Final answer:
The number of inches of unstowed suspension lines allowed on an automatic back parachute varies by model and manufacturer's guidelines, and precise adherence to these specifications is critical for safety.
Step-by-step explanation:
The question "How many inches of unstowed suspension lines should remain on the automatic back parachute?" is related to the field of aeronautical engineering and involves knowledge of parachute rigging and safety protocols.
In most cases, the suspension lines of a parachute should be stowed neatly to prevent tangling and ensure a proper deployment. However, specifications, such as how many inches can remain unstowed, can vary depending on the model of the parachute and manufacturer's guidelines. It's essential for safety reasons to adhere to these specifications precisely.
In general, unstowed lines could pose a risk during deployment, but the exact length that is permissible, if any, would be found in the operations manual or rigging instructions specific to that parachute.
For an automatic back parachute, which is often used in military or emergency scenarios, the tolerances for error can be quite stringent. It is crucial for personnel involved in packing and rigging parachutes to undergo proper training and follow the detailed guidelines provided by the manufacturer for each specific model of parachute they work with.