| Function | Sounding rocket | 
|---|---|
| Manufacturer | Vought | 
| Country of origin | United States | 
| Size | |
| Height | 22 metres (72 ft) | 
| Diameter | 1.01 metres (3 ft 4 in) | 
| Mass | 17,000 kilograms (37,000 lb) | 
| Stages | Five | 
| Associated rockets | |
| Family | Scout | 
| Launch history | |
| Status | Retired | 
| Launch sites | Wallops LA-3 | 
| Total launches | 1 | 
| Successes | 1 | 
| Failures | 0 | 
| Launch date | 1962-03-01 | 
| First stage - Algol 1C | |
| Engines | 1 solid | 
| Thrust | 471 kilonewtons (106,000 lbf) | 
| Specific impulse | 236 sec | 
| Burn time | 40 seconds | 
| Fuel | Solid | 
| Second stage - Castor 1A | |
| Engines | 1 solid | 
| Thrust | 286 kilonewtons (64,000 lbf) | 
| Specific impulse | 247 sec | 
| Burn time | 27 seconds | 
| Fuel | Solid | 
| Third stage - Antares 1A | |
| Engines | 1 X-254 | 
| Thrust | 60 kilonewtons (13,000 lbf) | 
| Specific impulse | 256 sec | 
| Burn time | 39 seconds | 
| Fuel | Solid | 
| Fourth stage - Altair 1A | |
| Engines | 1 X-248A | 
| Thrust | 14 kilonewtons (3,100 lbf) | 
| Specific impulse | 255 sec | 
| Burn time | 40 seconds | 
| Fuel | Solid | 
| Fifth stage - NOTS-17 | |
| Engines | 1 solid | 
| Fuel | Solid | 
Scout X-1A was an American sounding rocket which was flown in 1962. It was a five-stage derivative of the earlier Scout X-1, with an uprated first stage, and a NOTS-17 upper stage.
The Scout X-1A used an Algol 1C first stage, instead of the earlier Algol 1B used on the Scout X-1. The second, third and fourth stages were the same as those used on the Scout X-1; a Castor 1A, Antares 1A and Altair 1A respectively. The fifth stage was the NOTS-17 solid rocket motor, which had been developed by the Naval Ordnance Test Station.
The Scout X-1A was launched on its only flight at 05:07 GMT on 1 March 1962. It flew from Launch Area 3 of the Wallops Flight Facility. The flight carried an atmospheric re-entry experiment to an apogee of 214 kilometres (133 mi), and was successful. Following this, the Scout X-1A was replaced by the Scout X-2.