Port Wing Internal Tank Abrasion — Inspection

Published: Feb 1, 2019
Effective: Feb 7, 2019
Deadline: Feb 7, 2019

AI-generated summary of the official EASA document. Verify against the PDF before acting.

What to do

Operators must perform the removal, modification, inspection, and if necessary, repair of the port wing internal tank following the instructions in Pacific Aerospace Mandatory Service Bulletin PACSB/XL/099 issue 1 or later. All actions must be completed within the next 165 hours time in service from the effective date. Reassembly must follow the specified procedures before further flight.

Summary

Airworthiness Directive DCA/750XL/34 is issued by the Civil Aviation Authority of New Zealand and applies to Pacific Aerospace Limited 750XL aircraft, serial numbers 100 through 213 (excluding 206) and 8001. This directive mandates inspection and potential repair of the port wing internal tank to address abrasion caused by fuel finger filters. The directive aims to prevent fuel leaks due to chafing damage in the wing skin.

What changed

DCA/750XL/34 introduces mandatory removal, modification, inspection, and repair procedures as detailed in Pacific Aerospace Mandatory Service Bulletin PACSB/XL/099 issue 1 or later revisions. It establishes new inspection and repair requirements specifically targeting chafing damage in the port wing internal tank of affected 750XL aircraft. This is a new regulation prompted by a reported unsafe condition.

Why it matters

This directive is critical for operators and maintenance organizations to prevent potential fuel leaks that could compromise flight safety. Compliance ensures the structural integrity of the port wing fuel tank and reduces the risk of in-flight fuel system failures. It also provides clear instructions to maintain airworthiness and regulatory compliance for affected aircraft.

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