EASA AD DCA-750XL-32B
Landing Gear - Nose and Main Landing Gear Attachment Bolts — Inspection
Summary
The Airworthiness Directive DCA/750XL/32B issued by the Civil Aviation Authority of New Zealand mandates inspection and modification of nose and main landing gear attachment bolts on Pacific Aerospace Limited 750XL aircraft, specifically all serial numbers up to and including 216, 220, 8001, and 8002. This directive requires compliance with Pacific Aerospace Mandatory Service Bulletin PACSB/XL/105 issue 4, dated 19 December 2018, to ensure dual retaining devices are installed on the landing gear bolts.
What Changed
DCA/750XL/32B revises previous requirements by mandating the use of the latest Pacific Aerospace Mandatory Service Bulletin PACSB/XL/105 issue 4, which introduces alternate bolts for part numbers NAS6606D63 and NAS6606D68. It updates inspection and replacement procedures for nose landing gear lock nuts and pal nuts and adds specific instructions for short range wing aircraft with different main landing gear bolt sizes.
Why It Matters
This directive addresses safety concerns due to reports of loose nose landing gear attachment lock nuts and pal nuts, which could compromise landing gear integrity. Compliance ensures the secure attachment of landing gear components, reducing the risk of mechanical failure during operation. Operators, maintenance organizations, and compliance teams must adhere to these requirements to maintain airworthiness and regulatory compliance.
What To Do
Operators must inspect the nose landing gear lower bolts and clamps for security at every daily inspection until the lock nuts and pal nuts are replaced with castellated nyloc locking nuts and split pins as per the service bulletin. Replacement and installation of required components must be completed within 165 hours time in service from 20 December 2018. For short range wing aircraft with specific bolt sizes, palnuts must be inspected and installed according to the bulletin instructions.
Your fleet's weekly compliance brief
AI-summarized regulatory changes, compliance deadlines, and action items — filtered to your aircraft, every Monday.
AI-generated summary from official EASA source document. Always verify against the original.