulkhead (Le. area below main cabin deck, Upper half of fus
6、elage to rear pressure bulkhead (i.e. area above mahi cabin deck, (1) (2) (3) Tail unit (4) (5) Left wing (6) Right wing (7) (8) including floor structure) including floor panels) Power plants, struts, nacelles and engine bays Landing gear and landing gear doors Doors (other than landing gear doors
7、and maintenance access doors) No. 1 O0 200 300 400 500 600 700 800 The special series no. 900 shall be reserved for special attachments to a basic aircraft which cannot be covered by the standard series numbers; for example, spare engine carriage kits, panniers fitted externally and helicopter panni
8、er packs. NOTE. It is not necessary to use ail the zone numbers for every type of aircraft. 2.1.2 Sub-major zones and zones. Major zones shall be divided into sub-major zones which shall be further divided into zones, in accordance with the principles stated in 2.2. Each sub-niajor zone shall be des
9、ignated by a number consisting of two digits and a zero (for example 110, 120, etc. in major zone 100) and each zone shall be designated by a number consisting of three digits (for example 11 1,112, . 119 in sub-major zone 110). The system of numbering shall be in accordance with the principles stat
10、ed in 2.3. Examples of the division of some types of aircraft into major zones are shown in Fig. 3. The figure zero shall not be used in a zone number. An example of the division of a major zone is given in Fig. 4. 2.1.3 Work locator. The use, where required, of an additional numerical digit as a ?w
11、ork locator? is recommended, for example : 1. Top outside 2. Topinside 3. Bottom inside 4. Bottom outside Examples of typical uses of the fourth digit are shown in Fig. 1. 7310-2.5k-B 2 M 43 :I973 Wng/stabilizer Fuselagelnacelie Fig. 1. Examples of use of the fourth digit (work locator) 2.2 Principl
12、es of zoning 2.2.1 Whenever possible, the division of similar major zones (for example left and right wings) and similar sub-major zones (for example left and right tailplanes) shall be the same. 2.2.1 Whenever possible, sub-major zones and zones shall be defined by actual physical boundaries such a
13、s wing spars, major bulkheads, cabin floor, major partitions, control surface boundaries and the skin. Internal boundaries in the wing and fuselage are normally of greater value in establishing zone boundaries than are external boundaries such as skin joints. 2.2.3 In the fuselage, zone boundaries s
14、hall not split galleys, toilets or major equipment centres. 2.2.4 High manpower work areas, such as leading and training edges of wings, wheel wells, fuel tanks, accessory compartments and the cockpit, shall be suitably zoned to define the work area. 2.2.5 Major structural components, including pass
15、enger doors, cabin service doors, landing gears, landing gear doors, rudders, elevators, flaps, ailerons, slots, slats and leading edge devices, shall be treated as separate zones and designated by individual zone numbers. 2.2.6 The areas enclosed by the wing-to-fuselage fillets, the centre wing are
16、a within the fuselage and the area between the wing and the fuselage floor shall be treated as separate zones and designated by individual zone numbers in the 100 or 200 series, as appropriate. 2.2.7 Zone boundaries shall enclose related structures such as door jambs, i.e. a jamb for a specific door
17、 shall not be split by a zone boundary. 2.3 Principles of numbering 2.3.1 General 2.3.1.1 With the exception specified in 2.3.2, the principles of numbering sub-major zones and zones shall be as follows: (1) Fuselage (See Fig. 2 which shows an exploded view of part of the lower half of the fuselage
18、in an imaginary aircraft.) front to rear inboard to outboard vertically away from floor line front to rear inboard to outboard root to tip (2) Other than fusekzge (See Fig. 4) -Forward Fig. 2. Example of fuselage zone numbering 3 M 43 :I973 2.3.1.2 Corresponding sub-major zones and zones on the left
19、 and right sides shall be allotted numbers in which the second or third digits, as appropriate, are an odd number for the left side and the next even number for the right side. (See sub-major zones 330 and 340 and zones 31 1 and 312 in Fig. 4.) A zone straddling the centreline may be allotted an odd
20、 or even number. 2.3.1.3 If the fuselage cannot readily be divided into upper and lower halves, it shall be treated as a single entity under major zone 200. 2.3.1.4 Zone numbers shall be compatible with both passenger and cargo versions of an aircraft. However, for significant differences, such as a
21、 nose loading door or a large cabin cargo entry door, separate new zone numbers shall be allotted. 2.3.2 Power pknts. The power plants shall be allotted sub-major zone numbers in sequence, starting with 410 for no. 1 power plant. The sequence of numbering shall be in accordance with British Standard
22、 M 41. 3. Access door and panel designation 3.1 General Maintenance access doors, fillets, fairings and removable access panels (Le. radio rack access, floors, cargo area and ceiling panels) shall be designated in accordance with 3.2. NOTE. Passenger doors, cabin service doors, cargo doors and landi
23、ng gear doors are designated by individual zone numbers (see 2.2.5). Blow out doors and tank vents need not be designated in the same manner. 3.2 Method of designation 3.2.1 The designation shall be by the number of the zone in which the item is located and a single-letter or, if required, a two-let
24、ter suffix made up as follows: stated in 2.3, starting with A in each zone. (1) (2) T Top B Bottom P Left hand E Righthand X Interior The letters I and O shall not be used. First letter. The first letter designates the item in a logical sequence, in accordance with the principles Secon letter. The s
25、econd letter locates the item in relation to the zone, i.e.: 3.2.2 An item on the fuselage centreline shall be allotted the left-hand zone number. 3.2.3 When a door or panel is located on a larger door or panel, the larger item shall be lettered first. 3.2.4 When an item is located in more than one
26、zone, it shall be allotted the lowest zone number involved. 3.2.5 Corresponding items on opposite sides of an aircraft shall have the same suffix even though the zone numbers will be different. 3.2.6 An item located on a zone boundary shall be allotted the number of the zone from which it is removed
27、. 4. Method of application The method of indicating combinations of zones, work locators and access panels on drawings and diagrams shall be as shown in the following examples: (1) Combination of two zones (Le. 311 and 312) 311 312 (2) Zone and work locator 31 12 (3) Zone and access panel 31 IA (4)
28、Zone, work locator and access panel 31 12A 4 I BSI M*43 73 Lb24bb 009741i4 7-m- I M 43 : 1973 II II I l I 1 V m .- v) m a ci, .- U O O m -. O O cy O 2 v UY a C N 8 .- E O C CI .- Lc O C O UY U .- .- .- a 5 Lc O 5 IBSI M*43 73 W Lb24669 0099435 9 rn I , M 43 :I973 n .- 6 U 6 .- E C E o - g m 4- o U 2
29、 1 .- m m a, - +I o 8, n w .- o I a - v) o) C I? 8 E cil .- U .- Co O c, C ci 9- .- i? t I- Co 9- O o) 5 Y- O v) o) - E (rJ X w & cil ii M LL ch I- Fig. 4a. Sub-major zones 310 (fuselage aft of rear pressure bulkhead) and 320 (fin and rudders) Fig. 46. Sub-major zone 330 (left tailplane) Major zone
30、300 Tail unit Sub-major zone 310 Fuselage aft of rea pressure bulkhead 320 Fin and rudders 330 Left tailplane 340 Right tailplane NOTE. Sub-major zone 340 (right tailplane) is a mirror image of 330 lone 31 1 Area V to W - left 312 Area V to W - right 313 Torsion box compartment (W to X) - left 314 T
31、orsion box compartment (W to X) - right 315 Area X to Y - left 316 Area X to Y - right 317 APU compartment (Y to Z) - left 318 APU compartment (Y to Z) - right 321 Fin : removable leading edge 322 Fin : auxiliary spar to front spar 323 Fin : front spar to rear spar 324 Fin : rear spar to trailing ed
32、ge 325 Rudder : lower section 326 Rudder : upper section 327 Fin : tip 331 Removable leading edge 332 Auxiliary spa to front spar 333 Front spar to rear spar 334 Rear spar to trailing edge 335 Inboard elevator 336 Outboard elevator 337 Tip 341 to 347 as 331 to 337 Fig. 4. Example of the division of
33、a major zone 7 This British Standard, having been approved by the Aerospace Industry Standards Committee, was published under the authority of the Executive Board on 15 October, 1973. British Standards Institution, 1973 ISBN: O 580 07666 O Copyright Users of British Standards are reminded that copyr
34、jght subsists in all BSI publications. No part of this publication may be reproduced in any form without the prior permission in writing of BSI. This does not preclude the free use, in the course of implementing the standard, of necessary details such as symbols and size, type or grade designations.
35、 Eiiquhies should be addressed to the BSI Secretariat. Contract requirements Attention is drawn to the fact that this British Standard does not purport to include all the necessary provisions of a conteact. Revision of British Standards British Standards are revised, when necessary, by the issue eit
36、her of amendment slips or of revised editions. It is important that users of British Standards should ascertain that they are in possession of the latest amendments or editions. The following BSI references relate to the work on this standard: Committee reference ACE/55 Draft for approval 72/37890.
37、AMD 1326 Amendment Slip No.1, published 18 December, 1973 to British Standard M 43 : 1973 (Aerospace Series) Methods of zoning aircraft and referencing access doors and panels Correction Fig. 3. Examples of the division of aircraft into major zones Transpose the diagrams above the titles of Fig. 3g and Fig. 3h.
