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IT-1991-056 : Main Rotor Drive - Main Rotor Transmission Bolts - Inspection / Replacement

Number IT-1991-056
Issued by Italy  Italy
Issue date 1991-02-15
Effective date 1991-02-15
EASA approval number
ATA Chapter 63
Approval Holder
/ Type Designation
  • MECAER AVIATION GROUP SpA
    • NH-500D
Revision Not applicable
Correction Not applicable
Supersedure None
Publication(s) and related information MDHC Service Information Notice (SIN) DN-166.1, EN-57.1 and SIN FN-45.1 dated 14 May 1990 or later approved revisions. FAA AD 90-24-07.
Remarks Comments regarding this AD should be referred to the Safety Information Section, Certification Directorate, EASA;
E-mail: ADs [at] easa.europa [dot] eu

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