Applicability: Models 369D, 369E, 369F, 369FF,
500N, or 600N helicopters with either an MD Helicopter Inc. (MDHI)
main rotor blade installed or modified with Helicopter Technology
Company, LLC (HTC), Supplemental Type Certificate (STC) No.
SR09172RC, SR09074RC, or SR01050LA with an HTC blade installed, as
listed below:
Model MDHI blade part No. (P/N) HTC blade P/N HTC STC
369D 369D21100 Basic, -516, -517, -523 500P2100-BSC, -BSC-1
SR09172RC
369E 369D21120-501, -503 500P2100-101, -103 SR09074RC
369F, FF 369D21102 Basic, -503, -517, -523 500P2300-501, -503
SR01050LA 369D21121-501, -503
500N 369D21102-503, -517, -523 500P2300-501, -503 SR01050LA
369D21121-501, -503
600N 369D21102-517, -523 500P2300-501, -503 SR01050LA
369D211