D406 | 50006 Neptune

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
Thursday	13 June 1968	Inverness - Edinburgh	R.O. 474 p295

 

Works History & Service Working (Before & After)
1 — Crewe Works (1970)
1
	Before
	Works	Light Repair			Entry Prior 25.01.1970 / Release Prior 14.06.1970
	After
2 — Crewe Works (1970/1)
2
	Before
	Works	Light Repair			Entry After 08.11.1970 / Release 03.03.1971
	After
3 — Crewe Works (1971)
3
	Before
	Works	Light Repair			Entry Prior 19.09.1971 / Release 19.09.1971
	After
4 — Crewe Works (1971/2)
4
	Before
	Works	Light Repair			Entry Prior 27.12.1971 / Release Prior 30.01.1972
	After
5 — Crewe Works (1973)
5
	Before
	Works	Intermediate			Entry Prior 08.04.1973 / Release 05.06.1973
	After
6 — Crewe Works (1974)
6
	Before
	Works	Light Repair			Entry Prior 11.08.1974 / Release Prior 22.09.1974
	After
7 — Crewe Works (1976)
7
	Before
	Works	Light Repair			Entry Prior 22.08.1976 / Release 16.09.1976
	After
8 — Doncaster Works (1977/9)
8
	Before
	Works	Test Bed Mods/Refurbishment			Entry Prior 09.10.1977 / Release Prior 13.11.1979
	After
9 — Doncaster Works (1980)
9
	Before	26 Sep 1980			1S27 0722 Plymouth - Edinburgh Waverley between Plymouth - York
	Works	Light Repair			Entry Prior 27.09.1980 / Release 09.11.1980
	After	10 Nov 1980			1V93 0950 Edinburgh Waverley - Plymouth between York - Plymouth
10 — Doncaster Works (1983/4)
10
	Before
	Works	Intermediate			Entry Prior 21.11.1983 / Release 17.02.1984
	After

 

Last Passenger Duty (PD) / Last Working (LW)
PD	Thursday	04 June 1987	1V07 07:00 London Waterloo - Exeter St Davids between London Waterloo - Pinhoe Failed (generator fire)
LW	Thursday	04 June 1987	1V07 07:00 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Withdrawn	04.06.1987		Main Generator Failure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.

50006 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
xx.03.1968	Allocated to London Midland Western Lines	LMWL
xx.06.1968	Allocated to London Midland Stoke Division	D05
xx.05.1973	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
Date From	Livery	Earliest Date Noted	Latest Date Noted
28.03.1968	Standard British Rail Blue	From New 1968	13th August 1983 Old Oak Common
	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	30th March 1986 at Cogload Junction	Withdrawn June 1987

Damage / Accidents

Photos
Standard British Rail Blue	Nameplate
Photo: