STC SH5974NM

Number SH5974NM This certificate, issued to Erickson Air-Crane, Inc.

P.O. Box 3247 Central Point, OR 97502 Part 29 of the Federal Aviation Regulations.

Original ProductType Certificate Number: H6EA Make: Sikorsky Model: S-64F

Description of the Type Design Change: Replacement of the existing combustion type cockpit heater with an engine bleed air type heater system in accordance with FAA approved Erickson Air-Crane Master Drawing List No. 1268, dated February 1, 2001, or later FAA approved revision.

Limitations and Conditions: Approval of this change in type design applies to the Model S-64F rotorcraft only. This approval should not be extended to rotorcraft of this model on which other previously approved modifications are incorporated unless it is determined that the relationship between this change and any of those other previously approved modifications, including changes in type design, will introduce no adverse effect upon the airworthiness of that rotorcraft. Rotorcraft equipped with this modification must be operated in accordance with an FAA approved copy of Revision 1 of the Erickson Rotorcraft Flight Manual Supplement (RFMS) for this installation, dated July 20, 2001, or later FAA approved revision. A copy of this Certificate and FAA approved RFMS must be maintained as part of the permanent records for the modified rotorcraft.

If the holder agrees to permit another person to use this certificate to alter the product, the holder shall give the other person written evidence of that permission.

This certificate and the supporting data which is the ba sis for approval shall remain in effect until surrendered, suspended, revoked, or a termination date is ot herwise established by the Administrator of the Federal Aviation Administration.

Date of application: January 8, 1993 Date reissued:

Date of issuance: October 25, 1993 Date amended: July 20, 2001

Acting Manager, Seattle Aircraft Certification Office

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