Loco Specific Information
Built By	English Electric at The Vulcan Foundry
Build Number	EE 3776 / VF D1147
To British Rail / To Service	23.01.1968 / 30.03.1968	D406
TOPS Renumbered	04.03.1974	50006
Time In Service	19 years, 3 months, 18 days	7,049 days
Engine Hours	7,935
Nameplate	Neptune	Fitted	25.09.1979

 

First Noted Working Found

 

Works & Exam History
1	Light Repair	Entry Prior 25.01.1970 / Release Prior 14.06.1970	ZC	Crewe Works
2	Light Repair	Entry After 08.11.1970 / Release 03.03.1970	ZC	Crewe Works
3	Light Repair	Entry Prior 19.09.1971 / Release 19.09.1971	ZC	Crewe Works
4	Light Repair	Entry Prior 27.12.1971 / Release Prior 30.01.1972	ZC	Crewe Works
5	Intermediate	Entry Prior 08.04.1973 / Release 05.06.1973	ZC	Crewe Works
6	Light Repair	Entry Prior 11.08.1974 / Release Prior 22.09.1974	ZC	Crewe Works
7	Light Repair	Entry xx.xx.1976 / Release 16.09.1976	ZC	Crewe Works
8	Testbed Mods / Refurbishment	Entry Prior 09.10.1977 / Release Prior 13.11.1979	ZF	Doncaster Works
9	Light Repair	Entry Prior 27.09.1980 / Release 09.11.1980	ZF	Doncaster Works
10	Intermediate	Entry Prior 21.11.1983 / Release 17.02.1984	ZF	Doncaster Works

 

Last known working before and after a repair
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9	Friday	26th September 1980	1S27 0722 Plymouth - Edinburgh Waverley between Plymouth - York
9	Monday	10th November 1980	1V93 0950 Edinburgh Waverley - Plymouth between York - Plymouth
10
10

 

Last Working
Thursday	04th June 1987	1V07 0700 London Waterloo - Exeter St Davids between London Waterloo - Pinhoe Failed generator fire

 

Post Service
Withdrawn	04.06.1987		Main Generator Failure
Condemned	20.07.1987
Cut Up	03.1998	At	Vic Berry (Leicester)

 

Identification Markings & Notes

In 1977, Class 50 006 (later named Neptune) entered Doncaster Works to serve as the primary testbed for the fleet's major refurbishment program, the locomotive

remained at "The Plant" for an extended period to trial modifications designed to solve chronic reliability issues.

50 006 emerged with a blanking plate where the headlight would be later fitted at Laira.

Allocations / Sectors
Date	Area / Depot	Depot Code	Time Spent at Depot
28.03.1968	Allocated to Crewe Diesel	CD
11.05.1974	Reallocated to Bristol Bath Road	BR
18.05.1974	Reallocated to Laira	LA
25.05.1974	Reallocated to Crewe Diesel	CD
07.02.1976	Reallocated to Laira	LA
	Sector Code		Sector
05.1987	DXXA		Departmental

Liveries
		Notes
Date From		Earliest Date Noted	Latest Date Noted
28.03.1968	Standard British Rail Blue	From New 1968	05th August 1982 Exeter
	Large Logo British Rail Blue with Grey Roof	24th March 1984 at Cheltenham	15th March 1986 at Exeter
	Large Logo British Rail Blue with Black Roof	31st March 1986 at Taunton	Withdrawn June 1987

Photos
Standard British Rail Blue	Nameplate
Photo: