HelicoptersPhotos Photos Sikorsky S-76 in HeliFlite Sikorsky S-76B N13HF 15Mar21 pictured (pic1) Leaving Frederick Sikorsky S-76B N13HF 15Mar21 pictured (pic1) Leaving Frederick Sikorsky S-76B N18HF pictured (pic1) - arrived at Frederick Airport HeliFlite Sikorsky S-76B N18HF pictured (pic1) - arrived at Frederick Airport HeliFlite Sikorsky S-76C N35HF 28Feb22 pictured (pic1) departed to Leesburg, VA Sikorsky S-76C N35HF 28Feb22 pictured (pic1) departed to Leesburg, VA