The L or R following a part number Indicates that the part is either a left hand or a right hand part. The LH following the nomenclature of the 87-05-501-45L Trailing Edge shows that that particular part Is assembled on the 87-050-IOOOL Aileron Assembly, but has -no bearing whatsoever on whether the Trailing Edge is a left hand or a right hand part. (F) Tnroughout the Group Assembly Parts List, index arrows on illustrations frequently carry more than one index number. The following are the two general cases where an arrow carries more than one number. General Case No. 1: Attaching parts are often called out Ehrough the use of one index arrow. General Case No. 2: An assembly and a major component part of that assembly are Indicated frequently through the use of one index arrow. One arrow serves to Identify the Tube Assembly and Tube, while another arrow Indicates the Clip, Screw, Washer and Nut.

(G) This Illustrated Parts Catalog is effective from AF43-5403 through AF44-47968. Alphabetic symbols are used throughout the Group Assembly Parts List. to show airplanes on which a part ts effective. The table shown below gives the Air Force serial numbers covered by the various code letters. Code Letter Block Air Force Serial Number P-40M A AF43-5403 AF43-5722 B AF43-5723 AF43-6002 P-40N C P-40-N1-CU AF42-104429 AF42-104828 D P-40-N5-CU AF42-104829 AF42-105028 E P-40-N5-CU AF42-105029 AF42-105128 F P-40-N5-CU AF42-105129 AF42-105639 H P-40-N5-CU AF42-105640 AF42-105778 I P-40-N5-CU AF42-105779 AF42-105928 J P-40-N10-CU AF42-105929 AF42-106028 K P-40-N15-CU AF42-106029 AF42-106246 L P-40-N15-CU AF42-104429 AF42-106246 P P-40-N20-CU AF42-106247 AF42-106406 R P-40-N20-CU AF42-106407 AF43-23151 S P-40-N20-CU AF43-23152 AF43-23251 T P-40-N25-CU AF43-23252 AF43-24751 U P-40-N30-CU AF44-7001 AF44-7500 V P-40-N35-CU AF44-7501 AF44-8000 W P-40-N40-CU AF44-47749 AF42-47968 No code letter is assigned to apart which is used on all airplanes covered by this catalog. (H) Use of cross-referencing is made In this catalog. Here follows a brief explanation of the case where cross-referencing Is employed In this catalog. In the Group Assembly Parts Ltst breakdown where an installation, assembly, or part is listed in Its entirety only, the note,(see Fig. ),will follow the nomenclature of the part and will give the figure number on which it is shown exploded into its procurable components. In the list accompanying the plate where the part Is shown in breakdown form. the part itself will carry the figure numoer of the figure where it is shown assembled,

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