Abstract: A tank assembly for a helicopter is provided. The tank assembly comprises a retractable tank for storing liquid or other substances, an attachment mechanism, and first and second struts. The retractable tank comprises an upper frame structure. The attachment mechanism is attached to the upper frame structure and is configured to engage a cargo hook mount on the underside of the fuselage of the helicopter. The first and second struts extend from respective opposing sides of the upper frame structure. Each of the first and second struts is configured to engage a respective side mount on the fuselage of the helicopter.

Abstract: There is provided a tank assembly for a helicopter. The tank assembly comprises a retractable tank for storing liquid or other substances, a first attachment mechanism, a second attachment mechanism and a third attachment mechanism. The retractable tank has an upper frame structure with forward and rearward ends. The first attachment mechanism, is attached to the upper frame structure towards the forward end and configured to engage a first cargo hook mount. The second attachment mechanism is attached to the upper frame structure towards the rearward end and configured to engage a second cargo hook mount. The third attachment mechanism is attached to the upper frame structure between the first and second attachment mechanisms and configured to engage a third cargo hook mount.

Abstract: A cargo hook assembly for a helicopter is provided. The cargo hook assembly comprises a support structure having a forward end portion and a rearward end portion, and an attachment mechanism attached to the rearward end portion. The attachment mechanism is configured to engage a cargo hook mount on the underside of the fuselage of the helicopter. The cargo hook assembly further comprises first and second struts extending from respective opposing sides of the forward end portion. Each of the first and second struts is configured to engage a respective side mount on the fuselage of the helicopter. The cargo hook assembly also comprises a cargo hook suspended from the support structure.

Abstract: A tank assembly for a helicopter is provided. The tank assembly comprises a retractable tank for storing liquid or other substances. The retractable tank comprises an upper frame structure. The tank assembly further comprises an attachment mechanism attached to the upper frame structure and configured to engage a main rotor transmission of the helicopter to suspend therefrom. A helicopter comprising a fuselage, a main rotor transmission, and a tank assembly is also provided.

Abstract: A cargo hook assembly for a helicopter is provided. The cargo hook assembly comprises a support structure having a forward end portion and a rearward end portion, and an attachment mechanism attached to the rearward end portion. The attachment mechanism is configured to engage a cargo hook mount on the underside of the fuselage of the helicopter. The cargo hook assembly further comprises first and second struts extending from respective opposing sides of the forward end portion. Each of the first and second struts is configured to engage a respective side mount on the fuselage of the helicopter. The cargo hook assembly also comprises a cargo hook suspended from the support structure.

Abstract: A tank assembly for a helicopter is provided. The tank assembly comprises a retractable tank for storing liquid or other substances, an attachment mechanism, and first and second struts. The retractable tank comprises an upper frame structure. The attachment mechanism is attached to the upper frame structure and is configured to engage a cargo hook mount on the underside of the fuselage of the helicopter. The first and second struts extend from respective opposing sides of the upper frame structure. Each of the first and second struts is configured to engage a respective side mount on the fuselage of the helicopter.