ASB UH-1H-18-20 Main Rotor Blades -113

ALERT SERVICE BULLETIN UH-1H-18-20 23 October 2018 MODEL AFFECTED: UH-1H SUBJECT: MAIN ROTOR BLADE 204-011-250-113, INTRODUCTION OF DAILY WIPE DOWN INSPECTION AND SPECIAL 25 HOUR INSPECTION.

HELICOPTERS AFFECTED: ALL UH-1H’s WITH SUBJECT BLADE INSTALLED.

COMPLIANCE: Part I: At the next daily inspection and every daily inspection thereafter. Part II: Within the next 25 flight hours and every 25 flight hours thereafter.

DESCRIPTION: Bell has recently been informed of two main rotor blades P/N 204-011-250-113 with chordwise cracks originating from the extreme trailing edge outside of the current inspection area between blade station 190 and 210. Applicability of this bulletin to any spare part shall be determined prior to its installation on an affected helicopter.

APPROVAL: The engineering design aspects of this bulletin are Bell Helicopter Engineering approved.

CONTACT INFO: For any questions regarding this bulletin, please contact: Bell Product Support Engineering - Medium Military Helicopters Tel: 817-280-3548 / mts-medium@bellflight.com

Full documents ALERT SERVICE BULLETIN UH-1H-18-20 SPECIAL AIRWORTHINESS INFORMATION BULLETIN SUBJ: Rotorcraft Tail Boom, Attach Structure Failure SAIB:SW-18-29

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