AD 2014-12-11 Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

This AD revises AD 2014-12-11, Amendment 39-17872 (79 FR 45085, August 4, 2014).

Within 90 days, revise the Operating Limitations section of Sikorsky Rotorcraft Flight Manual (RFM) SA S92A-RFM-003, Part 1, Section I, by inserting a copy of this AD into the RFM or by making pen and ink changes, as follows: (1) In the “Types of Operation” section, beneath Hoist, add the following: “The hoist equipment certification installation approval does not constitute approval to conduct hoist operations. Operational approval for hoist operations must be granted by the Federal Aviation Administration. No cabin seats may be installed in front of station 317 when conducting Human External Cargo hoist operations, which requires Category A performance capabilities.” (2) In the “Flight Limits” section, add the following: “ “HOIST” When conducting Human External Cargo operations, which require category `A' performance capabilities, the minimum hover height is 20 feet AGL and the maximum hover height is 80 feet AGL. “HOIST” The collective axis must remain uncoupled when conducting Human External Cargo, which requires category `A' performance capabilities, for the period of time that the person is off the ground or water and not in the aircraft. This can be accomplished by either uncoupling the collective axis or by the pilot depressing the collective trim switch during the pertinent portion of the maneuver.” (3) In the “Weight Limits” section: (i) Remove the following: “NOTE: The 150 pound hoist decrement does not preclude Cat A operations at a gross weight of 26,500 pounds with a hoist installed. If conditions permit, the pilot may go to the right of the 26,500 line on Figure 1-2 to determine a maximum gross weight up to 26,650 and then subtract 150 pounds.” (ii) Add the following: “NOTE: If conditions permit, the pilot may go to the right of the 26,500 pound line on Figure 1-2 to determine the maximum gross weight and then subtract a 150 pound hoist decrement. The maximum gross weight for category `A' operations cannot exceed 26,500 pounds (12,020 kilograms).” (iii) Add the following and insert Figure 1 to Paragraph (f)(3)(iii) of this AD: “ “HOIST” Maximum gross weight for Human External Cargo, which requires category `A' performance capabilities, is limited to the gross weight determined in accordance with the following Figure 1 to Paragraph (f)(3)(iii) of this AD for your altitude and temperature with the air-conditioner, anti-ice, and bleed air turned off.” Note 1 to paragraph (f)(3)(iii) of this AD: Figure 1 to Paragraph (f)(3)(iii) of this AD becomes Figure 1-2A when inserted in the “Weight Limits” section of your RFM. BILLING CODE 4910-13-P ER06FE15.000

Incorporation of the changes contained in Sikorsky RFM SA S92A-RFM-003, Part 1, Revision No. 12, approved December 9, 2010, before the effective date of this AD is considered acceptable for compliance with the corresponding actions specified in paragraph (f) of this AD.

You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.

This AD defines the unsafe condition as an inaccurate Rotorcraft Flight Manual (RFM) provision, which was approved without appropriate limitations for this model helicopter for carrying Class D external rotorcraft-load combinations, including Human External Cargo (HEC), when this model helicopter was not certificated to Category A one-engine inoperative (OEI) performance standards, including fly away capabilities after an engine failure, which is required for carrying HEC.