This cache is a bonus to the ALC series S1 G'Nal and the Spaceship Crash.
As you complete the stages for the ALC, you will find a single letter and the end of the completion message for each stage. When you have all ten letters, put them together as one word in the order crash site / insulation / in-flight entertainment module / ship hull / engines / fuel cube / ignition cable / vaporizer / helmet / navigator and enter this into certitude to get the final coordinates.
You can validate your solution with certitude.
If you want, you can also get the final coordinates without using certitude. When you have all ten letters, X is the sum of the letter values for each letter. You can then find this bonus cache here:
n58 24.7(X-17) e015 37.(X+160)