This is taken from SFB Captain's Log #12 and it involves Klingon Z1 fighters, which I've included. They aren't mine and were downloaded nearly a decade ago, from a long closed SFC shipyard website. You will need to add the Z1 fighter to you Klingon models folder and also copy & paste the ship specs line into your SFC 1 game's shiplist file.
The scenario can be played as the Federation or as one of the Airsisian defence fighter squadrons (Win A Few, Lose A Lot 2).
The scenario is winnable, playing as either side, provided you come up with an effective cunning plan.
The Federation aspect of the scenario:
The planet, Airsis IV, is well within the boundaries of Federation, although near the Klingon border. The planet has only basic space flight capabilities with no Warp Drive and so is deemed not suitable for first contact yet. It is, however, kept under close observation via covert monitoring devices.
Recently. Starfleet lost signals from these devices, so a destroyer has been sent to discover why.