This document provides information on performance evaluation methods for airline agents. It discusses 12 different methods: 1) Management by Objectives, 2) Critical Incident Method, 3) Behaviorally Anchored Rating Scales, 4) Behavioral Observation Scales, 5) 360 Degree Performance Appraisal, 6) Checklist and Weighted Checklist Method. For each method, it provides a brief overview and highlights some key aspects, such as how ratings are determined or advantages/disadvantages. The document serves as a reference for airline personnel managers to understand different performance appraisal techniques that can be used to evaluate agent performance.