EASA SIB CE-10-49R1: Cessna Citation Series — Galley Heated Drain Mast

What to do

Owners, operators, and maintenance personnel should disengage power to the heated drain mast (P/N 105881) when the aircraft is on the ground and not in flight, especially during hangar maintenance or extended ground operations. Until Cessna releases updated maintenance manual procedures, stakeholders may contact Cessna Aircraft Company for guidance on safely removing power from the heaters. No mandatory compliance deadline is specified.

Summary

The Special Airworthiness Information Bulletin SAIB CE-10-49 R1 is an FAA informational bulletin addressing an airworthiness concern with heated drain masts (P/N 105881) installed on various Cessna Citation models including the 510 Mustang, 525 series (CJ, CJ1, CJ2, CJ3, CJ4), 550 series, 560 series, 650 series, and 750 X. The bulletin informs owners, operators, and maintenance personnel about overheating and fire risks associated with these galley heated drain masts. It provides guidance to prevent such issues but does not mandate regulatory action.

What changed

SAIB CE-10-49 R1 revises the original SAIB CE-10-49 by clarifying the recommendation section to better explain the bulletin's intent and updating the contact phone number for related service information. It also highlights the ongoing efforts by Cessna to revise maintenance manuals to include safe ground maintenance procedures for disengaging power to the drain heaters.

Why it matters

This bulletin is important for aviation professionals because it highlights a potential fire hazard from overheated galley drain mast heaters, which could compromise aircraft safety during ground operations. Operators and maintenance teams need to be aware of this issue to prevent equipment damage and ensure safe maintenance practices. Understanding and following the recommendations can improve reliability and reduce the risk of fire incidents related to these components.