The Senior Cabin Crew Member (SCCM), also referred to as the In-flight Service Manager (ISM), Flight Service Director (FSD), Customer Service Manager (CSM), Cabin Service Director (CSD), or by other titles, is the senior flight attendant in the flight attendant chain of command. The SSCM is responsible to the captain/commander for passenger safety and cabin security, and accountable to the Company for customer service. The designation of "SCCM" is a company appointment and does not necessarily mean that the SCCM is the most senior, in terms of years of service with the company, of the crew members on a flight. Qualifications for SCCM appointment vary by carrier but will virtually always include previous experience as a flight attendant. Further training, both classroom and in-flight, is typical, and a new SCCM will normally conduct their first flight(s) in the role whilst under the supervision of a designated trainer. The SCCM will typically earn a higher salary or hourly wage than other flight attendants due to the added responsibility and managerial aspects of the role.