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NORFOLK SOUTHERN
DIESEL LOCOMOTIVE ROSTER

EMD/NS SD70ACU Nos. 7229-7328

84 Units Active (2 of those are currently stored)

16 Additional units undergoing rebuilding (see bottom of roster)

 

This roster compiled and maintained by Chris R. Toth. 
Roster last updated on October 15, 2017.

 


Active Roster

 
Road No. Rebuilt From Rebuild Date Rebuilt By Original Build Date Order
No.		 Builder
No.		 Notes
7229 NS SD90MAC 7229/UP 3481/UP 8015 08-2016 NS 01-1996 936449 936449-16 See numbering note at bottom of roster.
7231 NS SD90MAC 7231/UP 3471/UP 8001 02-2017 NS 11-1995 936449 936449-2  
7232 NS SD90MAC 7232/UP 3472/UP 8002 03-2017 NS 01-1996 936449 936449-3  
7233 NS SD90MAC 7233/UP 3494/UP 8003 04-2017 NS 01-1996 936449 936449-4  
7234 NS SD90MAC 7234/UP 3474/UP 8004 11-2016 NS 01-1996 936449 936449-5  
7235 NS SD90MAC 7235/UP 3490/UP 8005 06-2016 NS 01-1996 936449 936449-6  
7236 NS SD90MAC 7236/UP 3476/UP 8006 11-2016 NS 01-1996 936449 936449-7  
7237 NS SD90MAC 7237/UP 3477/UP 8007 05-2017 NS 01-1996 936449 936449-8  
7238 NS SD90MAC 7238/UP 3478/UP 8008 09-2017 NS 01-1996 936449 936449-9  
7241 NS SD90MAC 7241/UP 3487/UP 8011 02-2017 NS 01-1996 936449 936449-12  
7242 NS SD90MAC 7242/UP 3485/UP 8012 11-2016 NS 01-1996 936449 936449-13  
7243 NS SD90MAC 7243/UP 3483/UP 8013 09-2016 NS 01-1996 936449 936449-14  
7244 NS SD90MAC 7244/UP 3484/UP 8014 11-2016 NS 01-1996 936449 936449-15  
7245 NS SD90MAC 7245/UP 3488/UP 8016 06-2016 NS 02-1996 936449 936449-17  
7246 NS SD90MAC 7246/UP 3473/UP 8017 12-2016 NS 02-1996 936449 936449-18  
7247 NS SD90MAC 7247/UP 3489/UP 8018 04-2017 NS 02-1996 936449 936449-19  
7248 NS SD90MAC 7248/UP 3493/UP 8019 01-2016 NS 02-1996 936449 936449-20  
7249 NS SD90MAC 7249/UP 3475/UP 8020 12-2016 NS 02-1996 936449 936449-21  
7250 NS SD90MAC 7250/UP 3529/UP 8021 04-2016 NS 02-1996 936449 936449-22  
7252 NS SD90MAC 7252/UP 3491/UP 8023 07-2016 NS 02-1996 936449 936449-24  
7253 NS SD90MAC 7253/UP 3492/UP 8024 10-2016 NS 03-1996 936449 936449-25  
7254 NS SD90MAC 7254/UP 3518/UP 8035 12-2016 Progress Rail 06-1996 956613 956613-11  
7256 NS SD90MAC 7256/UP 3499/UP 8027 03-2016 NS 06-1996 956613 956613-3  
7257 NS SD90MAC 7257/UP 3500/UP 8028 06-2017 NS 06-1996 956613 956613-4  
7258 NS SD90MAC 7258/UP 3501/UP 8029 04-2016 NS 06-1996 956613 956613-5  
7259 NS SD90MAC 7259/UP 3502/UP 8030 09-2016 NS 06-1996 956613 956613-6  
7260 NS SD90MAC 7260/UP 3504/UP 8031 07-2017 NS 06-1996 956613 956613-7  
7261 NS SD90MAC 7261/UP 3505/UP 8032 07-2016 NS 06-1996 956613 956613-8  
7262 NS SD90MAC 7262/UP 3509/UP 8033 07-2016 NS 06-1996 956613 956613-9  
7263 NS SD90MAC 7263/UP 3517/UP 8034 03-2016 NS 06-1996 956613 956613-10  
7264 NS SD90MAC 7264/UP 3520/UP 8036 02-2016 NS 06-1996 956613 956613-12  
7265 NS SD90MAC 7265/UP 3523/UP 8037 05-2016 NS 08-1996 956613 956613-13  
7266 NS SD90MAC 7266/UP 3525/UP 8038 07-2016 NS 08-1996 956613 956613-14  
7267 NS SD90MAC 7267/UP 3526/UP 8039 06-2016 NS 08-1996 956613 956613-15  
7268 NS SD90MAC 7268/UP 3527/UP 8040 07-2016 NS 08-1996 956613 956613-16  
7270 NS SD90MAC 7270/UP 3482/UP 8042 06-2016 NS 08-1996 956613 956613-18  
7271 NS SD90MAC 7271/UP 3534/UP 8043 11-2016 NS 08-1996 956613 956613-19  
7272 NS SD90MAC 7272/UP 3535/UP 8044 03-2017 Progress Rail 08-1996 956613 956613-20 Released from rebuilding by Progress Rail 03-2017. Currently stored at Altoona for paint and final testing.
7273 NS SD90MAC 7273/UP 3536/UP 8045 07-2016 NS 08-1996 956613 956613-21  
7274 NS SD90MAC 7274/UP 3537/UP 8046 09-2016 NS 08-1996 956613 956613-22  
7275 NS SD90MAC 7275UP 3539/UP 8047 06-2017 NS 08-1996 956613 956613-23  
7276 NS SD90MAC 7276/UP 3543/UP 8048 03-2016 NS 08-1996 956613 956613-24  
7277 NS SD90MAC 7277/UP 3495/UP 8049 11-2016 NS 08-1996 956613 956613-25  
7278 NS SD90MAC 7278/UP 3542/UP 8050 03-2017 Progress Rail 08-1996 956613 956613-26 Released from rebuilding by Progress Rail 03-2017. Currently stored at Altoona for paint and final testing.
7279 NS SD90MAC 7279/UP 3510/UP 8051 08-2016 NS 08-1996 956613 956613-27  
7280 NS SD90MAC 7280/UP 3496/UP 8052 09-2017 NS 08-1996 956613 956613-28  
7281 NS SD90MAC 7281/UP 3497/UP 8053 07-2017 NS 08-1996 956613 956613-29  
7282 NS SD90MAC 7282/UP 3503/UP 8054 03-2016 NS 08-1996 956613 956613-30  
7283 NS SD90MAC 7283/UP 3506/UP3587/UP 8055 01-2016 NS 08-1996 956613 956613-31  
7284 NS SD90MAC 7284/UP 3507/UP 8056 08-2017 NS 08-1996 956613 956613-32  
7285 NS SD90MAC 7285/UP 3508/UP 8057 12-2016 Progress Rail 08-1996 956613 956613-33  
7286 NS SD90MAC 7286/UP 3511/UP 8058 02-2016 NS 08-1996 956613 956613-34  
7290 NS SD90MAC 7290/UP 3515/UP 8062 06-2016 NS 08-1996 956613 956613-38  
7291 NS SD90MAC 7291/UP 3516/UP 8063 08-2017 NS 08-1996 956613 956613-39  
7292 NS SD90MAC 7292/UP 3519/UP 8064 05-2016 NS 08-1996 956613 956613-40  
7293 NS SD90MAC 7293/UP 3521/UP 8065 07-2016 NS 09-1996 956613 956613-41  
7294 NS SD90MAC 7294/UP 3522/UP 8066 06-2016 NS 09-1996 956613 956613-42  
7296 NS SD90MAC 7296/UP 3530/UP 8068 10-2016 NS 08-1996 956613 956613-44  
7297 NS SD90MAC 7297/UP 3531/UP 8069 04-2016 NS 09-1996 956613 956613-45  
7298 NS SD90MAC 7298/UP 3532/UP 8070 08-2016 NS 09-1996 956613 956613-46  
7300 NS SD90MAC 7300/UP 3538/UP 8072 07-2017 NS 09-1996 956613 956613-48  
7301 NS SD90MAC 7301/UP 3540/UP 8073 07-2017 NS 09-1996 956613 956613-49  
7302 NS SD90MAC 7302/UP 3541/UP 8074 04-2017 NS 09-1996 956613 956613-50  
7303 NS SD90MAC 7303/UP 3549/UP 8078 04-2017 NS 01-1997 966714 966714-4  
7304 NS SD90MAC 7304/UP 3550/UP 8079 01-2017 NS 02-1997 966714 966714-5  
7305 NS SD90MAC 7305/UP 3593/UP 8104 05-2016 NS 03-1997 966714 966714-30  
7306 NS SD90MAC 7306/UP 3608/UP 8111 02-2017 NS 03-1997 966714 966714-37  
7307 NS SD90MAC 7307/UP 3621/UP 8119 06-2017 NS 04-1997 966714 966714-45  
7308 NS SD90MAC 7308/UP 3637/UP 8140 01-2017 NS 04-1997 966714 966714-66  
7309 NS SD90MAC 7309/UP 3620/UP 8142 08-2016 NS 04-1997 966714 966714-68  
7311 NS SD90MAC 7311/UP 8153 04-2017 NS 05-1997 966714 966714-79  
7312 NS SD90MAC 7312/UP 3579/UP 8161 01-2017 NS 06-1997 966714 966714-87  
7314 NS SD90MAC 7314/UP 3631/UP 8176 09-2016 NS 07-1997 966714 966714-102  
7316 NS SD90MAC 7316/UP 3656/UP 8187 10-2016 NS 01-1998 976800 976800-9  
7317 NS SD90MAC 7317/UP 3661/UP 8191 01-2017 NS 01-1998 976800 976800-13  
7318 NS SD90MAC 7318/UP 8193 02-2017 NS 01-1998 976800 976800-15  
7319 UP SD9043AC 8247 02-2016 NS 04-1998 976800 976800-69 See numbering note at bottom of roster.
7320 NS SD90MAC 7320/UP 8200 04-2016 NS 01-1998 976800 976800-22  
7321 NS SD90MAC 7321/UP 8216 05-2017 NS 02-1998 976800 976800-38  
7322 NS SD90MAC 7322/UP 3695/UP 8218 03-2017 NS 02-1998 976800 976800-40  
7324 NS SD90MAC 7324/UP 3704/UP 8224 04-2016 NS 02-1998 976800 976800-46  
7326 NS SD90MAC 7326/UP 3673/UP 8259 10-2016 NS 04-1998 976800 976800-81  
7327 NS SD90MAC 7327/UP 8261 04-2016 NS 04-1998 976800 976800-83  
7328 NS SD90MAC 7328/UP 8263 04-2017 NS 04-1998 976800 976800-85  
Additional units currently undergoing rebuilding
(Units not yet completed and released to the active roster)
(7230) NS SD90MAC 7230/UP 3470/UP 8000 -- NS 01-1996 936449 936449-1 Rebuilding complete; undergoing sandblasting and paint.
(7239) NS SD90MAC 7239/UP 3479/UP 8009 -- NS 01-1996 936449 936449-10 Rebuilding complete; waiting to go to sandblasting and paint.
(7240) NS SD90MAC 7240/UP 3480/UP 8010 -- NS 01-1996 936449 936449-11 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7251) NS SD90MAC 7251/UP 3486/UP 8022 -- NS 03-1996 936449 936449-23 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7255) NS SD90MAC 7255/UP 3498/UP 8026 -- NS 06-1996 956613 956613-2 Undergoing rebuilding - 06-2017.
(7269) NS SD90MAC 7269/UP 3528/UP 8041 -- NS 08-1996 956613 956613-17 Undergoing rebuilding - 02-2017, but set aside for repairs to its engine due to heavy freeze damage; back undergoing rebuilding 09-2017.
(7287) NS SD90MAC 7287/UP 3512/UP 8059 -- NS 08-1996 956613 956613-35 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7288) NS SD90MAC 7288/UP 3513/UP 8060 -- NS 08-1996 956613 956613-36 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7289) NS SD90MAC 7289/UP 3514/UP 8061 -- NS 08-1996 956613 956613-37 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7295) NS SD90MAC 7295/UP 3524/UP 8067 -- NS 09-1996 956613 956613-43 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7299) NS SD90MAC 7299/UP 3533/UP 8071 -- NS 09-1996 956613 956613-47 Rebuilding complete; waiting to go to sandblasting and paint.
(7310) NS SD90MAC 7310/UP 3544/UP 8148 -- NS 04-1997 966714 966714-74 Rebuilding complete; waiting to go to sandblasting and paint.
(7313) NS SD90MAC 7313/UP 3627/UP 8175 -- NS 07-1997 966714 966714-101 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7315) NS SD90MAC 7315/UP 3641/UP 8178 -- NS 07-1997 966714 966714-104 Rebuilding complete; waiting to go to sandblasting and paint.
(7323) NS SD90MAC 7323/UP 3697/UP 8219 -- NS 02-1998 976800 976800-41 Rebuilding complete, repainted, and awaiting release to service following final testing.
(7325) NS SD90MAC 7325/UP 3715/UP 8231 -- NS 02-1998 976800 976800-53 Rebuilding complete; waiting to go to sandblasting and paint.


General Info

NS Model Designation = SD70ACU
Horsepower = 4,500 (see note below)
Fuel Tank Capacity = 4,700 gallons (see note below)
Maximum Weight = See note below
Dynamic Braking = Yes
Control = Single
Cab Signals = Yes
LSL (Locomotive Speed Limiter) = Yes
Air Conditioning = Yes
Units are powered by an EMD 16-cylinder 710G3C-ES engine.

Units that have received a full engine overhaul meet Tier 1+ emission standards, while units that
have not yet received a full engine overhaul meet Tier 0+ emission standards. While all of the rebuilds are
being upgraded to 4,500 traction horsepower, the Tier 0+ units generally only make 4,300-4,400 horsepower.
Those units that have been overhauled and meet Tier 1+ emission standards are:
7233, 7235, 7242, 7243, 7250, 7253, 7254, 7258, 7291, 7293, 7296, 7298, 7305, 7308, 7319

As originally built by EMD, the SD90MAC had a fuel tank capacity of 5,700 gallons. While owned by Union Pacific,
the units started developing cracks in the frames around the fuel tank mounts.  UP worked with EMD to solve the
frame cracking problem by adding additional mounting brackets between the frame and fuel tank. In addition, the fuel
filler pipes were modified to only allow a maximum of 4,700 gallons of fuel to be added.

As originally built by EMD, the SD90MAC had a maximum weight of 415,000 pounds. After being rebuilt in
the SD70ACU program, the maximum weight initially increased to 420,000 pounds due to the additional weight
of the new widenose and cab.  Starting with the 35th SD70ACU rebuild, NS began adding additional weight to
each end of the units to increase the maximum weight to 432,000 pounds. The first 34 units will also have the
additional weight added as shop time permits. Those units that have received the additional weight are:
7231, 7232, 7233, 7234, 7236, 7237, 7241, 7242, 7243, 7244, 7246, 7247, 7249, 7253, 7254, 7257, 7259,
7260, 7266, 7271, 7272, 7274, 7275, 7277, 7278, 7280, 7281, 7284, 7285, 7291, 7296, 7300, 7301, 7302,
7303, 7304, 7306, 7307, 7308, 7311, 7312, 7314, 7316, 7317, 7318, 7321, 7322, 7326, 7328

Original cab and electrical cabinet were replaced with new EMD SD70ACe style isolated cab,
AAR-style control stand, and electrical cabinet with Mitsubishi electronics.

Units retain their original TA22 main alternator and 1TB2830 traction motors.

Equipped CCB II computer controlled braking system.

Equipped with GE Ultra Cab II Cab Signaling and LSL (Locomotive Speed Limiter).

All units are equipped with NS LEADER/PTC (Positive Train Control) system.

Equipped for use in DPU (Distributed Power Unit) operation.

Equipped with Automatic Engine Stop/Start.

New electric parking brake added with brake wheel on the left side of the long hood.

Ditch lights added to the rear during rebuilding.

Numbering Notes

NS 7229 was added to the SD90MAC numbering in December 2014 when the former UP 3481/8015
was sent as a trade-in to EMD in place of former UP 3666/8196, which was to have become NS 7319. Since
the former UP 3481/8015 was from the first UP SD90MAC order, NS chose to number it as 7229.

NS SD90MAC 7329 was originally supposed to have been former UP 8274, but UP retained that unit
and sent UP 8247 to EMD in its place. The unit was delivered to NS as UP 8247 and was not renumbered or
placed in service as an NS unit prior to entering the NS SD70ACU capital rebuild program. It was
numbered 7319 to fill the open 7319 number slot to make the 7229-7328 series a solid group of 100 units.

 
 

 

 

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