CESSNA CITATION JET manuals

This document is a mandatory service letter for the Cessna 560XL series aircraft, specifically addressing fire protection systems related to fire bottle wiring. It outlines necessary inspections and tests to ensure proper wiring connections to the fire extinguisher cartridges, which are critical for safe operation. The service letter is applicable to specific serial numbers of the Citation Excel, XLS, and XLS+ models. Compliance is mandatory within 100 flight hours or 60 days from receipt, emphasizing the importance of correct wiring to prevent circuit breaker disengagement during fire bottle discharge attempts. The document provides detailed instructions for mechanics to follow, ensuring safety and compliance with Textron Aviation standards.

• Mandatory compliance within 100 flight hours or 60 days.
• Inspect fire bottle wiring to prevent incorrect connections.
• Use a multimeter to check for proper voltage levels: +28 VDC during tests and less than +10 VDC before connecting.
• Torque lock nuts to 10-15 inch-pounds; do not exceed 25 inch-pounds to avoid failure.
• Follow all safety precautions to prevent accidental discharge of fire bottles.