EASA SIB SAIB-2026-09
Apr 23, 2026Hydraulic Power - Hydraulic Power Transfer Unit System
The FAA Special Airworthiness Information Bulletin SAIB: 2026-09 addresses errors found in Boeing Alert Requirements Bulletin 757-29A0071 RB, Original Issue, dated November 16, 2023, which affects The Boeing Company Model 757-200, -200PF, -200CB, and -300 series airplanes. This bulletin informs operators about issues related to the hydraulic power transfer unit (PTU) control valve and provides recommended actions to mitigate potential safety concerns. The document serves as an interim advisory prior to the anticipated supersedure of Airworthiness Directive 2024-25-09.
- Boeing 757200200PF200CB300