EASA SIB SAIB-2026-15 — Forward Pressure Bulkhead

Summary

The Special Airworthiness Information Bulletin SAIB: 2026-15 is an FAA informational bulletin addressing cracking and missing rivets on the forward pressure bulkhead of Ontic Engineering and Manufacturing Inc. SA226 and SA227 series airplanes, commonly known as Merlin, Metro, and Metroliner aircraft. This bulletin informs operators and owners about potential structural issues without mandating corrective action. The affected aircraft were originally certified under Swearingen, Fairchild Aircraft, and M7 Aerospace type certificates.

What Changed

SAIB: 2026-15 introduces awareness of cracking and missing rivets on the forward pressure bulkhead of SA226 and SA227 series airplanes. It highlights that some rivets were not installed during production, contributing to structural cracking, but does not issue a mandatory airworthiness directive. Instead, it recommends inspections and corrective actions based on Ontic service bulletins and letters.

Why It Matters

This bulletin is important for aviation professionals because it identifies a potential structural integrity issue that could affect the safety and airworthiness of SA226 and SA227 aircraft. Operators, maintenance organizations, and compliance teams need to be aware of this condition to prevent further damage and ensure continued safe operation. Early detection and repair can mitigate risks associated with missing rivets and cracking at the forward pressure bulkhead.

What To Do

Operators of SA226 and SA227 series airplanes should inspect their aircraft for cracks and missing rivets on the forward pressure bulkhead. They should follow the guidance and corrective actions outlined in Ontic Service Bulletin 226-53-019, Ontic Service Bulletin 227-53-014, and Ontic Service Letter CC7-SL-067. No specific compliance deadline is stated, but timely inspection and repair are recommended to maintain airworthiness.