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SIB CASA-2025-11 : Part Number MS20220-3 Pulleys with Corroded and Dislodged Bearings

Number CASA-2025-11
Issued by Canada  Canada
Issue date 2025-11-03
Effective date
EASA approval number
ATA Chapter
Approval Holder
/ Type Designation
  • DE HAVILLAND AIRCRAFT OF CANADA LTD.
    • DHC-8
      • DHC-8-101
      • DHC-8-102
      • DHC-8-103
      • DHC-8-106
      • DHC-8-201
      • DHC-8-202
      • DHC-8-301
      • DHC-8-311
      • DHC-8-314
      • DHC-8-315
      • DHC-8-400
      • DHC-8-401
      • DHC-8-402
  • Safety Information Bulletin
    • Airworthiness
      • Fixed Wings
Revision Not applicable
Correction Not applicable
Supersedure None
Publication(s) and related information SB 8-27-126 Rev NC - Flight Controls - Wing - Aileron and Spoiler Pulleys with Enhanced Corrosion Resistance - Retrofit - ModSum 8Q110350. SB 84-27-76 Rev NC - Flight Controls - Wing - Aileron and Spoiler Pulley with Enhanced Corrosion Resistance - Retrofit - ModSum 4-114089.
Remarks Comments regarding this safety information should be referred to the Safety Information Section, Certification Directorate, EASA;
E-mail: ADs [at] easa.europa [dot] eu

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