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TOPS Code/Class:	AA21		Previous	Next
TOPS Category: ?This is my own (unofficial) means to categorise TOPS codes based on what they relate to and whether they are long (4 characters, i.e. including sub-codes) or short (3 characters)	LC - Long Code, Coaching Stock	In selection ?This works on your last-used TOPS selection, including any filters and sort orders. Buttons will not show if the current TOPS code was not in your last selection, or if you are at the beginning or end of the data set.
TOPS GENKOC: ?The first character of a TOPS code is known as the GENKOC and indicates the general type of rolling stock (e.g. 1xx are DMUs).	A - Passenger-carrying coaches	Overall ?This works on the overall TOPS code list without any filtering or sorting applied.
TOPS BRAKTY: ?The third character of many TOPS codes is the BRAKTY, indicating the type of braking equipment fitted (e.g. A indicates air brakes).	* - Not defined by code
Parent:	AA? (Gangwayed Corridor Coach)
Description:	Mk.1 SK (Corridor Second)
Numbers: ?Numbers are only shown where the ranges were limited. Otherwise, refer to the listings section below. The letter r after the numbers indicates this is a range, with not all numbers in the sequence used.
Status:
Date On:
Origins:
Date Off:
Destiny:
Key Photo:
Icon:

Sub-codes ?If this code had any sub-codes, they will be listed here.
None found

Designs/Diagrams ?Design codes and diagrams related to this code (and any sub-codes where relevant) are listed here.
4 designs/diagrams currently listed against this TOPS code/class (including any sub-codes).

Design	Class	Series	Description	Status
AA201		BR TOPS Carriage Diagram	Mk.1 Corridor Second (SK)	TBC
AA202		BR TOPS Carriage Diagram	Mk.1 Corridor Second (SK)	TBC
AA201.1C		BR TOPS Carriage Design Code	Mk.1 Corridor Second (SK)	TBC
AA202.1A		BR TOPS Carriage Design Code	Mk.1 Corridor Second (SK)	TBC

Batches ?Batches of numbers built or converted to this TOPS code are listed below. Note that only codes that were wholly to this code will appear, otherwise refer to the listings section for other numbers.
There are 54 batches recorded as being wholly to this TOPS code (including any sub-codes).

Numbers	Class	Design	Type	Qty	Origin	Built/Converted	Date/s	Lot
18005-18038r	AA21	AA201	Mk 1 Corridor Second (SK)	7	Renumbered	-	1983
18087-18162r	AA21	AA202	Mk 1 Corridor Second (SK)	7	Renumbered	-	1983
18171-18241r	AA21	AA202	Mk 1 Corridor Second (SK)	5	Renumbered	-	1983
18248-18274r	AA21	AA201	Mk 1 Corridor Second (SK)	12	Renumbered	-	1983
18282	AA21	AA204	Mk 1 Corridor Second (SK)	1	Renumbered	-	1983
18283-18401r	AA21	AA201	Mk 1 Corridor Second (SK)	53	Renumbered	-	1983
18403-18449r	AA21	AA201	Mk 1 Corridor Second (SK)	26	Renumbered	-	1983
18458-18505r	AA21	AA201	Mk 1 Corridor Second (SK)	8	Renumbered	-	1983
18558-18703r	AA21	AA201	Mk 1 Corridor Second (SK)	72	Renumbered	-	1983
18704-18905r	AA21	AA201	Mk 1 Corridor Second (SK)	187	Renumbered	-	1983
18906-18971r	AA21	AA202	Mk 1 Corridor Second (SK)	56	Renumbered	-	1983
18973-19059r	AA21	AA201	Mk 1 Corridor Second (SK)	60	Renumbered	-	1983
19061-19137r	AA21	AA202	Mk 1 Corridor Second (SK)	38	Renumbered	-	1983
19138-19217r	AA21	AA201	Mk 1 Corridor Second (SK)	34	Renumbered	-	1983
24000-24179	AA21	146	Mk.1 Corridor Second (SK)	180	New	BR, Derby	1951	30002
24180-24219	AA21	146	Mk.1 Corridor Second (SK)	40	New	BR, Doncaster	1952	30015
24220-24301	AA21	146	Mk.1 Corridor Second (SK)	82	New	BR, York	1952	30026
24302-24331	AA21	146	Mk.1 Corridor Second (SK)	30	New	BR, Ashford/Eastleigh	1952	30020
24332-24396	AA21	146	Mk.1 Corridor Second (SK)	65	New	Birmingham RC&W	1953	30007
24397-24436	AA21	146	Mk.1 Corridor Second (SK)	40	New	BR, Derby	1953	30030
24437-24446	AA21	146	Mk.1 Corridor Second (SK)	10	New	BR, Wolverton	1953	30072
24447-24468	AA21	146	Mk.1 Corridor Second (SK)	22	New	BR, Swindon	1954	30088
24469-24538	AA21	146	Mk.1 Corridor Second (SK)	70	New	BR, York	1955	30070
24539-24548	AA21	147	Mk.1 Corridor Second (SK)	10	New	BR, York	1952	30068
24549-24556	AA21	146	Mk.1 Corridor Second (SK)	8	New	BR, York	1955	30070
24557-24568	AA21	146	Mk.1 Corridor Second (SK)	12	New	BR, York	1952	30044
24569-24575	AA21	146	Mk.1 Corridor Second (SK)	7	New	BR, York	1955	30070
24576-24675	AA21	146	Mk.1 Corridor Second (SK)	100	New	Birmingham RC&W	1954	30057
24676-24700	AA21	146	Mk.1 Corridor Second (SK)	25	New	Cravens	1953	30058
24701-24720	AA21	147	Mk.1 Corridor Second (SK)	20	New	Cravens	1953	30059
24721-24745	AA21	146	Mk.1 Corridor Second (SK)	25	New	BR, Wolverton	1953	30073
24746-24753	AA21	147	Mk.1 Corridor Second (SK)	8	New	BR, Swindon	1954	30077
24754-24795	AA21	146	Mk.1 Corridor Second (SK)	42	New	BR, Swindon	1954	30078
24796-24818	AA21	146	Mk.1 Corridor Second (SK)	23	New	Birmingham RC&W	1955	30137
24819-24944	AA21	146	Mk.1 Corridor Second (SK)	126	New	BR, Derby	1956	30153
24945-24974	AA21	146	Mk.1 Corridor Second (SK)	30	New	BR, Derby	1956	30154
24975-25044	AA21	146	Mk.1 Corridor Second (SK)	70	New	BR, Derby	1956	30208
25045-25164	AA21	147	Mk.1 Corridor Second (SK)	120	New	BR, Wolverton	1956	30155
25165-25247	AA21	147	Mk.1 Corridor Second (SK)	83	New	Metro-Cammell	1957	30230
25248-25279	AA21	146	Mk.1 Corridor Second (SK)	32	New	Metro-Cammell	1958	30231
25280-25282	AA21	150	Mk.1 Corridor Second (SK)	3	New	Metro-Cammell	1958	30494
25283-25402	AA21	146	Mk.1 Corridor Second (SK)	120	New	BR, Wolverton	1957	30349
25403-25454	AA21	146	Mk.1 Corridor Second (SK)	52	New	BR, Wolverton	1957	30350
25455	AA21	148	Mk.1 (prototype) Corridor Second (SK)	1	New	Metro-Cammell	1957	30356
25456	AA21	149	Mk.1 (prototype) Corridor Second (SK)	1	New	Gloucester RCW	1957	30358
25457	AA21	151	Mk.1 (prototype) Corridor Second (SK)	1	New	BR, Doncaster	1957	30371
25458-25507	AA21	146	Mk.1 Corridor Second (SK)	50	New	BR, York	1958	30374
25508-25509	AA21	152	XP64 Corridor Second (SK)	2	New	BR, Derby	1964	30737
25558-25703	AA21	146	Mk.1 Corridor Second (SK)	146	New	BR, Wolverton	1958	30426
25704-25905	AA21	146	Mk.1 Corridor Second (SK)	202	New	BR, Derby	1962	30685
25906-25972	AA21	147	Mk.1 Corridor Second (SK)	67	New	BR, Derby	1962	30686
25973-26059	AA21	146	Mk.1 Corridor Second (SK)	87	New	BR, Derby	1962	30719
26060-26137	AA21	147	Mk.1 Corridor Second (SK)	78	New	BR, Derby	1963	30720
26138-26217	AA21	146	Mk.1 Corridor Second (SK)	80	New	BR, York	1963	30726

Profiles ?Profiles provide an overview of the histories of various types of train. Profiles that are relevant to this TOPS class/code are listed below. If no profiles are shown, try looking under the parent code (in main details section above)

Photos - Internal
There are 2 photos of this type (including any sub-codes).

Photos - External
No external photos of this item yet.

Listings
There are 131 listings (with 130 distinct numbers) for this TOPS code/class (including any sub-codes).

Notes
No notes have been left yet. ?There may be some notes posted but which have not yet been approved.

Related Information
To be added

Dimensions ?Dimensions are normally recorded against design/diagram numbers. They can be recorded against batches, lots or TOPS codes if the design/diagram is not available.
There are no dimensions recorded for this TOPS code.

Drawings ?Drawings are normally referenced to specific design/diagram numbers. They can be recorded against batches, lots or TOPS codes if the design/diagram is not available. If no drawings are listed here, try looking at related designs/diagrams (above).
There are no drawings referenced for this TOPS code.

Data History
Record added 01/01/2020 by Thomas Young

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Record edited 1 time.

Time / Date	Edited by	Change
14:32 on Sun 05/09/2021	Thomas Young	Key photo added